220 THE VETERINARY SCIENCE 



times a day. This acts as a stimulant to the nerve. Wash 

 the eye with eye wash twice a day for a few days. In buying 

 horses be particular to examine the eyes closely for unsound- 

 ness, for some of the shrewdest buyers have been nipped in 

 cases of this kind. 



5. Cancerous Growth in the Eye. 



Causes. — The causes of this are similar to those of all 

 other cancerous growths — cancer germs getting into the blood 

 and settling in the eye. 



Symptoms. — The first indication is inflammation which 

 finally terminates in a growth apparently originating in the 

 ball of the eye. This gradually develops until it hangs out 

 upon the cheek. It has an angry, red appearance and bleeds 

 freely upon very slight injury, giving the animal an unsightly 

 appearance. In some cases the bones in the vicinity of the 

 eye are diseased, causing a very disagreeable odor. Cows are 

 more subject to cancerous growths in the eye than horses. 



Treatment. — A cure may be effected in the first stages of 

 the disease by removing the eye, growth and all. Cast the 

 animal and secure him. While the head is held perfectly still 

 cut around the eye, between it and the eyelid. Lift the eye 

 up by sticking a hook into it and cut the structures off at the 

 back. Sear it with a hot iron to stop the bleeding. Dress as 

 an ordinary wound by bathing with warm water and apply 

 white lotion three times a day. After applying the lotion, if 

 the cut has an "angry" appearance apply compound tincture 

 of benzoin (Frier's balsam) with a feather to keep the growth 

 from returning. 



6. Filaria Oculi. 



This is a small white worm about the size of an ordinary 

 pin found moving about in the humors of the eye. They may 

 infest any part of the body, being found sometimes about the 

 testicles and bowels. 



Causes. — The worm develops from a microbe taken into 

 the system with the food or water. It finds its way into the 

 blood and is by it deposited in the eye or other parts of the 

 body. Horses pasturing on low wet land are more exposed 

 to it. 



Symptoms. — It grows from one-half inch to two inches 

 long, and gives rise to considerable irritation, rendering the 



