These are sometimes fine shot particularly in dogs, and splinters of
iron and steel in other animals. Their presence can sometimes be made
out by careful focal illumination. If septic they cause violent iritis
and panophthalmia. If aseptic they may sometimes cause little trouble.
If they can be exactly located, they should be removed at once before
the aqueous humor and cornea become clouded. If the offending body is a
piece of iron or steel and can be reached by a magnet introduced through
the original wound or through one made with a lancet in the edge of the
cornea it may be extracted by this means. If it is shot or other body
that is not attracted by a magnet the portion of the iris in which it is
entangled may be drawn out with forceps and snipped off with fine
scissors. Due antiseptic precaution must be exercised.