Lenses set in a frame that holds them in front of the eyes, used to correct errors of refraction or to protect the eyes. The parts of the s. are the lenses; the bridge between the lenses, resting on the nose; the rims or frames, encircling the lenses; the sides or temples that pass on either side of the head to the ears; the bows, the curved extremities of the temples; the shoulders, short bars attached to the rims or the lenses and jointed with the sides. SYN: eyeglasses, glasses (1). [L. specto, pp. -atus, to watch, observe]
- bifocal s. s. with bifocal lenses. See lens.
- clerical s. SYN: half-glass s..
- divers' s. strongly convex lenses for clear vision underwater.
- divided s. SYN: Franklin s..
- Franklin s. an early form of bifocal s. in which the lower half of the lens is for near vision, the upper half for distant vision. SYN: divided s..
- half-glass s. s., used for reading, in which the upper portion of the lenses are removed. SYN: clerical s., pantoscopic s., pulpit s..
- hemianopic s. s. with a prism or mirror to allow the person with homonymous hemianopia to see objects in the blind half field.
- lid crutch s. s. with little offsets of metal with smooth edges which engage above the upper eyelid and keep it raised above the pupil in cases of paralytic blepharoptosis. SYN: Masselon s..
- Masselon s. SYN: lid crutch s..
- orthoscopic s. convex lenses with base-in prisms for close work.
- pantoscopic s. SYN: half-glass s..
- photochromic s. s. with lenses that darken on exposure to ultraviolet light.
- protective s. s. which protect against ultraviolet or infrared rays or against mechanical injuries. SYN: safety s..
- pulpit s. SYN: half-glass s..
- safety s. SYN: protective s..
- stenopeic s., stenopaic s. 1. opaque disks with narrow slits in the center allowing only a minimum amount of light to enter; used as a protection against snow blindness; 2. s. having opaque disks with multiple perforations used to aid vision in incipient cataract and in discrete opacities of the cornea; occasionally used as a substitute for corrective lenses or sunglasses.
- telescopic s. magnifying s. obtained by using a convex objective lens and a concave eyepiece separated by the difference in their focal lengths.

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spec·ta·cles 'spek-ti-kəlz n pl GLASS (2b)

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spec·ta·cles (spekґtə-kəlz) glasses.

Medical dictionary. 2011.


Look at other dictionaries:

  • spectacles — (n.) glass lenses to help a person s sight, early 15c., from plural of SPECTACLE (Cf. spectacle) …   Etymology dictionary

  • spectacles — [n] eyeglasses bifocals, blinkers*, contact lenses, contacts, glasses, goggles, lorgnette, monocle, pair of glasses, pince nez, reading glasses, shades*, specs*, sunglasses, trifocals; concept 446 …   New thesaurus

  • spectacles — ► PLURAL NOUN Brit. ▪ a pair of glasses …   English terms dictionary

  • spectacles — noun (formal, esp. BrE) ADJECTIVE ▪ heavy ▪ gold rimmed, horn rimmed, rimless, steel rimmed, wire framed, wire rimmed ▪ thick …   Collocations dictionary

  • spectacles — n. (now esp. BE) a pair of spectacles * * * [ spektək(ə)lz] (now esp. BE) a pair of spectacles …   Combinatory dictionary

  • spectacles — noun A pair of lenses set in a frame worn on the nose and ears in order to correct deficiencies in eyesight or to ornament the face. Syn: eyeglasses, glasses, pair of eyeglasses, pair of glasses, pair of specs, pair of spectacles, specs …   Wiktionary

  • spectacles — Synonyms and related words: Polaroid glasses, bifocals, blinkers, cheaters, colored glasses, contact lens, dark glasses, divided spectacles, eyeglass, eyeglasses, glasses, goggles, granny glasses, harlequin glasses, horn rimmed glasses, lorgnette …   Moby Thesaurus

  • spectacles — akiniai statusas T sritis radioelektronika atitikmenys: angl. spectacles vok. Brille, f rus. очки pranc. lunettes, f …   Radioelektronikos terminų žodynas

  • spectacles — n.pl. (also pair of spectacles sing.) a pair of lenses in a frame resting on the nose and ears, used to correct defective eyesight or protect the eyes …   Useful english dictionary

  • spectacles — noun see glass I …   New Collegiate Dictionary

  • Spectacles — Spectacle Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Spectacle de théatre de rue …   Wikipédia en Français

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