| OPH, Oph | ophthalmology; ophthalmoscopy, ophthalmoscope |
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| DAT | delayed-action tablet; dementia Alzheimer's type; dental aptitude test; diacetylthiamine; diet as to... |
| DC | daily census; data communication; data conversion; decrease; deep compartment; Dental Corps; deoxych... |
| DASD | Direct Access Storage Device = RAM |
| DC | 1) Direct Current 2) Diffusion Capacity |
| DAT | DIRECT AGGLUTINATION TEST |
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| D | Direct |
| DAT | Direct Antiglobulin Test |
| DC | Direct Current |
| DEFT | Direct Epifluorescent Filter Technique |
| direct ophthalmoscopy | Ophthalmoscopy performed with a direct ophthalmoscope. (05 Mar 2000) |
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| indirect ophthalmoscopy | Ophthalmoscopy performed with an indirect ophthalmoscope. (05 Mar 2000) |
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| ophthalmoscopy | <procedure> Observation of the optic disc, retina and blood vessels. May be examined by direct or indirect ophthalmoscopy. In direct ophthalmoscopy the examiner uses an ophthalmoscope the size of a flashlight to shine a beam of light into your eye. In indirect ophthalmoscopy a head lamp device is used and a much brighter light. Visualisation of the retina is important in conditions such as glaucoma, diabetes, hypertension and conditions that cause increased intracranial pressure. (27 Sep 1997) |
| ophthalmoscopy with reflected light | Examination of that part of the fundus adjacent to an area illuminated by a sharply focused light. (05 Mar 2000) |
| non-direct transmission | <epidemiology> A mode of transmission that differs in some mysterious way from indirect transmission. (05 Dec 1998) |
| direct | 1. Straight, in a straight line. 2. Performed immediately and without the intervention of subsidiary means. Origin: L. Directus (18 Nov 1997) |
| direct acrylic restoration | A direct resin restoration of autopolymerizing acrylic. (05 Mar 2000) |
| direct agglutination | A general term for techniques which use the agglutination (macroscopic clumping) of particulate reagents as an indicator of the presence of an antigen-antibody reaction. Examples (haemagglutination, latex agglutination and coagglutination) follow. (05 Mar 2000) |
| direct B-cell | Lymphocytes responding to a small range of antigens by antibody production without any requirement for T-cells. The antigens include flagellin and pokeweed mitogen. (18 Nov 1997) |
| direct bilirubin | Conjugated bilirubin = Direct bilirubin. Bilirubin that has been chemically attached to a glucuronide in the liver. The bilirubin that is excreted into the bile by the liver and stored in the gallbladder or transferred to the duodenum. Normal direct bilirubin is 0 to 0.3 mg/dl. Greater than normal values can be seen in bile duct obstruction, cirrhosis, Crigler-Najjar syndrome, Dubin-Johnson syndrome and hepatitis. (27 Sep 1997) |
| direct bone impression | An impression of denuded bone, used in the construction of subperiosteal denture implants. (05 Mar 2000) |
| direct composite resin restoration | A direct restoration made by inserting a plastic mix of auto or light-polymerised resins in a cavity prepared in a tooth. Synonym: direct composite resin restoration. (05 Mar 2000) |
| direct contamination | <dentistry> Direct contact with impurities or germs. (for example by a patient sneezing on the assistant.) (08 Jan 1998) |
| direct Coombs' test | A test for detecting sensitised erythrocytes in erythroblastosis foetalis and in cases of acquired immune haemolytic anaemia: the patient's erythrocytes are washed with saline to remove serum and unattached antibody protein, then incubated with Coombs' anti-human globulin (usually serum from a rabbit or goat previously immunised with human globulin); after incubation, the system is centrifuged and examined for agglutination, which indicates the presence of so-called incomplete or univalent antibodies on the surface of the erythrocytes. (05 Mar 2000) |
| direct current | (DC) Electric current which travels continuously in the same direction over a sustained period of time, contrast with AC (Alternating Current) which oscillates as a function of time. (09 Oct 1997) |
| direct diuretic | A diuretic whose primary effect is on renal tubular function. (05 Mar 2000) |
| direct ophthalmoscopy |
direct, close-range ophthalmoscopic observation of the fundus; the image is virtual, erect, and magnified.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| direct ophthalmoscopy |
Direct ophthalmoscopy is used more frequently by practitioners than indirect ophthalmoscopy. However, both techniques have advantages that complement each other when used together. The method is termed "direct" because a condensing lens is not interpositioned between the ophthalmoscope and the patient's eye. The examiner has a direct optical image of the patient's eye. The fundus image is real, upright and approximately about 17 to 19 times magnified in dogs and cats. ...
Ãâó: www.malamutehealth.org/eye/exam.htm
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