correcting lenses
81trial frame — a frame specially devised to permit easy insertion of different lenses used in correcting refractive errors of vision …
82correction — cor|rec|tion [ kə rekʃən ] noun * ▸ 1 change that corrects ▸ 2 change that solves something ▸ 3 when investments fall ▸ 4 in calculations ▸ 5 punishment 1. ) count a change that makes something correct or accurate: spelling corrections make a… …
83correction */ — UK [kəˈrekʃ(ə)n] / US noun Word forms correction : singular correction plural corrections 1) [countable] a change that makes something correct or accurate spelling corrections make a correction: I ve made a few small corrections in your essay.… …
84lens — /lɛnz / (say lenz) noun (plural lenses) 1. a piece of transparent substance, usually glass, having two (or two main) opposite surfaces, either both curved or one curved and one plane, used for changing the convergence of light rays, as in… …
85eyeglasses — noun optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision • Syn: ↑spectacles, ↑specs, ↑glasses • Usage Domain: ↑plural, ↑plural form • Hypernyms: ↑ …
86glasses — noun optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision (Freq. 4) • Syn: ↑spectacles, ↑specs, ↑eyeglasses • Usage Domain: ↑plural, ↑plural form …
87hard lens — a contact lens of rigid plastic or silicon, exerting light pressure on the cornea of the eye, used for correcting various vision problems including astigmatism. Cf. soft lens. * * * hard lens, a contact lens made firm plastic that adheres to the… …
88noncorrecting — /non keuh rek ting/, adj. Ophthalm. (of eyeglass lenses) ground and polished without a corrective prescription. [NON + CORRECTING] …
89orthokeratology — /awr thoh ker euh tol euh jee/, n. Ophthalm. a technique for correcting refractive errors in vision by changing the shape of the cornea with the temporary use of progressively flatter hard contact lenses. [1970 75; ORTHO + KERATO + LOGY] …
90as´tig|mat´i|cal|ly — as|tig|mat|ic «AS tihg MAT ihk», adjective. 1. having astigmatism. 2. having to do with or characterized by astigmatism: »Figurative. the astigmatic views of a bigot. 3. correcting astigmatism: »astigmatic lenses. –as´tig|mat´i|cal|ly, adverb …
