A 75-year old patient present with deterioration of vision. On examination the pupillary reflex is observed to be sluggish and the intraocular pressure is normal. Optic disc evaluation shows a large and deep cup and primarily shows paracentral scotomas. The most likely diagnosis is:: (A) Primary narrow angle glaucoma, (B) Normal tension glaucoma, (C) Neovascular glaucoma, (D) Absolute glaucoma
Answer is B. Ans. Normal tension glaucoma