<prompt> In which of the following conditions Berlins edema isOpen angle glaucomaAfter cataract surgeryAfter concussional traumaDiabetic retinopathy  <response>: C i.e. After concussion trauma Blunt trauma to eye may produce Berlins 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. 