###Rationale: Acute angle-closure glaucoma is an ophthalmic emergency that causes severe visual loss without treatment. Symptoms include ocular pain, blurred vision, lacrimation, halos around lights, frontal headache, nausea, and vomiting. Causes of Sudden Painless Loss of Vision: Retinal detachment Vitreous haemorrhage Retinal vein occlusion Retinal aery occlusion Wet age related macular degeneration Anterior ischemic optic neuropathy Optic neuritis Cerebrovascular accident Papillitis Papilledema

###Answer: OPTION C IS CORRECT.
###Question: Painless loss of vision is seen in all, EXCEPT:
###Options:
A. Papilledema
B. Papillitis
C. Angle closure glaucoma
D. CRAO
