About Retinitis pigmentosa all are true EXCEPT:
High-Yield Explanation
ANSWER: (C) Early loss of central visionREF: khurana 4th ed p. 260-262Retinitis pigmentosaNight blindness is earliest featureDefective dark adaptationPartial or ring scotomaTubular visionLoss of central vision by age of 50-60 yearsFundus changesRetinal pigmentary changes typically perivascular and resemble bone corpuscles in shapeAttenuated or narrowed retinal arteriolesPale and waxy optic discs