| GEMSS | glaucoma-lens ecopia-microspherophakia-stiffness-shortness syndrome |
|---|---|
| ICL | idiopathic CD4 T-cell lymphocytopenia; iris-clip lens; isocitrate lyase |
| IOL | induction of labor; intraocular lens |
| PCL | pacing cycle length; persistent corpus luteum; plasma cell leukemia; posterior chamber lens; posteri... |
| Phaco | lens phacoemulsification [ophthalmic cataract surgery] |
| open-label trial | A study in which both researchers and participants know what drug a person is taking and at what dose. (09 Oct 1997) |
|---|---|
| trial | 1. The act of trying or testing in any manner. Specifically: Any effort or exertion of strength for the purpose of ascertaining what can be done or effected. "[I] defy thee to the trial of mortal fight." (Milton) The act of testing by experience; proof; test. "Repeated trials of the issues and events of actions." (Bp. Wilkins) Examination by a test; experiment, as in chemistry, metallurgy, etc. 2. The state of being tried or tempted; exposure to suffering that tests strength, patience, faith, or the like; affliction or temptation that exercises and proves the graces or virtues of men. "Others had trial of cruel mockings and scourgings." (Heb. Xi. 36) 3. That which tries or afflicts; that which harasses; that which tries the character or principles; that which tempts to evil; as, his child's conduct was a sore trial. "Every station is exposed to some trials." (Rogers) 4. The formal examination of the matter in issue in a cause before a competent tribunal; the mode of determining a question of fact in a court of law; the examination, in legal form, of the facts in issue in a cause pending before a competent tribunal, for the purpose of determining such issue. Synonym: Test, attempt, endeavor, effort, experiment, proof, essay. See Test, and Attempt. Origin: From Try. Source: Websters Dictionary (01 Mar 1998) |
| trial and error | The apparently random, haphazard, hit-or-miss exploratory activity which often precedes the acquisition of new information or adjustments; it may be overt, as in a rat running in a maze, or covert (vicarious), as when one thinks of various ways of coping with a situation. (05 Mar 2000) |
| trial base | <cell biology> A hypothetical cell adhesion molecule possibly involved in sponge cell adhesion, existence unproven. (18 Nov 1997) |
| trial case | In refraction, a box containing lenses for testing. (05 Mar 2000) |
| trial denture | A setup of artificial teeth so fabricated that it may be placed in the patient's mouth to verify esthetics, for the making of records, or for any other operation deemed necessary before final completion of the denture. Synonym: wax model denture. (05 Mar 2000) |
| trial frame | A type of spectacle frame with variable adjustments, for holding trial lenses during refraction. (05 Mar 2000) |
| trial of labour | Allowing a woman to be in labour long enough to determine if vaginal birth may be anticipated. (12 Dec 1998) |
| 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) |