CHAPTER XIV. 

 DISEASES OF THE EYE. 



BEFORE studying the diseases of the eye it is advisable 

 to study the anatomy of the eye, found in Fart I. 



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 with a whip. Chaff 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 from 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 stable, 

 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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