524 crrcLOPEDiA of live stock and complete stock doctor. 



is from half an inch to two inches in length , and the size of a hair. It 

 is white in color, and is very active, squirming about in the eye, appar- 

 ently very much at home. It is probably taken into the stomach in the 

 egg form, and after hatching, the mite works through the coats of the 

 intestines and blood vessels, is carried by the circulation till it finds an 

 agreeable medium, and there developes. It causes a great amount of in- 

 flammation and pain in the eye, in which it can be plainly seen by any 

 observer. 



What to do. — The only remedy is to puncture the cornea and evacuate 

 the anterior chamber, when the worm will come out along with the other 

 contents. This, however, is a delicate operation, and should never be 

 attempted by any but a qualified veterinary surgeon. ( See chapter oi? 



operations.) 



TK.. Entropium. 



This is inversion of the eyelids, causing the lashes to turn in upon the 

 eyeballs, and giving rise to an irritating disease called Trichiosis. It is 

 due to excessive thickness of the lid above the rim, so that the rim is 

 made to turn in. 



What to do. — It is treated by cutting out an elliptical section of the 

 skin, and sewing the wound up again, to shoi-ten the lid. Let the long 

 axis of the ellipse r-in lengthwise with the eyelid, horizontally. 



X. Ectropium. 



This trouble is consequent upon an inflamed and thickened conjunc« 

 tiva. It is a turning out or eversion of the lids, showing their red mu- 

 cous membranes continually. It is most common in the lower lid. It is 

 treated by an operation to remove an elliptical section of the conjunctiva, 

 the after treatment being the same as prescribed for simple ophthalmia. 



XI. Torn Eyelids. 



The lids are frequently torn by getting caught in hooks, nails, etc. 

 When possible, sew them up at once. Bring the edges neatly together 

 and sew them with fine silk, making fine stitches, and dress two or three 

 times a day with lotion No. 39. Tie the horse in the center of a wide 

 stall, with a line from each side, and let him eat off the floor, to prevent 

 him from rubbing his head and tearing the laceration open again. 



xn. Cancerous Tumors in the Eye. 



These, though rare, are occasionally met with in the horse, and their 

 only treatment is to extirpate them by cutting out the eye. Cancerous 

 growths are always malignant, and spread to surrounding tissues. (See 

 chapter on operations.) 



