(a.) Of or pertaining to iridium; -- applied specifically to compounds in which iridium has a low valence.
Example Sentences:
(1) This report describes a young high-myopic patient who developed rubeosis iridis with peripheral retinal neovascularization one year after a circular buckling operation.
(2) The relationship between aqueous protein concentration (APC) and pathological changes in the iridial blood vessels was investigated in 49 eyes of 45 diabetic patients who underwent cataract surgery.
(3) It should also be stressed that intravitreal silicone oil suppresses iridial rubeosis or prevents its development.
(4) Chicken erythrocytes, and myxamoebae and plasmodia of Didymium iridis were employed as experimental tissues.
(5) The difference in morphology and staining between pars plicata and iridial processes could indicate a difference in function, e.g.
(6) Histopathological observations showed ischaemic changes in the anterior segment: iris and ciliary body atrophy, cataract formation, rubeosis iridis.
(7) An endothelial cell line established from a rhesus fetal choroid-retina proves to be an effective feeder layer for adult iridial cells.
(8) A case of ocular syphilis with severe ischemic retinopathy, rubeosis iridis and secondary glaucoma is described.
(9) The ultrastructural appearance of rubeosis iridis gives no clue to the underlying etiology and is similar to that reported in rubeosis associated with diabetes mellitus, central retinal vein occlusion, and uveitis.
(10) Twelve eyes (46%) remained with a permanent retinal detachment despite attempts at surgical repair, and eleven of these twelve eyes subsequently developed rubeosis iridis.
(11) The causes of the decrease in central visual acuity were macular edema, neovascularization with vitreal hemorrhage and rubeosis iridis with secondary glaucoma.
(12) The author evaluates the effect of two cryosurgical methods on the development of rubeosis iridis in neovascular glaucoma.
(13) The lowest value of all was found in patients with rubeosis iridis.
(14) An 11-year-old boy had a harelip with cleft palate, heterochromia iridis, blonde fundus on the eye with blue iris, and dystopia canthorum.
(15) These results suggest that breakdown of the blood-retinal barrier contributes to the APC increase in eyes with advanced diabetic retinopathy, and that changes in iridial vessels may mainly influence APC in non- and milder-retinopathy groups.
(16) It's clinical features are facial anhidrosis, ptosis, miosis, and hypochromia iridis of the affected side.
(17) It is stressed that EC-IC bypass surgery should be performed soon after the appearance of ischaemia and before the development of neovascular glaucoma or rubeosis iridis in order to obtain normal vision.
(18) We first performed laser pan-retinal photocoagulation, and at the same time performed occlusion of the major retinal vessels and persistent hypotony to aid for rubeosis iridis.
(19) The blood-aqueous barrier is formed by an epithelial barrier located in the nonpigmented layer of the ciliary epithelium and in the posterior iridial epithelium, and by the endothelium of the iridial vessels.
(20) In conclusion the central role of rubeosis iridis leading to secondary angle closure glaucoma is emphasized.
Iridium
Definition:
(n.) A rare metallic element, of the same group as platinum, which it much resembles, being silver-white, but harder, and brittle, and indifferent to most corrosive agents. With the exception of osmium, it is the heaviest substance known, its specific gravity being 22.4. Symbol Ir. Atomic weight 192.5.
Example Sentences:
(1) In addition the following are recommended: intra-arterial embolization of the A. maxilleris interna by carotis external angiography and intranasal contact irradiation with cobalt, radium, or iridium.
(2) It was shown that this oscillating iridium source can give satisfactory dose distribution even if the applicators are inserted with interval greater than 1.5 cm.
(3) The dosimetry of ophthalmic plaques designed to hold iridium-192 or iodine-125 seeds is investigated experimentally and by means of a computer model.
(4) There was a similar incidence of post-operative sensory loss in the two groups, reported by 82% of the mastectomy group and 77% of the iridium group, and an equivalent rate of improvement (76 and 80% respectively).
(5) After radio-sensitizing the post-iridium-192 contact irradiation apparatus on 133 patients with gliomas.
(6) Brachytherapy to the primary site to a dose of 30 Gy using iridium 192.
(7) In the iridium implant series, 86 catheters have been implanted for an average of 3.6 targets per patient.
(8) A total of 127 patients with histologically proved diagnosis of carcinoma of the tonsillar region and soft palate were treated over the past ten years utilizing interstitial iridium-192 implants.
(9) Since 1987, iridium guiding needles were introduced peroperatively in 79 of these patients.
(10) A common radiotherapeutic technique for treating breast cancer is the combination of external beam radiation with an interstitial iridium-192 boost.
(11) The results of a series of 369 patients followed more than 3 years indicate that implantation of Iridium-192 is effective not as sole treatment but as a booster dose 2 months after a course of external beam or intracavitary irradiation.
(12) In the 221 patients treated (225 breasts), 197 breasts received iridium implants and 26 patients received peri-operative chemotherapy (POPFAC).
(13) The results of several previously published series and our own recent series have led us to conclude that interstitial implants of iridium-192 wires are the most appropriate way to achieve the local control of penile carcinoma while conserving penile morphology and function when this technique is used to treat noninfiltrating or infiltrating tumors of less than 4 cm diameter with minor or no invasion of the corpora cavernosa.
(14) These electrodes are divided into major categories according to their particularities: platinum iridium, elgiloy, carbon-tip, anodized platinum and granulated iridium-platinum.
(15) Sixty patients with infiltrating bladder cancer were treated by partial cystectomy and iridium radiotherapy between 1977 and 1982.
(16) A screw that was specifically designed, allowed us to fix a precious metal tube to the skull cap for about eight days making possible the application of a marginal tumor dose of 30 Gy at a daily fractionation of 2 X 2 Gy using the iridium-afterloading-technique.
(17) This technique of endoscopic biliary decompression before internal iridium administration minimizes complications by allowing biliary drainage during treatment.
(18) Iridium-192 wires are most frequently employed as a sealed intracavitary source.
(19) Radioactive iridium wire (192Ir) was inserted into the surgical track to deliver prophylactic irradiation (4500 cGy) to prevent tumour seeding.
(20) A new technique is reported for the treatment of hepatic metastases using sonography-directed percutaneous placement of a 14-gauge needle applicator and a high-intensity "remote afterloading" iridium-192 (Ir-192) source for interstitial radiation therapy.