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Tropicamide, sold under the brand name Mydriacyl among others, is a medication used to dilate the pupil and help with examination of the eye. [3] Specifically it is used to help examine the back of the eye. [4] It is applied as eye drops. [3] Effects occur within 40 minutes and last for up to a day. [3]
[1] [5] As an eye drop it is used to manage angle closure glaucoma until surgery can be performed, ocular hypertension, primary open angle glaucoma, and to constrict the pupil after dilation. [1] [6] [7] However, due to its side effects, it is no longer typically used for long-term management. [8]
It is commonly used as an eye drop during pediatric eye examinations to dilate the eye and prevent the eye from focusing/accommodating (cycloplegic). Cyclopentolate [citation needed] or atropine can also be administered to reverse muscarinic and central nervous system effects of indirect cholinomimetic (anti-AChase) administration.
Topical atropine is used as a cycloplegic, to temporarily paralyze the accommodation reflex, and as a mydriatic, to dilate the pupils. [15] Atropine degrades slowly, typically wearing off in 7 to 14 days, so it is generally used as a therapeutic mydriatic, whereas tropicamide (a shorter-acting cholinergic antagonist) or phenylephrine (an α-adrenergic agonist) is preferred as an aid to ...
Phenylephrine is used as an eye drop to dilate the pupil to facilitate visualization of the retina. It is often used in combination with tropicamide as a synergist when tropicamide alone is not sufficient. Narrow-angle glaucoma is a contraindication to phenylephrine use. As a mydriatic, it is available in 2.5% and 10% eye drops. Phenylephrine ...
Carbachol is primarily used in the treatment of glaucoma, but it is also used during ophthalmic surgery. [3] Carbachol eyedrops are used to decrease the pressure in the eye for people with glaucoma. It is sometimes used to constrict the pupils during cataract surgery.
Demecarium causes constriction of the pupil , which improves the drainage of the fluid in the eye (aqueous humour). [2] As demecarium reversibly inhibits cholinesterase , it can be administered less frequently than other parasympathomimetic drugs, such as carbachol .
Common side effects include red eyes, dry eyes, change in color of the eyes, blurry vision, and cataracts. [ 5 ] [ 6 ] [ 4 ] Use during pregnancy or breastfeeding is generally not recommended. [ 1 ] [ 6 ] [ 4 ] It is a prostaglandin analog and works by increasing the outflow of aqueous fluid from the eyes.
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