| BSCVA | Best spectacle corrected visual acuity |
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| spectacle | 1. Something exhibited to view; usually, something presented to view as extraordinary, or as unusual and worthy of special notice; a remarkable or noteworthy sight; a show; a pageant; a gazingstock. "O, piteous spectacle? O, bloody times!" (Shak) 2. A spy-glass; a looking-glass. "Poverty a spectacle is, as thinketh me, Through which he may his very friends see." (Chaucer) 3. An optical instrument consisting of two lenses set in a light frame, and worn to assist sight, to obviate some defect in the organs of vision, or to shield the eyes from bright light. 4. An aid to the intellectual sight. "Shakespeare . . . Needed not the spectacles of books to read nature." (Dryden) Synonym: Show, sight, exhibition, representation, pageant. Origin: F, fr. L. Spectaculum, fr. Spectare to look at, to behold, v. Intens. Fr. Specere. See Spy. Source: Websters Dictionary (01 Mar 1998) |
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| spectacle eyes | A condition in rats caused by pantothenic acid deficiency, and possibly lack of inositol as well, in which a hairless ring of inflamed skin surrounds the eye's. (05 Mar 2000) |
| spectacle plane | The plane at which spectacles are worn. (05 Mar 2000) |
| contact lenses | Curved shells of glass or plastic applied directly over the globe or cornea to correct refractive errors. (12 Dec 1998) |
| contact lenses, extended-wear | Hydrophilic contact lenses worn for an extended period or permanently. (12 Dec 1998) |
| contact lenses, hydrophilic | Soft, supple contact lenses made of plastic polymers which interact readily with water molecules. Many types are available, including continuous and extended-wear versions, which are gas-permeable and easily sterilised. (12 Dec 1998) |
| trial lenses | A series of cylindrical and spherical lens's used in testing vision. (05 Mar 2000) |
| lenses | Pieces of glass or other transparent materials used for magnification or increased visual acuity. (12 Dec 1998) |
| lenses, intraocular | Artificial implanted lenses. (12 Dec 1998) |
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