<prompt> Which one of the following is not a ocular emergencies?Angle closure glaucomaCentral retinal aerial occlusionCentral serous retinopathyRetinal detachment  <response>: Central serous retinopathy is a self limiting condition that undergoes spontaneous resolution in 80-90 of the cases. Visual acuity recovers normal or near normal with in 4-12 weeks. Its not an ocular emergency. Ref: A.K KHURANA 2005, Chapter 11, Disease of The Retina, In the book, Opthalmology, 3rd Edition, Newdelhi, Page 263 