DETACHMENT OF THE RETINA. 



This may occur in any case of retinitis or choroiditis. It is 

 especially common in recnrrent ophthalmia in horses. It may 

 also occur through the dragging by contracting inflammatory pro- 

 ducts in organization. Spontaneous recoveries have taken place 

 through re-absorption, and attempts have been made by the in- 

 jection of iodide lotion to hasten this, or more safely by rest and 

 diaphoresis. Puncture and aspiration have also been tried with 

 most varied results. Asa rule in the lower animals the treatment 

 of the inflammation, with rest, a pressure bandage, and pilo- 

 carpin will be indicated. 



RETINAL HEMORRHAGE. 



This occurs in inflammations of the retina or choroid, also in 

 degenerations of the vascular walls and as a result of traumas, or 

 poisons. Schindelka quotes a case in a dog from ptomaines, 

 Eversbusch, one from scurvy in the dog, Appenroth, one in a 

 calf from a blow with a cow's horn, and others in cats and horses 

 from traumas. It is present to a .slight extent in all inflamma- 

 tions of the retina. With the ophthalmoscope the recent lesion 

 appears as a bluish red blotch on a bright red ground, and the 

 older lesion of a brownish red. Rest and a pressure bandage may 

 be employed after subsidence of the inflammation. 



TUMORS OF THE RETINA. 



Eversbusch found subretinal cysts in a 24 year old horse, Mer- 

 kel and others have found similar bodies in old dogs and cattle. 

 Sarcomata and melanosarcoma are found on the .surface of the 

 choroid in gray horses, implicating the retina. The only remedy 

 is enucleation of the bulb. 



439 



