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 case 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. 



