Direct ophthalmoscopy may accurately distinguish causes of acute, painless visual loss into those requiring immediate treatment or referral (such as central retinal artery occlusion) from those which ...
Based on: Text-Book of Ophthalmoscopy. By Edward G. Loring, M.D., edited by Francis B. Loring, M.D. Part II. Diseases of the Retina, Optic Nerve, and Choroid, their ...