CHAPTER XIV. 
B 
DISEASES OF THE EYE. 
EFORE studying the diseases of the eye it is advisable 
to study the anatomy of the eye, found in I'art 1. 
1. Simple Ophthalmia. 
This is an inflammation of the outside covering of the 
eyes and the lining of the lids. 
Causes. — It is often the result of an injury of some kind, 
such as being struck v/ith a whip. Chafif or other foreign 
matter may set up inflammation. Extreme heat, being kept 
in a dark stable or foul air about the stable may account 
for it. 
Symptoms. — The eye is very dull and partly closed, and 
sometimes the eyelids are swollen. Water runs fron: the 
corners. It is sore to handle and very sensitive to light, and 
on account of this when brought to the light he keeps it 
closed. In a day or so a scum gradually forms over the eye 
and it presents a very irritated appearance. 
Treatment. — Endeavor so far as possible to ascertain the 
cause of the trouble and remove it. If the fault of the stabie, 
have it remedied. If caused by some foreign substance — 
chaff or such — take it out as carefully as possible without 
injuring the sensitive portions of the eye. Bathe well with 
new milk, fresh from the cow, twice a day. Apply the eye 
wash given in Part V. in and around the eye each time after 
bathing until relieved. In cases where the eyelids are much 
swollen it is well to bleed. This is done with a sharp pen- 
knife. Raise the vein below the eye by pressing the fingers 
on it; then cut and allow it to bleed until it stops of its own 
accord, which takes about half an hour. 
2. Moon Blindness (Periodic Ophthalmia). 
This is an inflammation of the inner structures of the eye. 
Causes. — Extreme heat or cold, poorly ventilated or dark 
stables, all have a tendency toward this disease. Family 
history may account for it, as it is hereditary, that is, the 
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