Pars planitis: epidemiology and clinical outcome in a large community hospital in Mexico City.

Medical records of 51 patients with a diagnosis of pars planitis (97 eyes) were reviewed. Based upon the severity of vitreous inflammation, in 34 eyes (35%) the condition was classified as mild, in 38 (39%) as moderate, and in 25 eyes (26%) as severe. Vascular sheathing was present in 51 eyes (53%), snowballs in 42 (43%), snowbanks in 29 (30%), cataract in 19 (20%), cystoid macular edema in 26 (27%), retinal detachment in 4 (4%) and glaucoma in 3 (3%) eyes. Treatment consisted of prednisone and periocular injections of deposteroids or immunosuppressive agents; 13 patients required surgery for retinal repair, glaucoma, vitreous opacities or cataract. After treatment the visual acuity improved in 58% of the eyes, did not change in 33%, and worsened in 9%.