In the final stages of retinal degeneration a detachment may develop.Fortunately detachment of the retina is an uncommon complication of these conditions.ĭegenerative Causes of Retinal Detachment in Cats.
Examples include fungal infections such as histoplasmosis and cryptococcosis, parasitic infestations such as larval migrans, and bacterial infections of the blood (septicemia).
Any infection that causes inflammation of the retina or underlying choroid can potentially cause a retinal detachment.Infectious Causes of Retinal Detachment in Cats Disorders that affect blood clotting include decreased numbers of platelets in the blood, decreased vitamin K levels in the body, liver disease, leukemia and cancer of the bone marrow, etc. Poor clotting of the blood can result in hemorrhaging from the retinal or choroidal blood vessels and possible retinal detachment.This can occur with over production of white blood cells (leukemias), over production of red blood cells (polycythemia), and excessive blood transfusion. Blood can also become too thick and cause circulatory problems within the retina when there are increased numbers of cells in the blood.Diseases that cause overproduction of protein in the blood include feline infectious peritonitis virus and a particular form of leukemia or lymphoma of white blood cells. It causes the blood to act almost like sludge in the small blood vessels and they can rupture or leak. With hyperviscosity syndrome there is too much circulating protein in the blood and the blood becomes very thick. Hyperviscosity syndrome can also cause retinal detachments.As fluid accumulates under the retina, the retina is pushed away from the underlying pigmented epithelium and a detachment develops. High blood pressure results in fluid leakage and bleeding from blood vessels of the retina and under the retina. High blood pressure (systemic hypertension) is the most common cause of retinal detachments in the cat.Multiple ocular defects caused by poor nutrition, exposure to radiation, or other serious infections during the pregnancyĬirculatory Causes of Retinal Detachment in Cats.Severe retinal dysplasia or folding of the retina, often associated with infections with feline panleukopenia during the pregnancy.There are instances, however, in which these types of detachments can occur: It is rare for cats to be born with retinal detachments or to develop them shortly after birth. Congenital Causes of Retinal Detachment in Cats
The underlying disease may be more of a threat to the health of the cat than the actual detachment. Therefore, in most cats, the presence of a retinal detachment is often a sign of a serious underlying disease. Retinal detachment in cats occurs most often from the accumulation of fluid under the retina, due to some pathologic process either in the eye or somewhere else in the body. The choroid is a darkly colored, vascular layer that furnishes nutrition to the retina. Retinal detachment is the separation of the retina, the innermost layer of the back of eye from the underlying pigmented epithelium and choroid. Retinal Detachment in Cats Feline Retinal Detachments
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