DEPARTMENT OF SURGERY. 
213 
be contracted by myotics ; the eye must be protected from light 
by bandages or hood (Fig. 51) ; and if it becomes necessary to 
FIG. 51. 
HOOD TO PROTECT THE EYE AND EXCLUDE THE LIGHT. 
establish drainage this may be accomplished by sclerotomy. 
4. Parasites in the Anterior of the Eye .—It is unnecessary 
to trace the life history of these parasites ; it suffices to know 
that they are worms and the larvae of a parasite that gains 
entrance into the anterior chamber of the eye and floats in the 
aqueous humor. Its length varies from 1 to 5 cm. Its color 
is white in the early period of its existence, but changes in the 
course of time, with the nature of inflammation produced by its 
presence in the humor. These worms may exist in the anterior 
chamber for considerable time before causing any disturbance, 
but eventually they will produce an inflammation and the 
exudate will accumulate in the chamber and changes the con¬ 
sistency of the aqueous humor. 
Treatment .—Paracentesis is the proper course to adopt in 
such instances. The cornea must be punctured and the worm 
forced out through the opening. The point selected for the 
puncture should be at the outer and upper sclero-corneal mar¬ 
gin (Fig. 49-a). When the worm is removed, the eye is dressed 
carefully, and dressings allowed to remain in position for at least 
two or three days. The patient should be allowed to remain 
