Pseudo retinitis pigmentosa in a case of missed intraocular foreign body

A 35-year-old man presented with history of painless, progressive loss of vision in the left eye for the past 7 years. There was history of trauma to the same eye with an iron object 7 years prior. Fundus examination revealed pigmentary retinopathy (unilateral advanced retinitis pigmentosa (RP)-like picture). X-ray orbits were suspicious of retained intraocular foreign body (IOFB). CT orbits confirmed the presence of IOFB. Electroretinogram revealed depressed responses. Right eye examination was within normal limits. A diagnosis of siderosis bulbi with unilateral pseudo RP-like fundus was made. No surgical intervention was planned for IOFB in view of poor visual prognosis.