Mydriatics


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Related to Mydriatics: glaucoma, Tropicamide

Mydriatics

 

substances that cause dilation of the pupil, or mydriasis, by increasing the tension of the radial fibers of the iris (sympathomimetics) or by decreasing the tension of the pupillar sphincter (M-cholinolytic substances, such as atropine, which also cause paralysis of accommodation). Mydriasis may also be caused by synthetic mydriatics.

Mydriatics are used as therapeutic agents (causing functional rest in acute inflammatory diseases and traumas of the eye) and for diagnostic purposes (for example, during examination of the fundus oculi). Mydriatics are applied in the form of solutions or ointments to the conjunctival sac of the eye. The use of mydriatics to treat glaucoma is contraindicated, since mydriatics increase intraocular pressure.

References in periodicals archive ?
Consequently, topical or intraocular parasympatholytic (atropine) and sympathomimetic (phenylephrine) mydriatic agents used to dilate mammalian pupils are not effective in a variety of avian species because of the high proportion of striated sphincter muscle fibers.
Effects of mydriatic agents in cockatoos, African gray parrots, and blue-fronted Amazon parrots.
There were no significant differences in the demographic characteristics and ocular parameters between those who received mydriatics and those who were in the control group.
These results demonstrate that the anterior chamber depth increased significantly in the subjects who received mydriatics when compared to the control group (_p = 0.
6%)in control group had small pupils and their dilatation with mydriatic was also poor.
AAU often responds quickly to treatment with steroids and mydriatic eye drops with no lasting adverse effect on vision and frequently no identifiable cause.
To study and evaluate the role of corticosteroids, antimicrobials and mydriatics during IOL implantation.
Oral Acetazolamide was prescribed as a mydriatic in all the cases, 94% of the cases were prescribed Homatropine eye drops as a mydriatic agent.
289 Table 5: Mydriatics & cycloplegics Generic name Rxs (thousands) % Atropine Sulphate 53.
09%) individuals of of more than 55 years of age, after use of mydriatic eye drop10.
To determine the efficacy of the neuromuscular blocking agent rocuronium bromide as a mydriatic agent in European kestrels (Falco tinnunculus) and to assess possible adverse effects due to its use, 10 kestrels received a single topical instillation with a pipette of 0.
7) If used at an excessive dose, NMBAs used in birds as mydriatic agents can have systemic adverse effects, represented by eyelid, neck, and hindlimb muscle paralysis, and possible death.