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What is Berlin's edema is due to and explain in detail?
(Refer: AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 431)Berlin's edema (commotio retinae) is a common condition caused by blunt injury to the eye. It is characterized by a decreased vision in the injured eye a few hours after the injury. Under examination, the retina appears opaque and white in color in the periphery but the blood vessels are normally seen. Cherry-red' spot in the foveal region may be seen