| Ascher's aqueous influx phenomenon | The filling of the aqueous vein, which normally carries blood and aqueous, with aqueous, when the junction of the aqueous vein and the recipient vein is partially occluded. Synonym: Ascher's aqueous influx phenomenon. (05 Mar 2000) |
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| aqueous influx phenomenon | The filling of the aqueous vein, which normally carries blood and aqueous, with aqueous, when the junction of the aqueous vein and the recipient vein is partially occluded. Synonym: Ascher's aqueous influx phenomenon. (05 Mar 2000) |
| Ascher, Karl | <person> U.S. Ophthalmologist, 1887-1971. See: Ascher's aqueous influx phenomenon, Ascher's syndrome. (05 Mar 2000) |
| Ascher's syndrome | <syndrome> A condition in which a congenital double lip is associated with blepharochalasis and nontoxic thyroid gland enlargement. (05 Mar 2000) |
| aqueous | <chemistry> Watery, prepared with water. (18 Nov 1997) |
| aqueous chambers | The combined anterior and posterior chamber's of the eye containing the aqueous humor. See: anterior chamber of eye, posterior chamber of eye. See: anterior segment. (05 Mar 2000) |
| aqueous flare | Tyndall phenomenon observed in the fluid of the anterior chamber of the eye. (05 Mar 2000) |
| aqueous humor | <physiology> A transparent liquid contained in the anterior and posterior chambers of the eye, produced by the ciliary process it passes to the venous system via the canal of Schlemm. (27 Sep 1997) |
| aqueous phase | The water portion of a system consisting of two liquid phase's, one mainly water, the other a liquid immiscible with water (e.g., benzene, ether). (05 Mar 2000) |
| aqueous solution | <chemistry> A solution in which water is the dissolving medium or solvent. (09 Jan 1998) |
| aqueous vaccine | A vaccine having a liquid vehicle (e.g., physiological salt solution) as distinguished from an emulsion. (05 Mar 2000) |
| aqueous vein | <anatomy, vein> A tributary of the anterior ciliary vein which receives aqueous humor from the sinus venosus sclerae. (05 Mar 2000) |
| blood-aqueous barrier | The anatomical mechanism that prevents exchange of materials between the chambers of the eye and the blood. The tight junctions of the nonpigmented epithelium of the ciliary body, the junctions of the iris tissues, and iris blood vessels constitute the blood-aqueous barrier. Lipid-soluble substances such as oxygen and carbon dioxide penetrate the barrier at a high rate. Sodium, larger water-soluble ions, proteins, and other large and medium-sized molecules are restricted. (12 Dec 1998) |
| adhesion phenomenon | A phenomenon manifested by the adherence of antigen-antibody-complement complex to "indicator cells" (microorganisms, platelets, leukocytes, or erythrocytes), the reaction being sensitive and specific for the antigen and antibody in the complex. Synonym: erythrocyte adherence phenomenon, immune adherence phenomenon, red cell adherence phenomenon. (05 Mar 2000) |
| AFORMED phenomenon | As induced pulsus alternans progresses, a state in which alternating heart depolarisations fail to eject any blood, thus allowing longer diastolic filling; the subsequent beat is then able to produce a significant ejection; at high rates the cardiac minute volume and blood pressure may appear normal. Origin: Alternating, failure of response, mechanical, to electrical depolarisation (05 Mar 2000) |