<prompt> Painless sudden loss of the vision occurs in all EXCEPTAcute angle closure glaucomaCRAOVitreous haemorragePseudopapillitis  <response>: Acute angle closure glaucoma 229- Khurana 4thAcute primary angle closure glaucomaSymptomsSigns Pain- sudden onset severe pain in the eye radiates to the branches of 5th nerve Rapidly progressive impairment of vision i.e., painful Nausea vomiting, prostrationsConjunctiva - Chemosed , congestedCornea - Oedematous, congested Anterior chamber- shallow Angle of AC is completely closed Iris - discoloured Pupil - semidilated, vertically oval and fixed Optic disc is oedematous and hyperaemicCauses of painless loss of vision - obstruction of CRA, CRV, cranial arteritis , Ischemic papillitis, Migraine, Retro bulbar neuritis vitreous haemorrhage, Retinal detachment, Macular holes, cyst or haemorrhage, Hysterical blindness 