A child presents with night blindness, delayed dark adaptation. Which investigation is to be done fuher to confirm the diagnosis?: (A) Dark adaptometry, (B) ERG, (C) EOG, (D) Retinoscopy
Answer is B. Retinitis pigmentosa * APOPTOSIS OF RODS * AUTOSOMAL RESSECIVE * AUTOSOMAL DOMINANT * X LINKED - WORST PROGNOSIS C/F* NYCTALOPIA * RING SCOTOMA * TUBULAR VISION O/E- TRIAD * PALE WAXY DISC* ARETRIOLAR ATTENUATION* BONE SPICULE PIGMENTATION ( MOST CHARACTERISTIC ) Gold standard for Dx - ERG EOG - Gold standard for best diseaseRetinoscopy - differentiate between type of refractive error