CHAPTER X. 
DISEASES OF THE EYE. 
Diseases of the eye are by no means so common in the 
horse as in the human family, but some of them are of 
much moment to the owner when the usefulness of the ani- 
mal is taken into consideration. Any defect of the eye de- 
tracts largely from the value of a horse in the estimation of 
dealers, hence it is of the utmost importance that we study 
carefully some of the more common affections of this organ. 
Moon Blindness. 
In the great west multitudes of good horses lose their 
powers of seeing through the baneful influences of this 
disease. 
Cause—The cause is an hereditary one. 
HOW TO KNCW IT. 
There is swelling of the whole eye and all the parts sur- 
rounding it; it is closed or nearly so; the mucous mem- 
brane is very red, the tears run down the cheek and a whit- 
ish pus may be observed in the lower portion of the eye. 
In a few days the inflammation subsides, but the pupil will 
appear ragged, and in the course of a month or two the | 
trouble recurs in a more aggravated form. The trouble 3 
