glossary

keratoconus

Definition keratoconus

keratoconus

keratoconus n. conical cornea: an abnormal condition of the eye in which the cornea, instead of having a regular curvature, comes to a rounded apex towards the centre. The "cone" tends to become sharper with age. It is usually due to a congenital weakness of the centre of the cornea, but may not produce symptoms until later childhood.