| antibiotic eye drops | <pharmacology> A medication that is pH balanced to allow placement into the eye for the purpose of killing bacteria. Examples include: Bleph-10, Chloromycetin, Cortisporin-Ophthalmic, Gantrisin, Genoptic, Gentacidin, Garamycin, Gantrisin, Ilotycin, Sodium Sulamyd and Sulphair. (27 Sep 1997) |
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| burning drops sign | <clinical sign> In certain cases of perforated gastric ulcer, a sensation as of drops of hot liquid falling into the abdominal cavity or as of a stream of intensely hot liquid being poured into the cavity. (05 Mar 2000) |
| stomach drops | A stomachic tonic, usually tincture of gentian, alone or with other stomachics. (05 Mar 2000) |
| nose drops | A liquid preparation intended for intranasal administration with a medicine dropper. Most frequently used for decongestion of the nasal passages but can be used for any other appropriate indication. (05 Mar 2000) |
| drops | A popular term for a medicine taken in doses measured by drops's, usually a tincture, or applied by dropping, as an eyewash. (05 Mar 2000) |
| eye drops | See: eyewash, ophthalmic solutions. (05 Mar 2000) |
| knock-out drops | A popular name for chloral alcoholate given with criminal intent to produce unconsciousness rapidly; it is formed by adding chloral hydrate to beer or some stronger alcoholic liquor. (05 Mar 2000) |
| achromatic lens | A compound lens made of two or more lens's having different indices of refraction, so correlated as to minimise chromatic aberration. (05 Mar 2000) |
| acoustic lens | In ultrasonography, a lens used to focus or diverge a sound beam; may be simulated by electronic manipulation of signals. (05 Mar 2000) |
| anterior pole of lens | The central point on the anterior surface of the lens of the eye. Synonym: polus anterior lentis. (05 Mar 2000) |
| anterior surface of lens | The anterior surface of the lens of the eye. Synonym: facies anterior lentis. (05 Mar 2000) |
| aplanatic lens | A lens designed to correct spherical aberration and coma (q.v.). Synonym: periscopic meniscus. (05 Mar 2000) |
| apochromatic lens | A compound lens designed to correct both spherical and chromatic aberrations. (05 Mar 2000) |
| asphenc lens | <physics> A lens made aplanatic by grinding the outer zones to a greater radius than the inner zones. Aplanatic condensers can be made in this way. A simple aspheric lens is widely used as a lamp condenser because of its efficiency in converging light rays to one focal plane. (05 Aug 1998) |
| aspheric lens | A lens with a paraboloidal surface that eliminates spherical aberration. (05 Mar 2000) |