- oxygen permeable lenses
- contact lenses which allow air to circulate
English contemporary dictionary. 2014.
oxygen permeable lenses
Look at other dictionaries:
contact lenses — lenses worn directly against the eye, separated from it only by a film of tear fluid. Corneal microlenses cover only the cornea, while haptic lenses cover some of the surrounding sclera as well. Contact lenses are used mainly in place of glasses… … Medical dictionary
contact lenses — lenses worn directly against the eye, separated from it only by a film of tear fluid. Corneal microlenses cover only the cornea, while haptic lenses cover some of the surrounding sclera as well. Contact lenses are used mainly in place of glasses … The new mediacal dictionary
Rigid gas permeable — lenses are rigid contact lenses made of oxygen permeable polymers. Initially developed in the late 1970s, and through the 1980s and 1990s, they were an improvement over prior hard lenses that restricted oxygen transmission to the eye. Rigid… … Wikipedia
gas-permeable — gas perˈmeable adjective (of hard contact lenses) allowing oxygen to penetrate through to the eye • • • Main Entry: ↑gas * * * ˌgas ˈpermeable 7 [gas permeable] adjective allowing gases to pass through • … Useful english dictionary
eye disease — Introduction any of the diseases or disorders that affect the human eye (eye, human). This article briefly describes the more common diseases of the eye and its associated structures, the methods used in examination and diagnosis, and the… … Universalium
Contact lens — Contacts redirects here. For the software application, see Address book. A pair of contact lenses, positioned with the concave side facing upward … Wikipedia
Orthokeratology — (also referred to as Ortho K, Overnight Vision Correction and Corneal Refractive Therapy), marketed under brand names like EyeDream , MiracLens , DreamLens , i GO OVC , GOV , Wake and See , CRT and Emerald , is the use of rigid gas permeable… … Wikipedia
contact lens — one of a pair of small plastic disks that are held in place over the cornea by surface tension and correct vision defects inconspicuously. Cf. hard lens, intraocular lens, soft lens. [1885 90] * * * Thin artificial lens worn on the surface of the … Universalium
LASIK — or Lasik ( laser assisted in situ keratomileusis ) is a type of refractive laser eye surgery performed by ophthalmologists for correcting myopia, hyperopia, and astigmatism. [ [http://www.intelihealth.com/IH/ihtIH/WSS/9339/32123.html LASIK. ]… … Wikipedia
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