CHAPTER XII. 



DISEASES OF THE EYE. 



OPHTHALMIA, PROTRUSION OF THE 



CATARACT, EYE-BALL, 



AMAUROSIS, EXTIRPATION OF THE 



IRITIS, EYE, 



ENLARGEMENT OF THE HAIRY TUMOR ON THE 



HAW. CORNEA. 



OPHTHALMIA. 



The dog, though not liable to many of the diseases affecting 

 the visual organs of the human being, is nevertheless fre- 

 quently the subject of some of the more prominent ones. 

 Ophthalmia or inflammation of the mucous membrane lining 

 the eyelids and covering the ball is very commonly met with, 

 especially in sporting dogs. 



Causes. — External violence, as blows, bites, pricks from 

 thorns, cat-scratches ; or irritation from the presence of foreign 

 bodies, as dust, grit, inverted lashes, accumulated pus, soap- 

 suds, etc. ; irritating vapors, particularly stable effluvia, or 

 that of undrained and neglected kennels ; damp and cold. 



Ophthalmia may be sympathetic with ether diseases, as 

 distemper and disorders of the digestive organs. 



Symptoms. — Simple ophthalmia commences with intolerance 



of light, deflux of tear's, and repeated closing of the eyelids. 

 (176) 



