KCA is a degenerative disorder and characterized by an inflammatory corneal ectasia. We have base and apex of the cone. It is usually bilateral with its peak at puberty and male preponderance too manifests as frequent corneal curvature.

Changes are resulting by frequent changes in refraction progress of frequent corneal curvature. Changes can be managed by: Crossed corneal linkage Hybrid contact lens Customised contact lens Scleral contact lens Peggy contact lens Prosthetic contact lens Intrastromal corneal ring Lamellar keratoplasty