(a.) Of or pertaining to the iris or rainbow; prismatic; as, the iridal colors.
Example Sentences:
(1) Changes in pupil size indicated a substantial cholinergic effect on the iridal sphincter musculature.
(2) Pigmentations are significantly related to the colour of the iris (visible in 8% of blue irides, against in 40% of brown).
(3) In subjects with light or hazel irides, phenylephrine caused maximal dilatation in 60 to 75 min, mean values being 5.6 mm with 1 drop of 2%, 6.0 mm with 2 drops of 2.5%, and 7.1 mm with 1 drop of 10%.
(4) The effect of desipramine, clonidine, phentolamine, phenoxybenzamine and GD131 on uptake of [(3)H]-NA in isolated irides was determined.3.
(5) The effect in the eye was small at 2 minutes, but at 10 minutes local blood flows in the choroid and the ciliary body were decreased by 50% and the iridal blood flow by 30%.
(6) Furthermore, an uneven distribution of fluorescent nerve fibers was observed within individual irides.
(7) 5HT-positive fibers also penetrated into the irides forming dense networks in the walls of blood vessels and elsewhere in the irides.
(8) In the patients with other types of iridal disorder the endothelial cells were normal in form.
(9) Patients with darker, thicker irides are more prone to have subacute angle-closure glaucoma, which requires gonioscopy and the recognition of subtle details that may be difficult to interpret.
(10) Dogs affected with chronic superficial keratitis (CSK) and clinically normal dogs were tested for cellular hypersensitivity, using the leukocyte migration-inhibition (LMI) technique to 3 ocular antigens (Staphylococcus aureus and corneal and iridal proteins).
(11) The ocular examination reveals a small anterior chamber, sectorial iridic atrophies, a mydriatic pupil, the camerular angle closed.
(12) Surprisingly, a large variation in the amount of vasoactive intestinal polypeptide-positive nerves was seen among irides.
(13) These lesions were most often found in blue irides at the 12 o'clock region.
(14) Isolated rat irides were incubated with [(3)H]-noradrenaline [(3)H-NA] (10(-7)M), superfused with buffer and then stimulated by an electrical field.
(15) At fluorescein angiography (FAG) at a mean of 8 months post-operatively, 9 showed leaking from the iridal vessels, and 3 were normal: Three cases were excluded because of factors affecting the iris FAG.
(16) Eleven pigmented rabbit irides were irradiated with the argon laser and were examined electron-microscopically at several intervals between 15 minutes and 256 days after exposure.
(17) A Thy-1-positive fibre plexus reappeared in intraocular iris transplants after 4 weeks, strongly indicating that Thy-1-immunoreactive fibres in adult mouse irides are associated with the nerve fibres and not with their supportive tissue.
(18) These results indicate that S-Ag and its mRNA accumulate in the irides of some uveitic patients.
(19) Irides of neonates showed scattered, smooth fibres in a sparse plexus, without visible axon bundles.
(20) Obliteration of the ciliary cleft by diffuse iridal melanoma (38 eyes), or other neoplasms (14 eyes), or by the presence of idiopathic lymphocytic-plasmacytic anterior uveitis (53 eyes) were the most frequent lesions likely to explain the development of glaucoma.
Iris
Definition:
(n.) The goddess of the rainbow, and swift-footed messenger of the gods.
(n.) The rainbow.
(n.) An appearance resembling the rainbow; a prismatic play of colors.
(n.) The contractile membrane perforated by the pupil, and forming the colored portion of the eye. See Eye.
(n.) A genus of plants having showy flowers and bulbous or tuberous roots, of which the flower-de-luce (fleur-de-lis), orris, and other species of flag are examples. See Illust. of Flower-de-luce.
(n.) See Fleur-de-lis, 2.
Example Sentences:
(1) The advantages of the incision through the pars plana ciliaris are (1) easier approach to the vitreous cavity, (2) preservation of the crystalline lens and an intact iris, and (3) circumvention of the corneal and chamber angle complications sometimes associated with the transcorneal approach.
(2) The so-called apparent accommodation has been measured in patients implanted with anterior chamber, iris support and posterior chamber IOLs.
(3) These patients did not have narrow anterior chamber angles preoperatively, and several were aphakix with surgical iris colobomas.
(4) A 1.5-year-old girl presented with a peripheral iris mass.
(5) In normal as well as in cirrhotic subjects somatostatin infusion provoked a marked reduction of the IRI plasma level and this was uninfluenced by subsequent glucagon administration.
(6) While tonic pupil and reduced sweating can be attributed to the affection of postganglionic cholinergic parasympathetic and sympathetic fibres projecting to the iris and sweat glands, respectively, the pathogenesis of diminished or lost tendon jerks remains obscure.
(7) Adrenergic desensitization of the eye resulted in attenuation of: The polyphosphoinositide response in the iris, measured both as loss of 32P-radioactivity from phosphatidylinositol 4,5-bisphosphate (PIP2) and as IP3 accumulation; the epinephrine-stimulated liberation of AA, from membrane phosphoinositides and other phospholipids, and PGE2 release in the iris; and the epinephrine-induced muscle contraction in the iris dilator.
(8) ChAT activities of the iris, adrenal gland, and superior cervical ganglion were similar in all groups.
(9) Plasma glucose, insulin (IRI), glucagon (IRG) and SRIF-LI were measured.
(10) The appearance in aqueous humor of selected metabolites of arachidonic acid metabolism at various times was correlated with the influx of protein and myeloperoxidase activity in the iris-ciliary body.
(11) A decrease in the levels of IRI, C-peptide and biological activity of serum insulin in the 1st group indicated a possibility of type I diabetes mellitus in such patients.
(12) When using a nylon thread for the attachment of a pseudophakos to the iris, it may happen that the suture is slung tightly around the implant-lens.
(13) Iris prolapse did not interfere with the procedure.
(14) While there are many potential causative factors, erroneous concepts of IOL positioning and design appear to have led to PBK with many iris-supported and anterior chamber lens styles.
(15) Examples include the specific pattern of hypodontia seen before the development of iris dysplasia in Rieger syndrome, and the presence of supernumerary teeth and facial osteomas preceding malignant transformation of intestinal polyps in Gardner syndrome.
(16) Soft lenses also provide the options of disposability and of iris color change.
(17) Fluorescence angiography of the iris was performed on 135 patients with diabetes mellitus.
(18) These increases paralleled the in vitro rise in iris [3H]norepinephrine ([3H]NE) uptake, a measure of the presence of functional nerve terminal membrane.
(19) Pigmentations are significantly related to the colour of the iris (visible in 8% of blue irides, against in 40% of brown).
(20) Plasma C-peptide immunoreactivity (CPR) and immunoreactive insulin (IRI) increased during the infusion.