| iridorrhexis | Deliberate, surgical tearing of the iris from the scleral spur in order to increase the breadth of a coloboma. Origin: irido-+ G. Rhexis, rupture (05 Mar 2000) |
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| iridoschisis | Separation of the anterior layer of the iris from the posterior layer; ruptured anterior fibres float in the aqueous humor. Origin: irido-+ G. Schisma, cleft (05 Mar 2000) |
| iridosclerotomy | An incision involving both sclera and iris. Origin: irido-+ sclera, + G. Tome, incision (05 Mar 2000) |
| iridosmium | <chemical> The native compound of iridium and osmium. It is found in flattened metallic grains of extreme hardness, and is often used for pointing gold pens. Origin: Iridium + osmium. Source: Websters Dictionary (01 Mar 1998) |
| iridotomy | <procedure, surgery> The use of laser light to punch a hole in the iris to relieve intraocular pressure within the eye (for example glaucoma). This surgery is painless and requires no anaesthesia. (27 Sep 1997) |
| iridoviridae | A family of large icosahedral DNA viruses infecting insects and poikilothermic vertebrates. Genera include iridovirus, ranavirus, chloriridovirus, lymphocystivirus, and goldfish virus 1-like viruses. (12 Dec 1998) |
| iridovirus | A genus of iridoviridae comprising small iridescent insect viruses. The infected larvae and purified virus pellets exhibit a blue to purple iridescence. (12 Dec 1998) |
| iridoviruses | <organism, virology> A group of nonoccluded viruses of insects, the crystalline array of virus particles in the cytoplasm of epidermal cells gives infected insects an irridescent appearance. (18 Nov 1997) |