Keratoconus (from
Greek: kerato- horn, cornea; and konos cone), is 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 gradual
curve. Keratoconus can cause substantial distortion of
vision, with multiple images, streaking and
sensitivity to light all often reported by the patient. Keratoconus is the most common
dystrophy of the cornea, affecting around one person in a thousand, and it seems to occur in populations throughout the world, although some ethnic groups experience a greater prevalence than others. It is typically diagnosed in the patient's
adolescent years and attains its most severe state in the twenties and thirties.
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Cone-shaped cornea with the apex of the cone being forward. Also called conical cornea.
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