corrective lens

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• Corrective lens — A bifocal corrective eyeglass lens A pair of contact le …   Wikipedia

• Lens — can refer to: NOTOC In optics*Lens (optics), an optical element which converges or diverges light **Lens (anatomy), a part of the eye **Corrective lens for correction of human vision ***Contact lens, placed on the cornea of the eye **Photographic …   Wikipedia

• Lens (optics) — For other uses, see Lens. A lens. Lenses can be used to focus light. A lens is an optical device with perfect or approximate axial symmetry which tra …   Wikipedia

• Lens clock — A lens clock is a mechanical dial caliper that is used to measure dioptric power of a lens. It is a specialized version of a spherometer. A lens clock measures the curvature of a surface, but gives the result in diopters, assuming the lens is… …   Wikipedia

• lens — 01. The [lens] fell out of my new sunglasses, so I got my money back. 02. Nowadays, many people with poor eyesight can have their vision restored through corrective [lens] surgery using a laser beam. 03. I scratched the [lens] of my sunglasses… …   Grammatical examples in English

• lens — n. 1) to grind a lens 2) a concave; convex; crystalline; telephoto. telescopic lens 3) contact; corrective lenses * * * [lenz] convex corrective lenses crystalline telephoto telescopic lens a concave contact to grind a lens …   Combinatory dictionary

• 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

• Intraocular lens — An intraocular lens (IOL) is an implanted lens in the eye, usually replacing the existing crystalline lens because it has been clouded over by a cataract, or as a form of refractive surgery to change the eye s optical power. It usually consists… …   Wikipedia

• Toric lens — In optics, a toric lens is a type of lens whose surface is a combination of a sphere and a cylinder. One surface of the lens is spherical, the other toroidal. [cite book|title=A Textbook of Ophthalmology|author=E.… …   Wikipedia

• Lenticular lens — A series of cylindrical lenses molded in a plastic substrate A lenticular lens is an array of magnifying lenses, designed so that when viewed from slightly different angles, different images are magnified.[1] The most common example is the lenses …   Wikipedia

• Progressive lens — View through a progressive lens at some distance. In nor­mal use, a much smaller section of the glass is used, so that the dis­tortion is much smaller. Progressive spectacle lenses, also called progressive addition lenses (PAL), progressive power …   Wikipedia