- toric lens
- a meniscus lens with a cylindrical curve ground on the outer (convex) surface.
Medical dictionary. 2011.
toric lens
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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
toric lens — noun : a simple lens having for one of its surfaces a segment of an equilateral zone of a torus and consequently having different refracting power in different meridians * * * toric lens, an optical lens with a surface forming a part of a… … Useful english dictionary
toric — adjective Date: 1890 of, relating to, or shaped like a torus or segment of a torus < a toric lens > … New Collegiate Dictionary
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
toric — /tawr ik, tor /, adj. 1. noting or pertaining to a lens with a surface forming a portion of a torus, used for eyeglasses and contact lenses that correct astigmatism. 2. a toric contact lens. [1895 1900; TOR(US) + IC] * * * … Universalium
toric — tor•ic [[t]ˈtɔr ɪk, ˈtɒr [/t]] adj. 1) oph of or designating a lens with a surface forming a portion of a torus, used for eyeglasses and contact lenses that correct astigmatism 2) oph a toric contact lens • Etymology: 1895–1900 … 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
toric — Relating to, or having the curvature of, a torus. * * * to·ric tōr ik, tȯr adj of, relating to, or shaped like a torus or segment of a torus specif being a simple lens having for one of its surfaces a segment of an equilateral zone of a torus… … Medical dictionary
toric — [ tɒrɪk, tɔ:rɪk] adjective 1》 Geometry having the form of a torus or part of a torus. 2》 (of a contact lens) having two different curves instead of one, used to correct both astigmatism and short or long sightedness … English new terms dictionary
toric — /ˈtɔrɪk/ (say tawrik) adjective 1. denoting or relating to a lens with a surface forming a portion of a torus, used for spectacles. 2. Geometry of or relating to a torus. {tor(us) + ic} …
