title: Letter: Retinitis pigmentosa and squint in Africans.
mesh_terms: D000351:Africa, Eastern; D001766:Blindness / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D012174:Retinitis Pigmentosa / Q000150:complications / Q000453:epidemiology*; D013285:Strabismus / Q000453:epidemiology*