Keratoconus is defined as: March 2013 (h): (A) Degeneration of conjunctiva, (B) Cornea undergoes necrosis due to vitamin A deficiency, (C) Cornea thins near the centre & bulges forwards, (D) Recurrent corneal ulcerations of cornea
Answer is C. Ans. C i.e. Cornea thins near the centre & bulges forwards