All are ocular emergencies except -: (A) Angle closure glaucoma, (B) Central serous retinopathy, (C) Retinal detachment, (D) Central retinal arterial occlusion
Answer is B. Central serous retinopathy (CSR) is typically a self limiting disease and undergoes spontaneous resolution in 80 to 90% of cases.

Ocular emergencies 

Closed - angle glaucoma                                                   
Retinal detachment                          
Foreign body     
Orbital fractures          
Corneal abrasions, lacerations, ulcers   
Ruptured globe        
CRAO   
Chemical burns
Retrobulbar hematoma