WS Pa ee 
AND LECTURES. 105 
continues to recur and eventually results in a cataract; 
when this occurs the troubfe subsides. It may affect either 
one or both eyes at the same time. 
WHAT TO DO. 
This trouble can not be cured, but can be alleviated by 
using cold applications, keeping patient in a dark place, 
and seeing that the bowels are kept well open. 
Glass Eye. 
This is a paralysis of the optic nerve with no alteration 
of the structure of the eye, aside from the loss of power of 
seeing 
Cause—Injuries to the brain and pressure upon the optic 
nerve are the most common causes, but it may be the re- 
sult of very high fevers. 
HOW TO KNOw IT. 
The eye thus affected usually presents a white, glassy 
appearance. It may be present in one or both eyes. In 
many cases the sight of the animal is seriously involved. 
WHAT TO Do. 
Treatment is valueless as a cure can not be hoped for. 
Inflammation of the Iris. 
This is an inflammation of that portion of the eye form- 
ing the pupil of it and giving color to it 
Cause—Constitutional disorders, exposure to and facing 
severe winds, extremes of light and darkness, etc. 
HOW TO KNOw IT. 
A pink ring is seen around the white coat forming the 
back part of the eye, the haw is drawn up, the eye 
