I was a vet. Today a three-year residency is still required, Carter said, but residents are able to treat animals instead of humans. That includes cataract surgery in deer, corneal transplants for coyotes, and operations on dogs, cats, horses, tigers and a one-ton walrus. We must be absolutely scrupulous in removing the contents, or the surgery will fail. Carter said treatment is easiest when people bring their pets as soon as they suspect an eye problem, instead of hoping it will go away.
Common clues are visible cataracts, or the pet running into things or falling.