DISEASES OF THE EYE. 305 



the cranium whicli interfere with the functions of the o-pt'ui 

 nerve. This condition is incurable. 



fungus Bacmatodcs. 



This is a malignant, cancerous disease attacking the cavity 

 of the orbit. It is most commonly seen attacking cattle, but 

 sheep are by no means exempt. It makes its first appearance as 

 a small red spot at the side of the orbit, which enlarges rapidly, 

 involving not only the eye itself but the bones and tissues sur- 

 rounding it. 



Creatment. 



Consists on its early removal, to accomplish whicli the 

 eye must also be extirpated. If the bones are already attacked 

 they must be scraped and the parts cauterized. The actual 

 cautery being preferred, the removal to be successful must be 

 complete, other-\*ise the growth will quickly recur. Unless the 

 sheep be a very valuable animal and it is desired to keep it for 

 breeding purposes no treatment should be attempted, but as soon 

 as the condition manifests itself the patient shoiild be turned 

 over to the butcher. 



Opacity of the Cornea. 



Is a seqviel to inflammatory conditions of the eye, such as 

 ophthalmia. It is due to the organization of the exudates which 

 follow inflammation. This is of very common occurrence in 

 sheep, due to the fact that unless the animal is valuable or is a 

 member of a very small flock, ophthalmia would pass unnoticed 

 by the flock-owner, and if observed would not as a vvile be 

 thought worthy of treatment, in which event the disease running 

 its course uninterrupted would in- the majority of cases terminate 

 with this condition. 



Udounds in the Gyc. 



These, when occurring in the conjunctiva, would be accom- 

 panied by all the symptoms of simple ophthalmia. When the cor- 



