| TAS | tetanus antitoxin serum; therapeutic activities specialist; thoracoabdominal syndrome; transcription... |
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| TBI | thyroid-binding index; thyroxine-binding index; tooth-brushing instruction; total-body irradiation; ... |
| TECV | traumatic epiphyseal coxa vara |
| TON | traumatic optic neuropathy |
| tr | tincture; trace; traction; transaldolase; trauma, traumatic; tremor; triradial |
| traumatic pneumonia | Inflammation of the lungs following a severe blow on or compression of the chest, or following a wound of the lung itself. Synonym: traumatic pneumonia. (05 Mar 2000) |
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| traumatic progressive encephalopathy | A chronic progressive brain damage resulting from multiple brain injuries, e.g., dementia pugilistica. (05 Mar 2000) |
| traumatic psychosis | A psychosis resulting from physical injury or emotional shock. Compare: posttraumatic psychosis. (05 Mar 2000) |
| traumatic reticuloperitonitis | A condition of cattle, caused by the penetration of the stomach wall, usually the reticulum, by any kind of sharp object (usually metallic) which has been swallowed. Synonym: hardware disease, traumatic reticuloperitonitis. (05 Mar 2000) |
| traumatic retinopathy | Transient traumatic retinal angiopathy due to a sudden rise in venous pressure, as in compression of the body from seat belt injury; ocular fundi show large white patches associated with the retinal veins about the disk or macula, haemorrhages, and retinal oedema; thought to be due to fat embolism from bone marrow. Synonym: Purtscher's disease, transient retinopathy, traumatic retinopathy. (05 Mar 2000) |
| traumatic tetanus | Tetanus following infection of a wound. (05 Mar 2000) |
| Frenkel's anterior ocular traumatic syndrome | <syndrome> An obsolete term for traumatic iridoplegia, which consists of mydriasis, hyphema, small iris tears near the pupil, discrete punctate opacities of the lens, and occasionally iridodialysis. (05 Mar 2000) |
| all-trans-retinal | The orange retinaldehyde resulting from the action of light on the rhodopsin of the retina, which converts the 11-cis-retinal component of the rhodopsin to all-trans-retinal plus opsin. Synonym: trans-retinal, visual yellow. (05 Mar 2000) |
| blood-retinal barrier | Specialised nonfenestrated tightly-joined endothelial cells that form a transport barrier for certain substances between the retinal capillaries and the retinal tissue. (12 Dec 1998) |
| central retinal artery occlusion | <ophthalmology> The sudden blockage of the retinal artery with a blood clot that commonly leads to a painless but irreversible blindness in that eye. (12 Jan 1998) |
| central retinal fovea | A depression in the centre of the macula retinae containing only cones and lacking blood vessels. Synonym: fovea centralis retinae, central pit. (05 Mar 2000) |
| central retinal vein occlusion | <ophthalmology> The sudden blockage of the retinal vein with blood clot that commonly leads to a painless irreversible blindness in that eye. (12 Jan 1998) |
| retinal | 1. <anatomy> Pertaining to the retina. 2. <biochemistry> The aldehyde of retinol, derived by the oxidative enzymatic splitting of absorbed dietary carotene and having vitamin A activity. In the retina, retinal combines with opsins to form visual pigments. One isomer, 11 cis retinal combines with opsin in the rods (scotopsin) to form rhodopsin or visual purple. Another, all trans retinal (trans r.), visual yellow, xanthopsin) results from the bleaching of rhodopsin by light, in which the 11 cis form is converted to the all trans form. Retinal also combines with opsins in the cones (photopsins) to form the three pigments responsible for colour vision. (18 Nov 1997) |
| retinal adaptation | Adjustment to degree of illumination. (05 Mar 2000) |
| retinal anlage tumour | A benign neoplasm of neuroectodermal origin that most often involves the anterior maxilla of infants in the first year of life. It presents clinically as a rapidly growing blue-black lesion producing a destructive radiolucency; histologically, it is characterised by small round undifferentiated tumour cells interspersed with larger polyhedral melanin-producing cells arranged in an alveolar configuration. Synonym: melanoameloblastoma, pigmented ameloblastoma, pigmented epulis, progonoma of jaw, retinal anlage tumour. (05 Mar 2000) |