Ophthalmology 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 💡 Explanation Keratoconus is defined as: March 2013 (h) ✓ Correct Answer: C. Cornea thins near the centre & bulges forwards