224 Diseases of the Eyes and their Appendages. 



the contents press the membrane outwards, forming a 

 grape-like tumour, associated with blindness. 



Treatment for ophthalmia should be early and so pre- 

 vent this undesirable result. In con- 

 firmed cases, astringents i or 2. 



Glaucoma. — Disease of the vitre- 

 ous humour, causing intermingling of 

 the fluid, sometimes passing into a 

 state of semi-coagulation, or par- 

 tially calcareous, partly cartilaginous 

 states, causing perfect blindness. 

 Treatment is of no avail. 

 Amaurosis. — This is commonly 

 known as Gutta-serena or Glass Eye. 

 In one form it appears as an ac- 

 staphvioma or Bulging companiment of brain disturbance 

 of the Cornea. arising from sympathy with the diges- 



tive organs when affected by poisons, 

 or usual disease. It is also the result of disease of the 

 optic nerve. The first may recover ; the latter never. 

 The eye has a staring appearance from extreme dilatation, 

 and is motionless. The pupil has a background which 

 reflects light powerfully, resembling crystal, and blindness 

 is evident from the liability of the animal to run against 

 objects in his way, as well as by the high-stepping and 

 feeling kind of action. Sometimes only one eye is 

 diseased. It often follows specific ophthalmia, and, like 

 it, is incurable. 



Strabismus, or Squinting, is symptomatic of brain 

 disturbance, and is usually removed by such treatment as 

 successfully overcomes that state. 



diseases of the appendages of the eyes. 



These are confined to the eyelids and eyebrows, &c. 



Ectropium, Eversion of the Eyelids. — The lining- 

 membrane is exposed in a series of bulging folds, the 

 result of swelling from compression. It is rare, but 

 proves troublesome, and calls for a surgical operation 

 when simple means have failed. 



Entropium is the opposite of Ectropium. The edge 



