312 The Diseases of Animals 
three times daily for twenty minutes at a time, and 
drop in a solution of boric acid (one dram of acid to 
three ounces of clear water) after each application of 
hot water. 
Infectious Keratitis or Pink-eye of Cattle 
This disease attacks cattle of any age, but especially ; 
young cattle, and is more common in the summer and 
fall, when dust and pollen are bad. 
The first symptoms noted are a profuse discharge of 
tears that run down the face. The eyelids become 
swollen and are closed to protect the eye from light. A 
small red spot appears near the center of the eyeball, 
and the inflammation is so severe that the eye is clouded 
and the animal is temporarily blind. In some animals, 
both eyes may be attacked at the same time. The ulcer 
on the eye may weaken the cornea until it bursts, and 
the animal may be permanently blind in one, rarely in 
both eyes. 
As soon as a ease is found, it should be isolated from 
other cattle and placed in a dark stall. A few drops of 
a solution of ten grains of nitrate of silver should be 
placed in the eye once daily for three days, and then 
every other day. Cold applications to the eye are 
beneficial. 
Worm in the Eye 
In rare cases, the eyes of horses may be attacked 
by a small parasitic worm (Fillaria papillosa) that can 
be seen swimming in the chamber back of the pupil. 
