orthokeratologyn.
/ˌɔːθə(ʊ)kɛrəˈtɒlədʒi/, U.S. /ˈˌɔrθoʊˌkɛrəˈtɑlədʒi/ Ophthalmology.
The use of specially designed contact lenses to alter (usually temporarily) the curvature of the cornea and reduce myopia.
ΚΠ
1965 S. L. Ziff in Southern Jrnl. Optometry Mar. 9/2 (heading) Orthokeratology in relationship to existing corneal curvature.
1980 Ophthalmology 87 729 The responses to orthokeratology are unpredictable and uncontrollable. The quality of uncorrected vision is worse than with contacts or glasses, and the chances of attaining 6/12 (20/40) uncorrected vision are small.
1994 Singapore Med. Jrnl. 35 367 Hard contact lenses and more recently, rigid gas permeable lenses, have been studied both to arrest the progression of myopia in the young and reduce existing myopia (by orthokeratology) in the Caucasian population.
2001 Calgary (Alberta) Herald (Nexis) 20 Sept. s11 This procedure is known as advanced orthokeratology, and the super-gas permeable hard lenses are the last thing on in the evening and the first thing off in the morning—completely the opposite of the daily eyeglass routine.
This is a new entry (OED Third Edition, September 2004; most recently modified version published online March 2022).
<
n.1965