- bifocal contact lens
- 双焦点接触镜
Medical Chinese dictionary (湘雅医学词典). 2013.
bifocal contact lens
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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
bifocal lens — a lens with two principal focal lengths: the upper part of the lens gives a sharp image of distant objects and the lower part gives a sharp image of near objects, as when reading. Examples are bifocal spectacles, bifocal contact lenses, and… … Medical dictionary
bifocal lens — a lens with two principal focal lengths: the upper part of the lens gives a sharp image of distant objects and the lower part gives a sharp image of near objects, as when reading. Examples are bifocal spectacles, bifocal contact lenses, and… … The new mediacal dictionary
bifocal — /buy foh keuhl, buy foh /, adj. 1. Chiefly Optics. having two foci. 2. (of an eyeglass or contact lens) having two portions, one for near and one for far vision. n. 3. bifocals, bifocal eyeglasses or contact lenses. [1885 90, Amer.; BI 1 + FOCAL] … Universalium
bifocal — bi•fo•cal [[t]baɪˈfoʊ kəl, ˈbaɪˌfoʊ [/t]] adj. 1) opt having two foci 2) oph (of an eyeglass or contact lens) having two portions, one for near and one for far vision 3) bifocals, bifocal eyeglasses • Etymology: 1885–90, amer … From formal English to slang
Lens — The transparent structure inside the eye that focuses light rays onto the retina (the nerve layer that lines the back of the eye, senses light and creates impulses that go through the optic nerve to the brain). The lens was named after the lentil … Medical dictionary
lens — n. 1) (in anatomy) the transparent crystalline structure situated behind the pupil of the eye and enclosed in a thin transparent capsule. It helps to refract incoming light and focus it onto the retina. See also: accommodation 2) (in optics) a… … The new mediacal dictionary
Corrective lens — A bifocal corrective eyeglass lens A pair of contact le … Wikipedia
Kontaktlinse — Kontaktlinsen (auch Haftlinsen, Haftschalen oder Haftgläser; nicht zu verwechseln mit Kontaktgläsern) sind optische Hilfsmittel, gehören zu den Sehhilfen und stellen als solche eine Alternative zur Brille dar. Kontaktlinsen liegen nicht direkt… … Deutsch Wikipedia
Contactlinse — Formstabile Kontaktlinse Weiche Kontaktlinsen Kontaktlinsen, auch Haftschalen genannt, gehören wie die Brille zu den Sehhilfen. Kontaktlinsen liegen dabei direkt auf der … Deutsch Wikipedia
Contactlinsen — Formstabile Kontaktlinse Weiche Kontaktlinsen Kontaktlinsen, auch Haftschalen genannt, gehören wie die Brille zu den Sehhilfen. Kontaktlinsen liegen dabei direkt auf der … Deutsch Wikipedia
