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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]
The word "glaucoma" comes from the Ancient Greek γλαύκωμα, [109] a derivative of γλαυκός (glaukos), [110] which commonly described the color of eyes which were not dark (i.e. blue, green, light gray). Eyes described as γλαυκός due to disease might have had a gray cataract in the Hippocratic era, or, in the early Common Era ...
[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]
In Horner's syndrome, the sympathetic innervation to the pupillary dilator muscle is lost. The affected pupil is thus miotic and the pupillary dilator responds to denervation by increasing α 1 receptors. Apraclonidine is useful in this case due to its weak α 1-adrenergic properties. When applied to the denervated (and thus hyper-sensitive ...
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 .
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 ...
Drops prepared from the plant were used to dilate women's pupils, an effect considered to be attractive and seductive. [ 14 ] [ 15 ] [ 12 ] Belladonna drops act as a muscarinic antagonist , blocking receptors in the muscles of the eye that constrict pupil size. [ 54 ]
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