correcting lenses
71lens — lensless, adj. lenslike, adj. /lenz/, n., pl. lenses, v. n. 1. a piece of transparent substance, usually glass, having two opposite surfaces either both curved or one curved and one plane, used in an optical device in changing the convergence of… …
72noncorrecting — /non keuh rek ting/, adj. Ophthalm. (of eyeglass lenses) ground and polished without a corrective prescription. [NON + CORRECTING] * * * …
73orthokeratology — /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] * * * …
74particle accelerator — accelerator (def. 7). [1945 50] * * * Device that accelerates a beam of fast moving, electrically charged atoms (ions) or subatomic particles. Accelerators are used to study the structure of atomic nuclei (see atom) and the nature of subatomic… …
75technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
76correction — The act of reducing a fault; the elimination of an unfavorable quality. occlusal c. 1. the c. of malocclusion, by whatever means is employed; 2. elimination of disharmony of occlusal contacts. spontaneous c. of placenta previa the upward… …
77overcorrection — In behavior modification treatment programs, especially those involving mentally retarded individuals, overlearning the desired target behavior beyond the set criterion to assure that the behavior will continue to meet the established criterion… …
78refractionist — A person trained to measure the refraction of the eye and to determine the proper corrective lenses. * * * re·frac·tion·ist shə nəst n a person (as an optometrist) skilled in the practical application of the laws of refraction esp. to the… …
79Dimitrios Siganos — (Greek: Δημήτριος Σιγανός) is an ophthalmic surgeon. He is pioneer of refractive surgery (correcting myopia, astigmatism and presbyopia). He graduated from the Cairo University School of Medicine with the title MD Ph.D and Masters in… …
80Wollaston doublet — a microscopical lens consisting of a combination of two planoconvex lenses for correcting chromatic aberration …
