<prompt> Commotio retinae affects which pa of retina-Posterior polePeripheral retinaInferior-nasal paSuperior-nasal pa  <response>: Berlins oedema, also called commotio retinae, occurs in blunt trauma to eye. It manifests as milky white cloudiness involving a considerable area of the posterior pole with a cherry-red spot in the foveal region. It May disappear after some days or may be followed by pigmentary changes. Ref: Khurana 7the p.448 