Approximately 75% of uveitis cases are considered which type?

• A. Posterior
• B. Intermediate
• C. Anterior
• D. Pan-Uveitis

Answer: (C)

Uveitis is categorized by where the inflammation primarily occurs in the uveal tract. The anterior segment—the iris and ciliary body—is the most commonly affected, so anterior uveitis accounts for about three-quarters of cases. This predominance stems from many inflammatory or autoimmune processes targeting the anterior chamber, and since signs are readily detectable with a slit-lamp exam (cells and flare in the anterior chamber, possible circumlimbal injection), these cases are frequently identified. In contrast, intermediate uveitis mainly involves the vitreous, posterior uveitis affects the retina or choroid, and pan-uveitis involves all segments, and these presentations are less common. Therefore, approximately 75% of uveitis cases are anterior.