Species affected: Cats, dogs
Background: Dogs can have retinal problems related to a genetic disorder called progressive retinal atrophy (no known cause), sudden acquired retinal atrophy (SARD), retinal detachment (especially due to hypertension), retinal hemorrhage from a number of causes like coagulopathies, toxins like lead poisoning, and nutritional problems like thiamine deficiency (rare). Trauma can lead to a torn or detached retina and perforating eye injuries may extend an infection to the retina. Systemic infections may also inflame the retina. Diseases such as diabetes mellitus are commonly the cause of permanent retinal damage.
Symptoms: Loss of vision is often the main presenting sign.
Diagnostics: Ocular exam.
Special Notes: A taurine deficient diet for cats can be a primary reason for retinal damage.
Principles for Supplementation: Correct nutritional deficiencies; antioxidants with affinity for ocular tissue are very beneficial.