SECT. XXII.—ON DISEASES OF THE EYE; AND FIRST OF PAIN, FROM GALEN.

When violent pains in the eyes take place, consider from what diathesis

the eye happens to be pained in the inflammations; for they are either

occasioned by the pungency of an acrid defluxion, or from the coats being

over filled and stretched, or from the distension of thick humours or of

flatulent spirits. When the pains proceed from pungency, they are to be

cured by evacuating with purgatives, and by injecting into the eye the

white of an egg. When the inflammation is concocted, if the body be free

of impurities, the most befitting remedies are baths. Inflammations from

plethora are to be cured by the detraction of blood, purging the belly,

and applying friction to the inferior extremities. Those from distension

are to be cured by first evacuating the whole body, then by occasioning

a revulsion downwards of the humours, and afterwards by using topical

applications of a discutient nature. The eyes must be fomented, and the

decoction of fenugreek poured into them. When the vessels of the eye are

distended with thick blood, while there is no plethoric diathesis in

the general system, the patient must drink wine which has the power of

heating, evacuating, and removing obstructions.

_On disorder of the eye, and particularly of ophthalmy._ Disorder of

the eye is a wateriness and heat of it, with preternatural redness, not

occasioned by any cause within the body, but by some external one, such

as the sun, smoke, dust, or the wind; wherefore it is soon dispelled when

the cause is removed. And ophthalmy is a marked disorder, which may be

occasioned not only by an external cause, but also without any obvious

one, and remains until the third, fourth, or fifth day. It is best cured

by avoiding every external exciting cause, by spare diet, drinking water,

walking, and by opening the belly.

_On inflammation._ When inflammation remains in the eyes after evacuation

of the general system, we may use ointments for dispelling the rheum,

and soothing the irritation, such as the collyrium of Nilus made from

roses, the chiac, or the collyrium from nard. When the tunica adnata

is inflamed, we may use the collyria called monhemera, injecting them

into the eye with the white of an egg. Next day, if the inflammation

be not aggravated, we may anoint them with the collyrium of nard, and

use a fomentation of the decoction of melilot and fenugreek. When the

humour which occasions the ophthalmy is thick, we may use medicines which

are neither obstruents nor incrassants, but which, on the contrary,

will dissipate, dilute, and evacuate the humours, such as the chiac

collyrium. But, if the humours are impacted in the head, we may fix a

cupping instrument to the hind head, or scarify, or apply leeches to

the forehead, near the eye affected. We must use cataplasms of pure

bread soaked in water, with a little rose-oil, or polenta boiled in the

decoction of poppy-heads also with rose-oil. We may also use a more

efficacious cataplasm from saffron, melilot, the fleshy parts of dates,

the tender leaves of coriander, eggs, and roasted wheat and crumbs of

bread dipped in a decoction with a small quantity of rose oil, in a

decoction of pounded poppy heads. We mix also the seed of the poppy as an

anodyne. If compelled by the severity of the pain, we must add a little

opium; but, unless the pain be very violent, we must abstain from all

narcotics. If the inflammation be moderate, apply aloes by itself, or rub

it in with water or the white of an egg. In order that the remedy may be

ready for use, take of saffron, dr. vj; of aloes, dr. xvj; of gum, dr.

ix; mix with rain water, and make a collyrium. And the saffron collyria,

as they are called, are proper for the commencement of ophthalmies. In

those cases in which there is an œdematous and white swelling about

the eyebrows and tunica adnata, without injury of the coats, the best

applications are those called liquid collyria, prepared from saffron,

copperas, and honey. And this one is excellent:

_A liquid anodyne collyrium._ Of the melanteria used by tanners, of Attic

honey, of the juice of fenugreek, equal parts. Boil to the thickness

of honey, and touch the two angles of the eye with it, by means of the

rounded extremity of a specillum or probe.

_For a copious defluxion._ For a flow of humours, in the commencement

abstinence from food is proper, and the drinking of water, and most

especially abstinence from venery; the belly should be opened, and the

face washed with a watery oxycrate, if the rheum be of a hot nature; but

if otherwise, the forehead and eyebrows may be anointed with copperas

and honey. Some dissolve the copperas in water, and bathe with it. In

defluxions without inflammation, or with inflammation, but so that

the affection is seated above the skull, we must use agglutinative

applications to the forehead, either simple ones, such as green vine

leaves, or the juice of the bramble, or of purslain, or of quinces with

some fine polenta, or with gall levigated in wine, or with fine polenta

or hemlock, or flea-wort with water, or nightshade, or snails with their

shells pulverized, and applied from temple to temple, and, in a word,

with things of an astringent and cooling nature, or with the following

compound applications: Wheat flour, and myrrh or frankincense, with the

white of an egg, may be rubbed in; or Samian earth, with myrrh and manna,

in like manner, with the white of an egg; but in colder defluxions, of

native sulphur, of bitumen, of pitch, of colophonian rosin, of each,

dr. ij; also the trochisk of Musa, that called aster, and the like, are

suitable repellents. And the theriac, dissolved in an astringent wine,

and rubbed on the forehead, stops cold defluxions, and may be drunk with

great advantage. Over the eye apply wool, or a small rag wet in the

white of an egg; and new-made cheese, in like manner, when applied to

the eye, restrains acrid defluxions in particular; also the astringent

collyria, as they are called, when rubbed in or injected into the eye

in a watery state, do the same thing. But if the humour be deep-seated,

and below the skull, and if fixed there for a length of time, after the

general evacuations use errhines and masticatories, shaving the head, and

applying rubefacients to it. But to these must be joined the surgical

operations for the head, namely, Angiology, Arteriotomy, Hypospathismus,

and Periscyphismus, with burning at the vertex down to the bone. But

cupping instruments, with scarifications applied to the hind-head, will

produce a revulsion of the defluxion. The symptoms of defluxions external

to the skull are distension of the vessels of the forehead and temples,

forming, as it were, a band to the head, and the complaint being remedied

by agglutinative applications of a desiccant nature. When these symptoms

are not present, and the defluxion proves of long duration, and sometimes

is exasperated by sternutatories, the humour is to be supposed seated

below the skull.

_On chemosis._ The disease is called chemosis when both the eyelids are

everted in consequence of a violent inflammation, so that the eyes are

scarcely covered by them, and the white of the eye is elevated above the

black, is red, and occupies a large portion of the black. We must cure it

by phlebotomy, purging, the white collyrium of roses, and the spodiac,

with milk, or the white of an egg, and we may anoint the eyelids,

temples, and forehead with the same, and have recourse to paregoric

fomentations and cataplasms. When the inflammation begins to remit, we

may rub in the more acrid applications, such as the green one from roses.

_On hyposphagma and emphysema._ Hyposphagma is a rupture of the veins

of the tunica adnata, occasioned most frequently by a blow. Bathe the

eyes with the blood of the wood-pigeon, or of the common pigeon, or the

warm milk of a woman in which a little frankincense has been triturated,

and inject brine, more particularly that from Cappadocian salts, and

use a fomentation from the decoction of hyssop. Swellings about the

eyes from blows are remedied by repeated fomentations with oxycrate, or

a sponge out of oxycrate may be applied to them, or a liniment may be

used, consisting of equal parts of burnt lapis specularis, and pigeon’s

dung, triturated with wine or vinegar. Or a cataplasm may be applied of

new cheese, or of the rind of radishes, or of dried grapes without the

stones. Each of these is to be mixed with oxycrate or honied water. The

same remedies apply also to emphysema.

_On prurient emphysema and psorophthalmia._ Emphysema is an œdematous

swelling of the eyelids; but psorophthalmia is a scabious eruption of

the eyelids attended with pruritus, arising from a saltish and nitrous

humour. They are remedied by oxycrate, the decoction of lentils, and a

fomentation of roses. The following is a liquid collyrium: Of copper,

dr. vj; of calcined misy, and myrrh, of each, dr. iij; of saffron, dr.

iss; of pepper, dr. j; of Chian wine, and Cretan sweet wine, of each

1½ cyathus; boil to the thickness of honey. This is the collyrium of

Erasistratus called panchrestos, which applies to cynanche, ulcers in the

mouth, and on the privy parts, and to the earache. They are to be rubbed

with oil into the patient’s eyebrows when he is going to sleep. Acid,

saltish, and acrid things are to be abstained from.

_On sclerophthalmia and xerophthalmia._ Sclerophthalmia is a hardness of

the eye with difficulty of motion, pain, and redness, without wateriness.

For this the eyes are to be fomented frequently with sponges out of hot

water; and at bedtime the white of an egg with rose-oil, or the fat of

geese, may be applied to the eyelids. Let them avoid everything of a

cooling and hardening nature; let the head be covered and anointed, and

the belly kept open. Xerophthalmia is a pruriginous affection of the eyes

without rheum. It is to be cured by baths, unguents, and a wholesome

diet. Applications of an acrid nature are suitable to both, as they

promote a flow of tears, by which the hardness will be softened, and the

dryness rendered more humid. Such are the panchrestos of Erasistratus,

and those called dicenteton and stratioticum.

_On ectropion, or eversion of the eyelids._ This complaint is an eversion

of the eyelid, occasioned either by a scar or fungous flesh. When it

is occasioned by fungous flesh, and is of long duration, roast scraped

verdigris, pulverise it and apply, or use burned lead washed with sulphur

vivum, or apply both in equal parts, namely, the verdigris and the lead.

Ectropion from a cicatrix, if at all remediable, must be cured by a

surgical operation.

_On ægilops and anchilops._ Ægilops is an aposteme between the great

canthus of the eye and the nose, which breaking and being neglected, ends

in a fistula that extends to the bone. Before the aposteme breaks out

into an ulcer, it is called anchilops. A very good application is horned

poppy and saffron, applied with the juice of perdicias (_pellitory of

the wall?_) They must be frequently changed, and till then it will not

turn to pus.—_Another_: Alica, boiled in vinegar and properly triturated,

not only cures the disease at the commencement, but, after suppuration,

it bursts the abscess and penetrates to the bone. By using it, you may

cure not only ægilops but anchilops.—_Another_: Garden rue, levigated and

boiled with protostactos and applied, answers excellently for ægilops,

penetrates to the bone, proving stimulating at first, but afterwards not

so; and, what is wonderful, it does not leave an ugly scar.—_Another_:

Pulverize snails with their shells and apply them; and sometimes aloes or

myrrh may be added before the ægilops is converted to pus; and after the

abscess bursts it dries up the pus.

_On trachoma._ Trachoma is a roughness of the inner surface of the

eyelid, an intense degree of which has the appearance of clefts, and

is called sycosis. When it becomes chronic and callous, it is called

tylosis. We must use collyria for it, namely, the one from wine, and

that prepared from the two stones; or the eyelid may be rubbed with the

bloodstone itself (hæmatites,) much washed in water. But the collyrium

called harmation, with a little of the cycnarius, or the saffron

collyrium, answer well with these, and with cases of psorophthalmia

without ulceration, when rubbed upon the everted eyelid. But if the

callus be hard and do not yield to these things, we must turn the eyelid

out and rub it down with pumice-stone, or the shell of the cuttle-fish,

or fig-leaves, or by the surgical instrument called blepharoxyston.

_On chalazion._ Chalazion is a concretion of an indolent humour in the

eyelid, for which pound ammoniac with vinegar, and anoint along with

galbanum. It likewise has a good effect when joined with cerate and

turpentine.

_On hordeolum, or stye._ Hordeolum is a small oblong aposteme on the

tarsus of the eyelid. We may foment it with white wax; or throwing away

the head of a fly, we may rub the part with the rest of its body; or wash

with the decoction of barley.

_For lice in the eyebrows._ Having first cleared away the pediculi, wash

the part with tepid sea-water, and use the under-mentioned application

to the tarsus: Of fissile alum, two parts; of stavesacre, one part;

triturate, and use.

_On madarosis, or milphosis._ This affection is a falling off of the

hairs of the eyelids. Wherefore, after attending to the general health,

use the detergent ointments called calliblephara. Of Cannel-coal, of

Celtic saffron, of ladanum, equal parts; pulverize, and use.—_Another_:

Of antimony, calcined and cleaned, dr. j; of lead, burned and cleaned,

dr. iv; of saffron, dr. iv; of Indian nard, dr. iij; pulverize, and

use.—_Another_: Of the burnt bones of dates, dr. iij; of Celtic nard, dr.

ij; pulverize, and use. This also cures scabious eyes.

_That of Neopolites for milphosis and chronic affections of the eyelids._

Of antimony, of cadmia, of chalcitis, of foreign misy, of each, equal

parts; beat together coarsely, mix with honey; when roasted, triturate,

and use.

_On ptillosis._ Ptillosis is a callous thickening of the eyelids, of

a red colour, and often accompanied with a falling out of the hair.

In addition to those already mentioned, the following is an excellent

application: Rub with mice dung burnt, and triturated in honey.

_For a falling off of the hairs of the eyebrows._ Anointing the

fingers with oil, or geese fat, rub them upon lead, and anoint with

this.—_Another_, which also darkens the hairs: Triturate blunt Pontic

walnuts with the fat of goats or of bears.—_Another_, which also applies

to alopecia of the chin: Of henbane, dr. ij; of mice dung, dr. j; of

maiden-hair, dr. j; of the ointment of iris, four spoonfuls. Pound well

together, mix the ointment, and, having first fomented, anoint. If you

previously shave the part, it will be the more efficacious.

_For trichiasis of the eyelids._ Having first torn out the hairs which

irritate the eye, anoint the part immediately with the blood of a frog by

itself, or with the ashes of white chameleon, or the blood of bugs; or

the juice of the fumitory, which grows among barley, mixing it with gum,

or the ashes of pickled limpets with cedar rosin (_gum vernix?_), or the

ashes of the lotos; or liquid alum, called _phorimum_; or the blood of a

tick taken from a dog. It is very efficacious.

_Agglutinative medicines._ The following substances agglutinate the

hairs when bent inwards: Bitumen, mastich, colophonian rosin, glue, the

glutinous part of snails.

_On encanthis and rhyas._ Encanthis is an excrescence of the natural

flesh at the great canthus, but rhyas is a wasting of it. You may treat

encanthis with the remedies mentioned for ectropion, and similar caustic,

or septic applications; but the whole substance must not be consumed,

lest rhyas be produced, for it must only be reduced to its natural size.

Rhyas, when the whole flesh is consumed, either by an awkward surgical

operation or medicines, is incurable. But if part of it only be lost, you

may restore it by moderately astringent and incarnating applications,

such as that from saffron, horned poppy, and aloes; and the saffron

collyria, and henbane boiled in wine and applied, and a small quantity of

alum with wine.

_On ulcers._ Of the ulcers in the eyes there is but one genus, but many

particular species. For that in the cornea, when hollow, narrow, and

clean, is called bothrion. That which is broader than the bothrion, but

less deep, is called cœloma. Argemon is the name given to that which

arises on the circle of the iris, but affects the surrounding parts, so

that the part which is on the external side of the iris is red, but that

on the internal white. Epicauma is a foul and impure ulcer with eschars,

which, when cleaned away, often give vent to the humours of the eye.

There are many other varieties of ulcers, all of which we shall treat

of in general terms. If, therefore, the ulcer happen to be attended

with inflammation, the cure must be accomplished by such things as are

calculated to soothe and digest the inflammation, regard being had to the

peculiar nature of the ulcer. Such are the collyria, called _libanium_,

_cycnos_, and _palaria_, _aster_, and the like; and those from starch,

Samian earth, and ceruse. But the most sedative collyrium which we are

acquainted with is that of Nilamon; and yet we must not persevere long

with it, because it is very narcotic. The best of all applications is

the collyrium from decoctions not possessed of a narcotic quality. But

if the ulcer be attended with a rheum, we must mix some of the collyria

for it, such as that from the _hydra_, the _chiac_, the yellow _cycnos_,

and such as possess repellent properties without being stimulant. When

the ulcers are foul, we must use honied water moderately diluted, and

the decoction of fenugreek, by themselves, and along with the collyria

for that purpose; when they are acrid, we may use that of Severianus

with the diachylon from fenugreek; when not acrid, those from myrrh and

nard. When the ulcers are cleaned, they may be cicatrized by means of the

collyrium called _cleon_, in addition to which it will render the scar of

the same colour.

_On procidentia._ Procidentia is a projection of the coat called uva

(_iris?_), formed by an ulceration or rupture of the cornea. When,

therefore, it is small, so as to resemble the head of a fly, it is called

myocephalon. When it increases more, so as to resemble a grape-stone, it

is called staphyloma; when it advances far forward, so as to protrude

between the eyelids, it is called melon; and if it has become callous,

it is called clavus. If, therefore, the projection is small, like the

head of a fly, we must use repellent and astringent applications, such

as the chian, that called _fuscum_, the _nard_, and the _theodotian_,

and those from olive leaves, and from horn. And we must bind upon them

without pressure a piece of sponge which has been soaked in oxycrate,

or astringent wine, or the decoction of roses, or the compress called

splenium may be used. The best application for procidentia, and all

ulcers of the eye, is the collyrium called _olympiac_ or _olympus_, with

the juice of olive, or of knot-grass, or of poley. The same things are

applicable to clavus and staphyloma, before they whiten; for after they

become white and callous, they are incurable.

_On hypopyon._ Hypopyon occurs occasionally in the cornea, being

sometimes deeply seated, and sometimes more superficially, the matter

assuming the shape of a nail, and hence the affection has got the name

of onyx. The indication of cure is either to dispel the pus by remedies

possessing this property in a moderate degree, such as honied-water, and

the juice of fenugreek, and the collyria formed from it, the libyanum,

and those from frankincense; or to make it burst, and cleanse the ulcer

by means of the more potent remedies, such as those called _diasmyrna_

and the _hygidian_. For cases of hypopyon without ulceration one may use

the following liquid collyrium: Of copperas, and of saffron, of each,

dr. viij; of myrrh, dr. iv; of honey, lb. j. The phlyctæna, which is an

elevation of the cornea, by a certain humour corroding its fibres, yields

to the same treatment as hypopyon.

_The liquid collyria of Bassus for hypopyon._ Of saffron, of aloes, and

of myrrh, of each, oz. j; of wine, oz. iij; of the finest honey, oz.

vj. The saffron is to be levigated with a small quantity of the wine,

then with the aloes and myrrh; and when it thickens, add the honey, and

having mixed together, lay up in a glass vessel, and use twice a day, or,

if the case be urgent, three times. It at the same time cleanses the eye

and proves incarnating and cicatrizing.

_On cicatrices and leucomata._ Superficial scars on the eye are called

by some cicatrices, and by others nebulæ; but the more deeply seated are

called leucomata. The proper remedies for them are those of a detergent

and cleansing nature. Wherefore, nebulæ may be cleansed by the juice of

anemone, and that of the small centaury, with honey; but the more chronic

are reduced by cedar gum, or by copper alone levigated with water for a

collyrium, and by the cleansing collyria, such as that from hartshorn,

and those called _rhinarian_, _hecatombe_, and the like. Leucomata may be

cleared away by nitre carefully levigated with some old oil, and properly

smeared upon them, and by the shell of the cuttle-fish (_sepia_) burnt

and pounded finely with honey. Among the collyria, the following one

proves an excellent and mild detergent: Of mamira, of ammoniac perfume,

of Troglodytic myrrh, of crocodile’s dung, equal parts; make a collyrium,

and use. Levigate the dung of the land crocodile with water, and

anoint, having formed it into a collyrium. You may also succeed well by

dissolving Cappadocian salts in water, and then dissolving the collyria

for leucoma in it, and injecting it.

_Dyes for cicatrices._ Of galls and acacia, of each dr. iv; of copperas,

dr. ij; use. The following is a collyrium: Of the flowers of the

pomegranate, of copperas, of acacia, of gum, of each dr. iv; of antimony

and galls, of each dr. ij; triturate with water. When the flowers of the

pomegranate are not at hand, you may use the internal membrane between

the seeds.

_On pterygium._ Pterygium is a nervous (membranous?) excrescence of the

tunica adnata, arising at the angle of the eye, and advancing to the

corona. When it increases greatly, it covers the pupil itself. Wherefore,

large and chronic pterygia can only be extirpated by a surgical

operation. But the smaller and more recent ones may be worn down by the

abstergent applications, such as those used for trachoma and leucoma.

Among the simple remedies are burnt copper, and copperas with the gall

of swine, which answer well. The following is a more potent remedy: Of

copperas, p. i, of gum, p. ss.; triturate with wine, and anoint, or form

into collyria. Some mix the gall of a goat with honey, and anoint with it.

_For pterygium, hypopyon, and dimness of vision._ (From Oribasius.) Of

the magnet-stone, of scraped verdigris (xyston), of reddle, of ammoniac

perfume, of each dr. iv; of saffron, dr. ij; of Attic honey half a

spoonful. It also answers for leucoma.

_For carbuncle and carcinoma._ Carcinoma is an affection of the cornea,

attended with pain, distension, redness of the tunics, and pungent agony,

extending to the temples, more particularly if shaken. They loathe

their food, and have the pain increased by acrid things. The affection

is incurable, but may be alleviated by a milk-diet, farinaceous and

otherwise wholesome food, devoid of all acrimony; and the injection of

soothing collyria, such as the Spodiac, Severianum, and the like. We must

previously attend that the general system be in a proper temperament.

Carbuncle also is a malignant ulcer of the sloughy kind, forming

sometimes in the ball of the eye, sometimes in the eyelid, as in the

other parts of the body. In cases of carbuncle of the ball of the eye,

we must first evacuate with a clyster, and then purge moderately with

boiled milk, afterwards foment with a sponge, and apply a cataplasm of

the flour of tares, or of wheat boiled in honied water, or sometimes we

may add pounded iris, and wash the eye with milk. If the ulcer spread,

we may apply a cataplasm of lentils with honey or boiled quinces: if

it continue spreading, we may use the boiled leaves of the olive, the

rind of the pomegranate boiled in wine and pounded with honey. When the

ulceration stops, and the eschar falls off by the application of the

medicine about to be described, and the ulcers have become clean, we may

apply a cataplasm of the roasted yelks of eggs, triturated with saffron

and honey, until the ulcer is healed. The medicine is this: Of spodium,

dr. iv; of myrrh not much toasted, dr. iij, and oboli iij; triturate in

Aminæan wine until it become dry, mix old Cretan sweet wine, and having

triturated, lay up the liquid in an earthen vessel, and anoint with it.

For carbuncles of the eyelids, having cut an acid pomegranate, boil it

whole in vinegar, and, when softened, pound and put it into a linen

cloth, and use. Change twice or thrice during the day, and once during

the night.

_On mydriasis._ When the pupil does not appear changed in colour, but

much wider than natural, and when it sometimes wholly impairs the

vision, and sometimes nearly so, and when every object appears smaller,

the affection is called mydriasis. The cause of it is some redundant

humour. We must cure it by bleeding from the arm, or purging; but, if

not, by dividing the veins in the angles of the eye, and then applying a

cupping instrument to the back part of the head, and bathing the face and

eyes with sea-water, or, if it be not at hand, with brine or oxycrate. We

must also use the remedies which are applicable to phyletænæ or blisters.

_On phthisis and atrophy._ Phthisis is an affection of the pupil,

which is contracted, and appears duller and more rugose than usual,

but objects seem larger than natural. The cause of it is condensation,

mostly occasioned by dryness. Phthisis differs from atrophy in this, that

phthisis renders the pupil contracted, whereas in atrophy the whole eye

is smaller and more depressed. We may cure them by exercise, and rubbing

carefully the head, the face, and the eyes; by bathing the face with

water, and anointing the head with some healing ointment; and smearing

the eyes with an attenuant and acrid composition, such as the following:

Of ammoniac, dr. j; of crocomagma, dr. iv; of saffron, dr. ij; of

verdigris, dr. j. Triturate in water, form and use.

_For nyctalopia._ In the disease called nyctalopia, the patient sees

during the day, but at sunset his vision becomes dimmer, and when night

comes on he does not see at all. We must effect the cure by bleeding

from the arm and the angle of the eye, then purging or evacuating by a

clyster, and afterwards ordering masticatories or sternutatories. Before

food, we give hyssop to drink, or rue; but, if the disease do not yield,

we must again administer the purgative medicine formed from scammony,

and castor, anoint with clarified honey, and make the patient shut his

eyelids, so as to retain the liquid application. Or of burnt alum, p. ij;

of fossile salt, p. j; triturate with honey and anoint.—_Another_: Having

roasted the liver of a goat, collect the ichor during the roasting and

anoint, but give the liver itself to eat; or boil, and direct the vapours

to be received with open eyes.

_For glaucoma and suffusion._ (From Ruffus.) The ancients considered

glaucoma and suffusion as the same disease; but by their successors

glaucoma has been accounted an affection of the crystalline humour,

which is changed by a watery substance to a cerulean colour; but

suffusion is reckoned a defluxion of humours concreted between the cornea

and the crystalline lens. Glaucoma is in every case incurable. Suffusion

may indeed be cured, but not always. We may try to cure suffusion before

the disease is completely formed, by taking blood from the arm, by

purging and acrid clysters, such as those made from the decoction of

centaury, or of the bitter cucumber, and by keeping the bowels for some

time in a loose state. Cupping instruments with scarifications may be

applied to the hind-head; the patient must drink water during the whole

regimen, take attenuant food, and, in process of time, masticatories may

be used for a few days with advantage. When the vision is depraved, as,

for example, gnats appearing before the eyes, which case proceeds from a

cacochymy or from bilious vapours ascending to the head, we may give for

a time the bitter medicine from aloes, or purge with it. To the eyes we

must make applications at first simple, such as honey and oil, with the

juice of fennel, and afterwards compound, such as this: Of sagapene, dr.

ij; of Cyrenaic juice, of white hellebore, of each, dr. vj; triturate

with eight heminæ of honey. We, says Oribasius, use the following

medicine: Of the juice of wild carrots, of germander, of cresses, of

each, equal parts; triturate. The following collyria are beneficial,

namely, that from the juice of the fennel, that called _proteus_, the

_thalasseros_ and that from opobalsam. The collyria prepared from them

are useful, and the decoction of fennel in the commencement answers well

as a fomentation, and that from juices, opobalsam, honey, old oil, and

the like.

_On amaurosis and dimness of sight._ Amaurosis is, for the most part, a

complete impediment of the sight without any apparent affection about the

eye; and dimness of sight is an imperfection of vision arising without

any sensible cause. The same mode of cure as that described for suffusion

applies generally in this case; but, in particular, blood may be

abstracted from the corners of the eye, leeches applied to the temples,

and friction of the extremities. In process of time we must have recourse

to sternutatories, emetics with an empty stomach, and the application of

ointments, at first with equal parts of honey and oil, and afterwards

with the under-mentioned composition: Of saffron, two oboli; of the gall

of the hyæna, dr. j; of common pepper, eighty-five grains; of fennel

juice, dr. xvj; of ammoniac perfume, dr. j. Triturate the dry substances

with the juice, add four spoonfuls of honey, prepare and lay up in a

copper vessel for use. Before using, let him foment the eyes by immersing

them in hot sea-water.

_On strabismus, or squinting._ Congenital squinting is cured by the

application of a mask, so that the children are compelled to look

straight forwards; for strabismus is a spasmodic affection of the muscles

which move the ball of the eye. And the lamp should be placed fairly

opposite, and not so as to shine obliquely. When the eye is turned to

the nose, purple flocks of wool should be fastened to the outer angle of

the eye, so that by looking steadily at them, the persons affected may

correct the state of the eyes.

_On ecpiesmus._ The eyes are sometimes forced out, so as to remain

prominent. When this happens from strangulation, we must let blood

from the arm; but if otherwise, we must purge with black hellebore or

scammony. When the eyes become prominent from the pain of labour, the

complaint is often removed by the cleansing after parturition; hence we

ought to promote it; and, in men, after phlebotomy, if it do not abate,

we may affix a cupping instrument to the back part of the head, and apply

wool smeared with honey, or flocks of it with water, and bind a compress

gently above it. Cold salt water poured upon the face is likewise

suitable to them, and also the juice of endive and knot-grass, rubbed in

with the juice of poppy, and whatever else can repress and contract.

_On synchysis, or confusion._ Confusion of the sight occasioned by a blow

may be cured by bleeding from the arm, and by filling the whole eye with

the blood of a newly-slaughtered animal, of a turtle in particular, but,

if not, of a pigeon, and then applying soft wool which has been immersed

in an egg beaten up with wine and rose-oil, and binding it on the place.

The same thing is to be done next day; and on the third, it is to be

fomented, washed with milk, and suitable cataplasms applied; after which

it is to be anointed with the remedies for old affections, such as Chiac.

_For myopia._ Those persons are called myopes, or near-sighted, who, from

their births, see near objects, but not those at a distance. Such a state

is wholly incurable, being occasioned by a weakness of the optic spirit.

Old men are affected in the opposite manner to these, for they do not

perceive near objects, but see those at a distance.

* * * * *

COMMENTARY. See Hippocrates (Aphoris., de Visu, et alibi); Galen (de Loc.

Aff. iv, de Med. Sec. Loc. iv); Aëtius (vii); Alexander (ii); Oribasius

(Synops. viii); Actuarius (Meth. Med. iv, 11); Leo (iii); Psellus (Opus

Medicum); Palladius (Comment. in Hippocrat. Epidem.); Scribonius Largus;

Octavius Horatianus (i, 10); Nonnus (Epit. 45); Serapion (ii); Avicenna

(iii, 3, 1, 2); Mesue (de Ægrit. Ocul.); Avenzoar (i, 7); Haly Abbas

(Theor. ix, 13, Pract. v, 34); Alsaharavius (Pract. iv); Rhases (Divis.,

ad Mansor. ix, and Contin. ii); Canamusali (de Oculis, vi); Jesu Haly

(Tract. de Oculis.)

_On pain, disorder of the eye, ophthalmy, inflammation, and defluxion._

The ancients treat of these complaints separately; but, as they are so

nearly connected, we shall class them together. By disorder of the eye

(_taraxis_), they meant an inferior degree of ophthalmy, as is remarked

by Turnebus. (Bernard’s Nonnus, 45.) It is, therefore, the mild acute

ophthalmy of Scarpa. The remedies enumerated by Hippocrates for pains of

the eyes are thus given in the language of Celsus: “Sanguinis detractio,

medicamentum, balneum, vinum.” Drinking wine might appear to us at first

sight not a very likely mode of curing ophthalmies; and yet Galen, in

his Commentary on this Aphorism (vi, 31), has related a case in which

it effected a cure after every other remedy had failed. Even Scarpa

allows the correctness of the aphorism as a rule of practice, and states

that wine and the cold bath are proper when the disease is kept up by

excessive irritability. Alexander recommends wine and the tepid bath

when the inflammation arises from thick and pituitous blood. Philagrius,

as quoted by Theophilus in his ‘Scholia on Hippocrates,’ indicates

that the wine should be white, sweet, new, and if the patient’s head

be delicate, diluted with water. (See further, t. ii, 501, ed. Dietz.)

Mesue makes many interesting remarks upon the above-mentioned remedies of

Hippocrates. For further explanation of the rationale of this practice,

see Schelhammer (de Tumoribus), and Littré (Hippocrat. t. iv, 418.)

Another of Hippocrates’ aphorisms is, that a spontaneous diarrhœa is

a favorable occurrence in ophthalmy; upon which Galen remarks, that,

in imitation of nature’s method of removing the complaint, physicians

are in the practice of producing an artificial looseness by means of

cathartics and clysters. Lead is an ingredient in several of Alexander’s

collyria. For periodical ophthalmy, Hippocrates recommends purging the

head and bowels; and in certain cases bleeding, cupping, and restricted

diet. Celsus, Galen, and, in short, most of the ancient authorities make

mention of narcotics, such as opium and mandragora, but do not approve

of them as common remedies. Galen, however, instances ophthalmy as one

of the species of inflammation in which opium is admissible. (De Optima

Secta, 9.) Alexander, in like manner, cautions against the indiscriminate

use of opium to lull the pain. Some of his prescriptions for collyria,

however, contain opium. Galen recommends scarifications in chronic

defluxions of the eye. Aëtius lays down very proper rules respecting

purging, fomentations, venesection, and baths. He properly remarks

regarding the use of wine, that it is only applicable when the patient

is of a dry and cold intemperament. Celsus is a decided advocate for

fomentations with hot water in all cases of ophthalmy.

The Arabians treat ophthalmy upon the same principles as the Greeks,

without supplying much additional information. Mesue, like our author,

recommends bleeding by opening the temporal artery, which operation he

describes minutely. When the bleeding cannot be stopped otherwise, he

directs us to secure the vessel with a silk thread. He also makes mention

of leeching and the actual cautery. He is very minute in his directions

about his collyria. One of his anodyne collyria consists of the juice of

hyoscyamus, mandragora, and opium; and another contains camphor, saffron,

hyoscyamus, and the like. The use of narcotics, however, is forbid by

Jesu Haly. Rhases also rather disapproves of them. Avicenna makes mention

of bleeding by the temporal arteries, the angular vein of the nose, and

the frontal. When the usual remedies do not succeed, he approves of the

cautery; and, in certain cases, recommends strongly the use of stimulant

applications, such as æs ustum, copperas, and arsenic. Galen, in like

manner, makes mention of arsenic, and also of misy, sori, and chalcitis

(substances resembling our sulphate of copper) among his remedies for

diseases of the eye. Having ourselves had occasion to use arsenic in

certain malignant diseases of the eyelids, and not having found that it

produced any serious disorder in the ball of the eye, we would call the

attention of modern oculists to this medicine as one from which, when

properly managed, the best results may be expected. When the ophthalmy is

of a cold nature, Avicenna approves of treating it by an attenuant diet,

the bath, and white wine. In certain cases he directs us to pour cold

water on the head. Haly Abbas describes three varieties of ophthalmy. The

first arises from manifest causes, such as the sun, dust, and the like;

and is to be cured by bleeding, purging, and cooling lotions, containing

rose-oil, camphor, &c. In the second, the symptoms are more severe,

being attended with greater redness and pain. It also is to be cured by

bleeding, cupping, and emollient collyria. The third variety is chemosis.

Alsaharavius treats of the disease at great length. When it is connected

with a bilious cause, he directs us to purge, use the bath, apply vapours

to the eye, and soothing collyria. Serapion, like Haly, describes three

varieties of the disease by the names of _tarkinisis_, _noutelinie_,

and _kermufil_. Jesu Haly recommends general bleeding, purging, and

fomentations, with the decoctions of fenugreek and fennel, for ophthalmy.

It remains to be mentioned that Galen, Alexander Aphrodisiensis, and all

the Arabian authorities have placed ophthalmy in the list of contagious

diseases. See, in particular, Alex. Aph. (Prob. i, 35), and our brief

sketch of the history of ancient opinions on contagion in the Second

Book, Sect. XXXVI. The celebrated Fracastorius confidently maintains that

ophthalmy is contagious. (De Morb. Contag.) And we may further mention

that all the authorities of the middle ages speak of ophthalmy as being

contagious.

_On chemosis._ By chemosis, modern oculists (as, for example, Scarpa)

understand that state of ophthalmy when blood, owing to a rupture of one

or more vessels, is effused into the cellular membrane which connects

the conjunctiva to the anterior hemisphere of the eye. Our author’s

account is mostly taken from Oribasius, who, in his turn, borrows from

Demosthenes. Galen and Octavius Horatianus, without saying anything of

the general treatment, merely recommend us to apply upon a clean linen

cloth flies pounded with the yelk of an egg. Chemosis is Haly’s third

variety of ophthalmy, for which he recommends copious and repeated

bleeding, cupping, gentle laxatives, cataplasms containing poppies when

the pain is violent, and other soothing collyria. Alsaharavius, in like

manner, recommends depletion and emollient fomentations. Serapion, among

other things, mentions soothing fomentations. In chemosis, according

to Rhases, all the symptoms of ophthalmy are particularly strong and

violent; the eyelids being swelled and everted, and the white of the eye

appearing black. He recommends local and general bleeding, purging, and

astringent applications.

_On hyposphagma and emphysema._ Hyposphagma is not described by any

particular name in modern surgical works. Besides the local applications

mentioned by our author, Aëtius properly recommends general treatment,

we mean bleeding, purging, and the like. Avicenna also makes mention

of venesection and arteriotomy. Haly describes the disease by the name

of _tumor oculi_ as his first variety of _inflatio_. Alsaharavius uses

the same term. Serapion treats of it by the name of _sanguis divisus in

oculo_, recommending treatment similar to our author’s. See also Celsus

(vi, 6.)

The emphysema appears to have been a sort of œdema seated below the

eyelid. Aëtius remarks that it occurs principally in old men. We have

often seen it in them. He recommends fomentations by means of a sponge,

rubbing the eyelid within with honey, pouring hot water on the head,

using baths, drinking wine, and even bleeding at the arm. This last

measure is omitted by our author, and must be unnecessary in general. It

is described by Haly Abbas as his second variety of _inflatio oculi_. He

says it is an œdematous swelling principally affecting old men in summer.

He recommends collyria of a sharp penetrating nature, and various other

applications.

_On psorophthalmia, sclerophthalmia, and xerophthalmia._ For these

affections Aëtius gives various prescriptions containing calamine, burnt

copper, chalcitis, and the like. Similar ones may be found in Galen (sec.

loc.) Galen, like our author, recommends fomentations, by means of a

sponge, with hot water or the decoction of poppies. One of Alexander’s

prescriptions for psorophthalmia contains arsenic. Celsus describes the

symptoms and treatment of xerophthalmia very minutely: “Neque tument,

neque fluunt oculi, sed rubent tantum, et cum dolore quodam graves

sunt, et noctu præ gravi pituita inhærescunt.” He gives the sum of

his treatment in this short sentence: “In hoc vitio multum ambulare,

multum exerceri, lavari sæpe, ibique desudare, multâque frictione uti

necessarium est.” He also prescribes gargles, food of a middle quality,

and various compound collyria, such as the rhinion which contained burnt

copper, myrrh, Phrygian stone, &c. This affection, the dry ophthalmy,

had been described by Hippocrates (Aph. iii, 12, 14.) Most probably, as

Sichel suggests, it was the same as the catarrhal ophthalmy. See Littré

(Hippocrat. t. iv, 418.) Celsus recommends this collyrium also for

the psorophthalmia, which he describes by the name of _scabri oculi_.

For this last-mentioned affection he recommends various stimulant

applications; and, when other remedies are not at hand, directs us to

apply bread pounded in wine. The psorophthalmia is the _prurigo oculi_ of

Haly Abbas, for which, among other things, he recommends a composition

containing pepper, sal ammoniac, saffron, spikenard, camphor, &c. He

describes sclerophthalmia by the name of _durities oculi_, and recommends

for it bleeding, gentle purgatives, emollient collyria, &c.

_On ectropion._ Aëtius, in like manner, recommends compositions

containing ærugo æris, misy, and chalcitis. None of the subsequent

authorities supply any additional information. Alsaharavius in particular

gives a very accurate account of the disease, which, when it arises from

a fungous excrescence growing from the inner side of the eyelid, he

directs us to burn with caustics; but, when it arises from a cicatrix, it

is to be cured only by a surgical operation. This will be found described

in the Sixth Book. In place of the caustics recommended by the ancients,

Scarpa directs the argentum nitratum to be applied.

_On ægilops and anchilops._ These are different stages of the disease

now known by the name of fistula lachrymalis. Galen states that at the

commencement it is to be cured by applications which are repellent

without being too stimulant. He gives a full account of the treatment

recommended by Archigenes. The first application mentioned by him is

a cataplasm consisting of tares and honey. Scarpa, by the way, speaks

favorably of the practice of Ægineta, Aëtius, and Avicenna. Avicenna

treats of the disease with great judgment. His first applications

appear to have been intended to produce resolution; and, if these fail,

suppuratives are to be applied. When the abscess bursts, the sore is to

be reduced to a healthy state by escharotic powders containing alum,

limatura æris, sal ammoniac, and the like. When these fail, a surgical

operation must be had recourse to. This is described in the Sixth Book.

Mesue also has treated of the disease at great length. Haly Abbas

describes the disease very correctly. He says, “Aliquando autem ejus

sanies ad nares defluit per foramen quod inter oculum est et nasum.” This

passage puts it beyond a doubt that the ancients were acquainted with

the lachrymal duct. The disease, he says, sometimes occasions caries of

the cartilages (_os unguis?_). When it is recent, he recommends bleeding

and laxatives; and when it gets into a fistulous state, he directs us to

use applications containing arsenic, sal ammoniac, cantharides, alum,

&c. Alsaharavius mentions that the abscess of the lachrymal sack may

either burst outwards or into the nose. It would appear, therefore, that

he also was acquainted with the natural structure of these parts. One of

the applications recommended by Rhases for fistula lachrymalis contains

arsenic, quicklime, and vitriol. Another is prepared from litharge,

arsenic, and oil. These applications are mentioned by the earlier of the

modern authorities on medicine. See Theodoricus (iii, 2.)

The protostactos mentioned by our author was a composition consisting of

potass and lime. (See Book Seventh, _in voce_, κονία.)

_On trachoma._ This affection does not appear to be noticed in our

late treatises on diseases of the eye, and yet in our own practice

we have met with some cases of it. Rowley mentions it as an asperity

of the internal superficies of the eyelid. Celsus describes it by

the name of _aspritudo_. In severe cases, he says, some scarify the

inside of the eyelid with a fig leaf, a rough probe, or a scalpel. But

in ordinary cases, he rather approves of using exercises, frequent

baths, fomentations with hot water, attenuant food, and escharotics,

such as copperas, misy, antimony, and the like. Galen and Aëtius give

prescriptions for various collyria. They consist principally of detergent

and caustic substances, such as sal ammoniac, squama æris, calamine, and

the like. It seems to be the disease which Haly Abbas treats of by the

name of lapidositas. (Pr. v, 51.)

_On chalazion._ We will treat more fully of the nature of this tumour in

our notes on Section XVI of the Sixth Book. It appears to be the species

of encysted tumour said by Scarpa to be well described by M. Aurelius

Severinus. (On Diseases of the Eye, 3.) Rowley describes it as a moveable

tumour in the margin of the eyelids. Aëtius recommends us to open the

tumour with a scalpel, and apply to it escharotics, such as burnt copper,

chalcitis, and red arsenic. By Haly Abbas it is called _grando_, and

the remedy mentioned by our author is recommended by him. Alsaharavius

describes it as a gross humour congealed in one of the eyelids. He

describes by the name of _alsaanac_ a fatty tumour of the eyelids which

we have sometimes met with and extracted. On the chalazion, see Celsus

(vii, 7), and Isidorus (Orig. iv, 8.)

_On hordeolum._ Most of the ancient authors treat of this trifling

complaint in much the same terms as our author. Scarpa evidently is

mistaken in making the hordeolum and chalazion to be the same complaint.

Haly Abbas describes it as being an oblong abscess resembling a grain of

barley on the extremity of the eyelid. He recommends general depletion,

and nearly the same remedies as our author; also a cataplasm of galbanum.

Alsaharavius treats of it in a similar manner. Rhases particularly

recommends melted wax as an application to it. He also speaks favorably

of the diachylon plaster.

_On lice in the eyebrows._ Stavesacre is a very ancient remedy for

pediculi on all parts of the body. Celsus lays down very minute

directions for the constitutional treatment, and recommends a local

application containing sandarach, or the red sulphuret of arsenic.

Avicenna makes mention of sulphurous baths. Haly Abbas recommends general

purging, various stimulant applications, and abstinence from figs. Our

author states, in Section LXXXI of the First Book, that figs engender

lice. Alsaharavius directs the eyebrows to be rubbed with sal ammoniac,

alum, salts, &c. Jesu Haly recommends purging with hiera, the frequent

use of the bath, and applications containing stavesacre, sulphur, alum,

nitre, sal ammoniac, vinegar of squills, and the like. Rhases recommends

a powder containing quicksilver.

_On madarosis, or milphosis, and ptilosis._ Aëtius, Actuarius, and

Nonnus treat of these diseases in similar terms. The calliblephara are

fully described by Galen (sec. loc. iv.) Haly Abbas seems to allude to

these complaints in the following sentence: “Palpebrarum autem casus ex

humiditate fit acutâ aut alopetia, et quidam fit cum palpebrarum grossite

et duritie, ruboreque, et dolore.” His remedies are like our author’s.

The same may be said of Alsaharavius.

_On trichiasis._ Our author’s treatment is mostly imitated from Galen. We

shall treat more fully of the disease in the Sixth Book. Scarpa places

no confidence in the operation of plucking out the hair, and yet it is

favorably spoken of by most of the Greek and Arabian authorities, as,

for example, Aëtius, Avicenna, Alsaharavius, and Haly Abbas; and also by

Rowley, and other modern oculists. Haly, like our author, directs us to

touch the part from which the hair has been plucked with the blood of

a frog, or of a dog’s tick, or with the milk of a fig, or the gall of

a hedgehog. Alsaharavius makes mention of the same remedies, and also

of the mode of treating it by agglutinants. According to Actuarius, the

disease consists in certain of the ciliary hairs being turned inwards and

hurting the eyeball. (ii, 7.)

_On encanthis and rhyas._ Scarpa removes the encanthis by a surgical

operation; but, from our own experience of the effect of septic

medicines, such as arsenic, in similar complaints, we cannot doubt the

propriety of the ancient practice in certain cases. Galen’s applications

contain copperas, misy, sal ammoniac, and the like. Those of Aëtius

are nearly the same. He remarks that seamen are particularly liable to

the complaint. Haly Abbas recommends general evacuation and escharotic

applications.

_On ulcers._ In the description of the ulcers of the eye our author

follows Aëtius. He, however, evidently was much indebted to Galen (sec.

loc. iv.) The Arabians copy from Galen, describing like him seven

varieties of ulcer, which they treat upon general principles. See, in

particular, Haly Abbas (Pract. v, 41.) Opium is one of his medicinal

articles. Ceruse, starch, gum arabic, albumen, &c. also occur. See also

Jesu Haly (ii, 50,) and Rhases (Cont. ii.) Celsus recommends various

compound applications for ulcers of the eye, which he treats of very

minutely.

The collyria mentioned in this section will be found described in the

Seventh Book of this work.

_On procidentia._ Galen correctly describes procidentia as arising from

ulceration of the cornea and protrusion of the iris. (De Diff. Morb.

13.) Aëtius has treated of it with his usual accuracy. He recommends

various escharotic applications containing chalcitis, misy, and the like,

which, when properly managed, may probably have answered the purpose

equally well with the antimonium muriatum and argentum nitratum used by

Scarpa and other modern oculists. Avicenna treats of the complaint like

the Greeks. Some of his compositions contain antimony with ceruse, burnt

lead, and the like. Haly Abbas describes the disease minutely in nearly

the same terms, and recommends nearly the same remedies as our author,

namely, such as are of a repressing nature. He properly remarks that it

is one of the consequences of ulceration of the cornea. Alsaharavius

gives a similar account, and recommends general depletion.

_On hypopyon._ Aëtius gives much more judicious directions for the

treatment of this complaint than our author. He properly recommends

general bloodletting at the commencement, and afterwards local, by means

of leeches and cupping instruments; and then emollient, paregoric, and

discutient applications to the eye. Galen (Meth. Med.) makes mention of

an oculist in his time who effected wonderful cures in this complaint

by shaking the patient’s head. When this does not succeed, Galen

directs us to perforate the coats of the eye, and let out the matter.

(See Book Sixth.) Scarpa does not approve of this practice, unless the

collection of matter be considerable. However, Plempius and most of the

earlier modern authorities in surgery decidedly recommend it. Haly Abbas

recommends a discutient cataplasm containing opopanax, ammoniac, and

fenugreek. Alsaharavius properly directs bleeding and masticatories at

the commencement.

_On leucoma._ Aëtius directs his attention principally to the general

treatment, and properly cautions against the use of strongly stimulant

applications, as they only increase the evil. He allows afterwards

moderately detergent ones, containing verdigris, burnt copper, squama

æris, flos æris, sal ammoniac, and the like. His compositions are taken

for the most part from Galen’s works (de Med. sec. loc. iv.) Aëtius

disapproves of applications for changing the colour of the leucoma.

Alexander recommends the detergent applications mentioned by our author.

Nonnus copies from him. Haly Abbas describes it by the name of _albedo

oculi_, and recommends nearly the same remedies as our author. He

particularly praises green glass finely pulverized, which is still a

popular remedy in Scotland. Alsaharavius makes mention of the juice of

the lesser centaury as an useful application. Scarpa speaks favorably

of this remedy, and further recommends the Sapphirian collyrium, the

ingredients of which are similar to those which entered into the ancient

applications. It consists of a solution of scr. ij of sal ammoniac

and gr. iv of ærugo in oz. viij of aqua calcis, allowed to stand for

twenty-four hours, and then filtered. Rhases recommends an ointment

containing arsenic.

_On pterygium._ Aëtius correctly remarks that pterygium generally begins

from the inner canthus, rarely from the outer, and scarce ever from above

or below. He gives prescriptions for a variety of applications, which,

like our author’s, contain burnt copperas, magnesian stone, sal ammoniac,

and the like. Galen briefly commends the same. Nonnus, Serapion, and

the others approve of this practice. Modern oculists, however, trust to

nothing but the operation, which will be described in the Sixth Book.

Haly Abbas describes the disease very accurately by the name of _ungula_;

and recommends general bleeding, purging, restricted diet, and a variety

of collyria. Alsaharavius gives the same account of the ungula, and

when it becomes callous (nervosus), recommends an operation. Jesu Haly

recommends, before attempting a surgical operation, to make trial of

escharotic applications. Rhases also approves of this plan of treatment.

The most active ingredients in his prescriptions are sal ammoniac,

copperas, and arsenic. Some of his compositions are merely detergent.

_On carbuncle and cancer._ we are not aware that the parts about the eye

are particularly liable to anthrax, nor do we recollect to have ever

met with such a case; and yet, as Alexander and our author remark, the

disease may occur there as well as in other parts of the body. Rowley

describes carbuncle both of the eye and eyelids. Aëtius has given a

very circumstantial account of the symptoms and treatment of anthrax.

He forbids the early application of cataplasms, and seems to depend

most upon constitutional treatment, by clysters, purging, and bleeding.

Afterwards cooling and styptic fomentations are to be applied by means of

a sponge, along with other treatment similar to our author’s. Alexander’s

plan of treatment is nearly the same, and is laid down with excellent

judgment. That of Oribasius is similar.

To relieve the pains of cancer, Aëtius recommends soothing applications

and an anti-stimulant diet, consisting principally of milk. Avicenna,

Alsaharavius, and most of the ancient authorities join in praising

milk as the principal article of food in cancer of the eye. Avicenna’s

applications contain ceruse, opium, and the like. Haly Abbas recommends

general bleeding, if the patient’s strength permit, with emollient

lotions, and collyria: the diet to consist of birds, kids, and lambs.

According to Rhases, cancer of the eye is attended with excruciating

pains, redness, and distension of the veins, loss of appetite, and

inability to bear all applications.

_On mydriasis._ Aëtius treats mydriasis, or preternatural dilatation of

the pupil, like our author, by general and local bleeding, clysters, an

attenuant diet, and friction of the extremities. They no doubt considered

that the disease arises from congestion in the brain. Avicenna refers

the disease to cephalæa and injuries of the head. Scarpa quotes with

approbation the account given by Celsus of mydriasis, by which he thinks

was meant not only cases of dilated pupil but also of incipient amaurosis

occurring suddenly. Celsus approves of opening the bowels freely. Haly

Abbas describes the disease, but thinks it almost incurable. It sometimes

occurs, he says, from a blow, and sometimes from abscess within the uva.

Alsaharavius attributes the disease to congestion, and directs bleeding,

purging, and cooling applications. He calls it _dilatatio_. According to

Jesu Haly, it is produced by dryness of the uva, or abscess within that

tunic, or pressure on the brain. The first species is to be relieved

by diluents and relaxants, such as the warm bath. For the second he

recommends suitable cataplasms and purgative pills. The third is to be

treated by general and local bleeding, cupping, and fomentations with

water, vinegar, and salt. _Constriction of the pupil_ he directs us

to treat upon the same principles as our author. His account of it is

mostly taken from Aëtius. Leo describes, under the name of _symptosis_,

constriction of the pupil; under that of _paremptosis_, an affection of

the optic nerves; under that of _platycoria_, a preternatural dilatation

of the pupil, for which he recommends astringents; and under that

of _myocephalos_, procidentia of the lens, for which he recommends

astringents, and even copperas.

_On nyctalopia._ Aëtius recommends, according to the circumstances of

the case, general and local bleeding, drastic purgatives, errhines, and

the like. He, Celsus, Alexander, Rhases, Avicenna, Mesue, Jesu Haly,

Haly Abbas, and Alsaharavius, like our author, speak favorably of the

application from the roasted liver of a goat. Instead of it Hippocrates

recommends the liver of an ox. His treatment otherwise consists of

bleeding, purging with elaterium, and, in desperate cases, of trepanning

the head at the bregma and evacuating the water. (De Visu.) The general

treatment of the Arabians is like that of the Greeks. Thus Alsaharavius

recommends bleeding, purging with hiera, gargles, sternutatories, and the

like. This is also the practice of Jesu Haly.

The term nyctalopia is not used by all the ancient authorities in the

same sense. Thus Hippocrates applies it to that morbid state of vision in

which the patient is blind during the day but sees better in the evening.

Aëtius, Alexander, Paulus, and Actuarius, on the contrary, apply it to

that state in which the patient sees clearly during the day but becomes

blind in the evening.

_On glaucoma and suffusion._ Aëtius and Oribasius give nearly the same

account of these complaints as Paulus, and yet that of Aëtius seems

slightly different. He says that there are two kinds of glaucoma: that

the first, to which the name is properly applied, arises from a dryness

and concretion of the crystalline humour, which is changed to a sea-green

(glaucum) colour; but that the other arises from a suffusion, the humour

near the pupil having become congealed and dry. According to Leo, the

affection of glaucoma arises when the crystalline humour is congealed, as

it were, and having become white, obstructs vision: this occurs in old

age and is incurable. Haly Abbas was aware that the disease is sometimes

seated in the crystalline lens, but did not know that it always is so.

Hippocrates recommends masticatories and the actual cautery. Haly Abbas

and Alsaharavius approve of making trial of remedies similar to those

mentioned by our author, before attempting the operation. Rhases forbids

bleeding when the disease arises from the state of the eye itself.

Canamusali, who flourished about the year 1258, recommends a seton in

the nape of the neck for the cure of suffusion. (De Oculis, vi.) Rhases

considers the case incurable when the pupil has become insensible to the

stimulus of light.

_On amaurosis and dimness of vision._ Galen and Aëtius give a very

circumstantial account of the causes and treatment of amaurosis. They

state that the disease either comes on suddenly, in which case they refer

its origin to obstruction and paralysis of the optic nerve, or gradually,

when they believe it occasioned by a thickening of the coats of the optic

nerve, or a change of the spirits, or of the humours of the eye. They

enumerate various causes of it, such as injuries of the head, heat or

cold, indigestion, or the like. When the disease occurs suddenly, they

approve of general or local bleeding, such as cupping the back part of

the head, and active purging. In the other case general depletion is not

required, but the treatment is otherwise nearly the same, attention being

particularly paid to the state of the bowels. They forbid emetics after

food, but approve of errhines. They recommend in certain cases sinapisms

to the head.

The Arabians treat the disease upon the same principles. Haly Abbas

describes amaurosis among the affections of the optic nerves, and

recommends for it general bleeding, purging, and the saffron collyrium.

Alsaharavius remarks that it often arises from the state of the stomach,

which, in that case, will require the principal attention. Avenzoar

blames Galen for giving up as desperate cases of amaurosis which occur

suddenly. He recommends general and local bleeding, with repellent

applications to the head.

_On strabismus._ See Galen (de Causis Morborum); Oribasius (Synops. viii,

49.)

Avicenna properly remarks that squinting is occasioned by debility or

spasm of some of the muscles of the eye. He and Rhases recommend the

same treatment as our author. Avicenna also makes mention of a mask.

Haly Abbas, who appears to have been intimately acquainted with anatomy,

of which his work contains a valuable compendium, explains minutely the

cause of the disease, which he attributes to an unequal contraction of

the muscles of the eye. See also Alsaharavius and Jesu Haly. Jesu, like

our author, directs us to fasten a piece of black or red cloth on the

angle of the eye at the temples, when the eye inclines towards the nose.

He correctly explains that the complaint arises from spasms or paralysis

of some of the muscles of the eye.

_On ecpiesmus, or protrusion of the eyes._ This section is taken from

Oribasius. (Syn. viii, 50.)

Aëtius, Avicenna, and Rhases recommend the same treatment for this

complaint, which can only arise from suffocation, violent straining, or

swelling of the eye.

_On synchysis, or confusion of sight._ Aëtius and Oribasius treat of this

affection in nearly the same words.

Rowley defines _synchysis_ to be “a solution of the vitreous humour into

a fine attenuated aqueous fluid.” It does not appear to us that the

ancients understood it in this sense, or that they meant anything more by

it than a confusion or disorder of the eye occasioned by a blow.

_On myopia._ This section also is taken from Oribasius or Aëtius.

Alsaharavius treats of it by the name of _alhayn_. He says it sometimes

arises from external causes, such as exposure to snow and cold, in which

case he directs us to apply stimulant fumes to the eye and refrigerants

to the head. Although the ancients were aware of the magnifying powers

of _specula_ (as appears from Seneca, ‘Quæst. Natur.’), it is doubtful

if they ever thought of applying this knowledge to any useful purpose;

and hence none of the Greek, Latin, or Arabian medical authors make

any mention of spectacles or magnifying glasses as a remedy for this

complaint, or for weakness of sight. Dutens, however, maintains that they

were not unacquainted with telescopes. (p. ii, 10.) From a passage in

Iamblichus it has been supposed that they also used microscopes. (Vit.

Pyth. 26.)

One of the causes of myopia mentioned by Jesu Haly is enlargement of the

crystalline lens, which he recommends us to endeavour to lessen by means

of dissolvents. (De Oculis, iii, 6.)

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