![]() ![]() Damage to the uveal tissue or vasculature2,3 causes the release of tissue factors and chemoattractants, resulting in vasodilation and changes in vascular permeability.3 These changes lead to a breakdown of the blood-aqueous barrier or the blood-retinal barrier, allowing protein and cellular accumulation.2Ĭlassifying uveitis can help you determine what diagnostic steps will be required when presented with a cat that has uveitis. Uveitis is defined as any condition that involves uveal tract inflammation. The choroid is the main source of blood and nutrition for the outer layers of the immediately adjacent retina.1 The ciliary body provides nourishment for and removes wastes from the cornea and lens via the production of aqueous humor. The iris divides the anterior ocular compartment into anterior and posterior chambers and controls the quantity of light entering the posterior segment through the pupil. The uvea, or vascular tunic of the eye, is composed of the iris and ciliary body anteriorly and the choroid posteriorly. In this article, we review the pathophysiology, clinical presentation, causes, and treatment of uveitis in cats. As such, it presents a great challenge for practitioners with respect to diagnosis and treatment. ![]() Uveitis often occurs secondary to an acquired ocular or systemic disorder however, in many instances the underlying cause is not identified despite extensive diagnostic testing. Uveitis is a common and painful ocular disease in cats that can eventually lead to blindness. ![]()
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