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 inflammations 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.