noun.
A degenerative non-inflammatory disorder of the eye in which structural changes within the cornea cause it to thin and change to a more conical shape than its normal even curve.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
abnormal cone-shaped protrusion of the cornea of the eye; can be treated by epikeratophakia
Word Usage
"A few years ago, Holcomb's vision had deteriorated to 20/500 from a degenerative eye condition called keratoconus, which makes the corneas bulge outward."