<prompt> Diagnose the ocular pathology.Primary optic atrophyPrimary open angle glaucomaPapilledemaCentral retinal artery occlusion  <response>: Ans. c PapilledemaOption a - should be a pale - white disc.Option b - POAG should present with loss of nasal neuro- retinal rim and Cupping large cup, cd ratio 0.5 along with vascular changes.Option d - CRAO - no occlusion can be seen, all arteries thinner cross-section, red colour and veins thicker cross section, darker red color are seen to be patientOption c - Papilledema - earliest sign is blurring of the disc margins, which is visible in the image. 