As to reading while lying down in bed or on a lounge, I can see no
objection to it so far as the eyes are concerned, provided the book is
held in such a position that the eyes do not have to be rolled down
too far. Unless the head is raised very high by pillows, however, it
will be found very fatiguing to hold the book high enough, not to
mention the danger of falling asleep, and of upsetting the lamp or
candle, and thus setting the bed on fire. Many persons permanently
weaken their eyes by reading to pass away the tedious hours during
recovery from severe illness. The muscles of the eyes partake of the
general weakness and are easily overtaxed. Persons in this condition
may be read to, but should avoid the active use of their own eyes.