The cause of a coloured &;Halo&; in narrow angle glaucoma is: (A) Increase IOP, (B) Corneal oedema, (C) Lenticular changes, (D) Lacrimation
Answer is B. Clinical Features of Glaucoma - Cupping of disc. - Raised intraocular pressure with coloured halos due to corneal oedema Ref khurana 6th edition pg 1234 - Visual field defect.