1) Astigmatism 2) Astigmia 
Keratoconus (from Greek: kerato- horn, cornea; and konos cone) is a degenerative disorder of the eye in which structural changes within the cornea cause it to thin and change to a more conical shape than the more normal gradual curve. Keratoconus can cause substantial distortion of vision, with multiple images, streaking and sensitivity to light a...
(from the article `eye disease`) There are numerous types of corneal degeneration, many of which are rare and some of which are familial. The most common type is keratoconus, a ...
Cone-shaped cornea with the apex of the cone being forward. Also called conical cornea. ... (12 Dec 1998) ... 
(ker″ә-to-ko´nәs) conical protrusion of the central part of the cornea, resulting in an irregular astigmatism.
(kehr-uh-toh-KOH-nus) Degenerative corneal disease affecting vision Characterized by generalized thinning and cone-shaped protrusion of the central cornea, usually in both eyes Hereditary
Type: Term Pronunciation: ker′ă-tō-kō′nŭs Definitions: 1. A conic protrusion of the cornea caused by thinning of the stroma; usually bilateral. Synonyms: conic cornea
Our Keratoconus Main Article provides a comprehensive look at the who, what, when and how of Keratoconus Keratoconus: Cone-shaped cornea with the apex of the cone being forward. Also called conical cornea.
a mis-shaped cornea which cannot focus clearly. Sometimes a contact lens will sometimes help. Keratometry
[n] - abnormal cone-shaped protrusion of the cornea of the eye
a degenerative condition characterized by conical protrusion of the cornea and irregular astigmatism.