(n.) A long-continued or excessive dilatation of the pupil of the eye.
Example Sentences:
(1) A dose-dependent mydriasis was also observed in the treated eye.
(2) The pharmacokinetic parameters, apparent absorption, and elimination rate constants, of phenylephrine and the prodrug were determined from aqueous humor concentration-time and mydriasis-time profiles.
(3) We developed a new micro-iris retractor to achieve temporary intraoperative pupillary mydriasis in selected eyes undergoing pars plana vitreous surgery.
(4) It had a biphasic progression with an initial mydriasis (which directly correlated with the stimulus intensity), followed by a miotic phase.
(5) Mild mydriasis occurred with each drug, averaging +0.65 mm with dipivalyl epinephrine and +0.55 mm Hg with epinephrine.
(6) Accommodative microfluctuations were found to play a minor role in determining the magnitude of sensitivity out to an eccentricity of 5 degrees; between 5 degrees and 27.5 degrees, the effect of microfluctuations was masked by the mydriasis produced by the drugs used in the study.
(7) In a study in 12 healthy volunteers, local instillation of thymoxamine eye-drops (0.2%) completely reversed the mydriasis produced by ephedrine (5%) but not that produced by ephedrine (5%) together with tropicamide (0.5%).
(8) Total paralysis of the extraocular muscles supplied by the oculomotor nerve was noted in all the nine patients, and mydriasis was observed on the affected side in 4 of 7 patients with Tolosa-Hunt syndrome and 2 patients with the orbital pseudotumor syndrome.
(9) In tests of clonidine-induced mydriasis, the antagonist potencies of buspirone, 1-PP, idazoxan, WY 26392 and yohimbine corresponded closely to the doses of the compounds active in the anticonflict test.
(10) In patients with internal ophthalmoplegia, awareness of the possibility of pharmacologic mydriasis and correct use of topical pilocarpine testing can preclude the necessity for neuroradiologic and invasive diagnostic studies, even in cases with atypical or complex presentations.
(11) We propose the Maximal Mydriasis Test (MMT) as a simple and safe means to provide the cataract surgeon with objective and dependable pre-operative information on the idiosyncratic mydriatic response of the pupil.
(12) Nuclear lamellar cataracts are shown to become smaller in diameter with time, which favours medical treatment with mydriasis.
(13) Accommodative microfluctuations were attenuated with the antimuscarinic drug cyclopentolate HCl 1% and the concomitant mydriasis was matched on a separate trial using the sympathomimetic phenylephrine HCl 10%.
(14) Accommodation responses recorded are shown to be independent of horizontal eye movements, and little affected by the drug used for mydriasis.
(15) A case is reported of a phaeochromocytoma revealed during a general anaesthesia by a sudden hypertensive crisis associated with acute pulmonary oedema and signs of extreme sympathetic stimulation (bilateral mydriasis, piloerection, peripheral vasoconstriction).
(16) The maximum mydriasis attained 3.4 mm, lasted 2 h and slowly decayed over subsequent 20 h. Impulse transmission and conduction was blocked in a spherical volume of tissue about 3 mm in diameter the development of which could be approximated by diffusion from an instantaneous point source.
(17) Maximal mydriasis was obtained at 8 Hz, whereas full vasoconstriction was elicited with 5 Hz.
(18) Thymoxamine hydrochloride can be used intraocularly to reverse phenylephrine or epinephrine mydriasis during intraocular surgery (0.2-0.5 ml of 0.01% or 0.02% solutions proved to be effective).
(19) Published data indicate that either dapiprazole (0.5%) or moxisylyte (0.5%) enhance recovery from the mydriasis produced by tropicamide, phenylephrine, or their combination.
(20) After 14 l of irrigation fluid had been used, visual disturbances, bilateral mydriasis and drowsiness appeared, with no haemodynamic disturbances.
Mydriatic
Definition:
(a.) Causing dilatation of the pupil.
(n.) A mydriatic medicine or agent, as belladonna.
Example Sentences:
(1) This article discusses the advantages, clinical uses, limitations, and legal aspects of this mydriatic antagonist in optometric practice.
(2) Prior to surgery 1.0% suprofen or a placebo was instilled; the surgeon's normal regimen of mydriatics and cycloplegics was used.
(3) The total resource cost per screen of screening using non-mydriatic photography is also estimated.
(4) Atropine sulfate, a mydriatic and cycloplegic agent, is frequently used in patients undergoing glaucoma surgery.
(5) When phenylephrine base was suspended in sesame oil at 0.045, 0.12, and 0.45 M, the mydriatic activity was also greater than equimolar suspensions of phenylephrine HCl.
(6) The expected mydriatic effect of atropine sulfate was seen in both species and, similarly, the pupillary light reflex was impaired in rats and dogs receiving either formulation of atropine sulfate at both dose levels.
(7) In CH patients, pretreatment with clonidine augments the degree of anisocoria induced by tyramine instillation, increasing the mydriatic response only in the pain-free-side pupil.
(8) A comparative study in healthy subjects and diabetic patients of the mydriatic response to topical tropicamide 0.5% with and without added phenylephrine 10% is reported.
(9) The pupillary mydriatic response to phenylephrine and the forearm arterial vasoconstrictor response to intra-arterial norepinephrine did not change.
(10) We propose the Maximal Mydriasis Test (MMT) as a simple and safe means to provide the cataract surgeon with objective and dependable pre-operative information on the idiosyncratic mydriatic response of the pupil.
(11) Formation can be reduced by elimination of the iridectomy, elimination of routine mydriatic drops, and minimization of iris trauma at the time of surgery.
(12) The role of the non-mydriatic fundus camera in detection of diabetic retinopathy was evaluated as part of a comprehensive screening programme for diabetic complications offered to all diabetic patients in a rural town.
(13) The method includes: leaving the pupil undilated before anesthesia; applying topical anesthetic to the conjunctiva; injecting about 0.25 ml of anesthesia through the non-sensitive conjunctiva into the muscle cone, then waiting until the pupil becomes dilated before injecting an additional 1.5 ml; injecting 0.25 ml anesthesia under the conjunctiva and into the tendon of the superior rectus muscle; and applying short-acting mydriatics after the injection.
(14) On the second postoperative day, 20 patients received one drop of a combined solution of 0.5% tropicamide and 0.5% phenylephrine, and the remaining patients received no mydriatic agents.
(15) The results suggested that the mydriatic effect of detomidine was mediated by the alpha 2-adrenoceptors, and that mydriasis was a good model for studying alpha 2-adrenoceptor agonists and antagonists.
(16) The ocular examination reveals a small anterior chamber, sectorial iridic atrophies, a mydriatic pupil, the camerular angle closed.
(17) The mydriatic tolerance may be due to the decrease in receptor number in the iris dilator muscle.
(18) The PPF concentrations in the cornea, secondary aqueous, and iris-ciliary body increased in a dose-dependent manner, and the concentrations were higher in the presence of mydriatics.
(19) Like many other opiates, morphine has a specific dose dependent mydriatic effect in mice which is antagonized by naloxone.
(20) We studied the pupillary cardiovascular and gastrointestinal effects of two parasympathetic blocker mydriatics.