<prompt> Painless sudden visual loss is seen in all except:CRAORetinal detachmentVitreous haemorrhageAngle closure glaucoma  <response>: Answer ie d ie Angle closure glaucoma Ref. Parson, 19e, p307, p148Angle closure glaucoma is well known to be painful condition. Acute cases of angle closure glaucoma cause severe headache with red eye.Causes of painless sudden loss of visionUnilateralBilateral Retinal detachment Bilateral occipital infarction Retinal vascular occlusion Atypical optic neuritis Vitreous Haemorrhage Diabetic retinopathy Retinal Haemorrhage Grade IV hypertensive retinopathy with macular star Exudative age related macular degeneration Toxic optic neuropathy Subluxation or dislocation of lens Posterior neuritis 