Unilateral Retinal Arteritis and Macroaneurysm in Sarcoidosis.

Background: Sarcoidosis, an idiopathic systemic disorder characterized by noncaseating granulomas, is often associated with granulomatous uveitis. Anterior segment involvement can present with mutton-fat keratic precipitates, anterior chamber cell, and iris nodules. Sarcoid associated posterior uveitis may present with vitritis, retinal vasculitis, and choroidal lesions.Case summary: Sarcoid-associated retinal vasculitis is classically thought of as predominantly involving veins, but in this case report we describe a 76-year-old Caucasian woman presenting with bilateral posterior uveitis, unilateral optic nerve head granuloma, and retinal arteritis as the first manifestation of ocular involvement in systemic sarcoidosis.Conclusion: This case describes the uncommon first manifestation of ocular involvement in systemic sarcoidosis presenting with unilateral retinal arteritis, macroaneurysms and optic nerve head granuloma.