<prompt> In which of the following conditions Berlin;s edema isOpen angle glaucomaAfter cataract surgeryAfter concussional traumaDiabetic retinopathy  <response>: Blunt trauma to eye may produce Berlin;s edema or commotio retinae Q which is a cloudy swelling characterized by a grey appaerance, most frequently in the temporal region. It may also manifest as cherry red spot in the foveal region. Ref: AK khurana 7th ed. 