172 OPHTHALMOLOGY FOR VETERINARIANS 



in the animal. It is well to place some absorbent 

 powder on the fissure and apply a compress bandage. 



Healing takes place readily, and a good stump is 

 soon formed for an artificial eye. These, for the animal, 

 are usually made of hard rubber, as they are less easily 

 broken, and the coloring conforms more to animals' 

 eyes than those made of glass. 



An artificial eye should not be placed until the wound 

 is healed and there are no inflammatory symptoms 

 present. 



Prolapse of the Eyeball. — It is understood by some 

 of the laity that "the eyeball can be taken out, scraped, 

 and put back again into the orbit." Any one with a 

 knowledge of the eyeball and its muscular attachments 

 can readily see the folly of this assumption. In the 

 dog, however, the eyeball is not held very securely 

 in the orbit, because the anterior bony arch is wanting, 

 and the eyeball is supported only by the ligamentous 

 attachments and the lids. For this reason, the eyeball 

 of the dog is often prolapsed or dislocated forward by 

 traumatism. It is said also to prolapse by reason of 

 inflammatory processes within the globe, but this 

 cause must be exceedingly rare. It is more probable that 

 progressive tumors within the orbit might be the cause. 



Prolapse of the eyeball presents a very peculiar and 

 ugly appearance. The writer once saw an English bull- 

 dog whose eyeball was dislocated outward and down- 

 ward by fighting with another dog. It was held in this 



