Retinitis pigmentosa and congenital ocular toxoplasmosis: a rare coexistent case presentation

Retinitis pigmentosa (RP) is the term used for a group of disorders that are characterized by inherited, progressive dysfunction, cell loss, and eventual atrophy of retinal tissue. Ocular toxoplasmosis can cause blindness secondary to the retinitis present in the posterior pole of the eye or vitreoretinal complications in the acute or recurrent form of the disease. A 30-year-old male patient presented with the complaint of diminution of vision of both eyes since birth, especially at night. The best corrected visual acuity was hand movement perception in the right eye and finger counting close to face in the left eye with projection of rays full in all quadrants (both eyes). Fundus photograph and optical coherence tomography macula confirmed fundal changes characteristic of RP and large, punched out, healed macular scar, preliminarily appearing as a congenital toxoplasmosis scar. A thorough literature search revealed only one such previously reported case report.