140 



THE DISEASES OF THE HORSE. 



WORM IN THE EYE 



Is rare in this country, but is common in India. It is 

 like "an eel in a basin of water," but is not always in 

 sight, for it may hide behind the iris. Dr. Gibbs (of 

 India) has seen two worms in an eye at once. He has 

 also seen a second worm appear months after the removal 

 of the first. They are peculiar to cold weather and wet 

 seasons. Similar worms are found in the stomach and 

 intestines. They probably reach the eyes through the 

 blood. If no operation is performed, blindness may result. 

 But the worm may die and become absorbed. 



2E 



Fig. 34. Trocars. An operation for "Worm in the Eye would require a 

 special trocar. 



The only remedy of course is to trocar or lance the eye, 

 an operation the skillful surgeon only can perform. 



"WATERY EYES" 



Are uncommon. The real cause of the overflow of tears 

 is obstruction of the tear canals, which run from the eyes 

 to the nostrils ; but superabundant secretion of tears may 

 sometimes occur perhaps. It seems to be analogous to 

 stricture of the urethra in man. The canal is not uni- 



