| 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] |
| SCL | scleroderma; serum copper level; sinus cycle length; soft contact lens; stromal cell line; subcostal... |
| SLR | Shwartzman local reaction; single lens reflex; straight leg raising |
| toxic nodular goitre | <endocrinology> An enlarged thyroid gland which contains nodules which release excess thyroid hormone. This condition usually arises from long-standing simple goitre in the elderly. Symptoms of hyperthyroidism result. (12 Jan 1998) |
|---|---|
| toxic psychosis | A psychosis caused by some toxic substance, whether endogenous or exogenous. (05 Mar 2000) |
| toxic retinopathy | Retinal changes due to prolonged administration of various drugs. (05 Mar 2000) |
| toxic shock | See toxic shock syndrome. (12 Dec 1998) |
| toxic shock syndrome | <syndrome> A blood-borne bacterial infection caused by the genus Staphylococcus. Usually effects menstruating females under the age of thirty and was associated in the past with the use of a particular type of tampon (no longer used). Common symptoms include: fever, chills, vomiting, sore throat, headache and decreased urine output. Progression of disease can result in lowering of blood pressure (shock) and renal failure. Treatment includes hospitalisation and intravenous antibiotics emergently. (27 Sep 1997) |
| toxic substances | A chemical or mixture of chemicals that presents a high risk of injury to human health or to the environment. (05 Dec 1998) |
| toxic tetanus | Tonic spasms caused by strychnine or other tetanic. Synonym: toxic tetanus. (05 Mar 2000) |
| toxic unit | A unit formerly synonymous with minimal lethal dose but which, because of the instability of toxins, is now measured in terms of the quantity of standard antitoxin with which the toxin combines. See: L doses, minimal lethal dose. Synonym: toxin unit. (05 Mar 2000) |
| epidermal necrolysis, toxic | An exfoliative disease of skin seen primarily in adults and characterised by flaccid bullae and spreading erythema so that the skin has the appearance of being scalded. It results primarily from a toxic reaction to various drugs, but occasionally occurs as a result of infection, neoplastic conditions, or other exposure. (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) |