<prompt> Loss of vision may occur due to occlusion of -Optic arterySuperior Ophthalmic arteryCentral Retinal arteryExternal carotid artery  <response>: Ans. is c i.e, Central Retinal artery Occlusion usually embolic, but can be thrombotic, inflammatory or traumatic of the bloodflow in the Central retinal artery leading painless loss of vision. The main artery supplying the globe is the ophthalmic artery. The portion of the ophthalmic artery that enters the eye at the optic nerve is called the central retinal artery CRAO. This artery then divides into a superior and an inferior branch retinal artery that each then further subdivides to supply retinal vessels to the retina. 