DISEASES OF THE EYE. ' 297' 



quently exhibited as a "snake in the eye."^ When present in the 

 eye it causes inflammation and has to be removed through an incision 

 made with the lancet in the upper border of the cornea close to the 

 sclerotic, the point of the instrument being directed slightly forward 

 to avoid injury to the iris. Then cold water or astringent antiseptic 

 lotions should be applied. 



Filaria conjunctivw, resembling Setaria equina very much in size 

 and general appearance, is another roundworm which has been found 

 in the eye of the horse. 



The echinococcus, the cystic or larval stage of the echinococcus 

 tapeworm of the dog, has been found in the eye of the horse, and a 

 cysticercus is also reported. 



1- Tills worm is normally a parasite of the peritoneal cavity, and is probably transmitted 

 from one horse to anotlier by some biting insect which becomes Infected by embryos in the 

 blood. — M. C. HAI.L. 



