A young man with blurring of vision in right eye, followed by left eye after 3 months, Showing disc hyperemia, edema, circumpapillary telangiectasia with normal pupillary response with centrocecal scotoma on perimetery, the cause is: (A) Optic atrophy, (B) Optic neuritis, (C) Toxic optic neuropathy, (D) Leber's optic neuropathy
Answer is D. Disc hyperemia, periperillary telangiectasia clearly s/o leber's optic neuropathy.