This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Dystrophies and Degenerations, Subject name: Ophthalmology
About Retinitis pigmentosa all are true EXCEPT: 
Select and explain. 
A. Night blindness, B. Waxy disc, C. Early loss of central vision, D. Attenuation of retinal vessels
C: Early loss of central vision
Answer: C: Early loss of central vision 
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