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 moviiig 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 
