orthokeratology

[ awr-thoh-ker-uh-tol-uh-jee ]

noun

, Ophthalmology.

1. a technique for correcting refractive errors in vision by changing the shape of the cornea with the temporary use of progressively flatter hard contact lenses.

Word History and Origins

Origin of orthokeratology¹

First recorded in 1970–75; ortho- + kerato- + -logy

Example Sentences

A third approach, called orthokeratology, involves wearing contact lenses at night to change the shape of the cornea, make the edges of the eye more farsighted and perhaps slow the eye’s elongation.

From New York Times

Orthokeratology lenses—hard lenses prescribed for use at night to flatten the cornea to decrease nearsightedness—also can increase the risk of infection, Dr. Rapuano says.

From Wall Street Journal

Now optometrists like Dr. Liu are offering a treatment called orthokeratology — ortho-k, for short.

From New York Times