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Ophthalmology General 8f79dfb6

Fundus in retinitis Pigmentosa is ?

A
White spots with red disc
B
Jet- black spots with pale-waxy disc
C
No pigmentation
D
Dilatation of aerioles
High-Yield Explanation
Ans. is 'b' i.e., Jet- black spots with pale-waxy disc Examination findings in retinitis pigmentosa Ophthalmoscopic findings are characteristic and include :- Retinal pigmentary changes (Bone spicule intraneural retinal pigmentation) : - Retina studded with small, jet-black spots resembling bone corpuscles with a spidery outline. These pigmentary changes are typically perivascular and retinal veins (never aeries) have a sheath of pigment for pa of their course. These changes affect equatorial region initially sparing the posterior pole and periphery. Later in the course of disease whole retina is involved. Attenuated and thread like retinal aerioles and veins. Pale and waxy optic disc (consecutive optic atrophy). Thinning and atrophy of retinal pigment epithelium (RPE) in mid and far peripheral retina with relative sparing of RPE at macula. Electroretinogram (ERG) and paicularly the electro-oculogram (EOG) are markedly subnormal.

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