Ophthalmology One millimeter increase in the radius of curvature of cornea leads to hypermetropia of: A 3 dioptres B 4 dioptres C 5 dioptres D 6 dioptres 💡 Explanation One millimeter increase in the radius of curvature of cornea leads to hypermetropia of: ✓ Correct Answer: D. 6 dioptres