Equine infectious anemia is a disease caused by a contagious virus that is potentially fatal. The immune system attacks and destroys the red blood cells that are affected by the virus, which leads to the anemia (decrease number of circulating red blood cells).

Glaucoma is a disease which occurs when the intraocular pressure increases inside of the eye. Intraocular pressure increases due to a decrease in outflow of aqueous humor (the fluid within the eye). The optic disk, which is located in the back of the eye, is the connection between the eye and the brain. This structure can be damaged when...