astigmatic spectacles

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• Astigmatism (eye) — DiseaseDisorder infobox Name = Astigmatism ICD10 = ICD10|H|52|2|h|49 ICD9 = ICD9|367.2 Astigmatism is an optical defect, whereby vision is blurred due to the inability of the optics of the eye to focus a point object into a sharp focused image on …   Wikipedia

• 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

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

• optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …   Universalium

• eyeglass — Synonyms and related words: Polaroid glasses, achromatic lens, astigmatic lens, bifocals, blinkers, burning glass, camera, cheaters, coated lens, colored glasses, concave lens, concavo convex lens, condenser, contact lens, convex lens, dark… …   Moby Thesaurus

• Eyeglass prescription — Using a phoropter to determine a prescription for eyeglasses An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist or ophthalmologist, that specifies the value of all parameters the prescriber has deemed… …   Wikipedia

• glass — Synonyms and related words: CM glass, CR glass, achromatic lens, adobe, aerological instrument, agate glass, alabaster, aneroid barometer, aneroidograph, astigmatic lens, barograph, barometer, barometrograph, beaker, bifocals, bijouterie,… …   Moby Thesaurus