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Side effects may include allergic reactions, eye pain, and dilated pupils. [ 2 ] [ 4 ] [ 3 ] It is unclear if use in pregnancy is safe. [ 1 ] Nephazoline works by resulting in constriction of blood vessels thus decreasing redness while pheniramine works by blocking the effects of histamine to stop itching.
Since carbachol is poorly absorbed through topical administration, benzalkonium chloride is mixed in to promote absorption. [3] Carbachol is a parasympathomimetic that stimulates both muscarinic and nicotinic receptors. [3] In topical ocular and intraocular administration its principal effects are miosis and increased aqueous humour outflow. [3]
Benzalkonium chloride is a frequently used preservative in eye drops. Typical concentrations range from 0.004% to 0.01%. [17] Stronger concentrations can be caustic [18] and cause irreversible damage to the corneal endothelium. [19] Avoiding the use of benzalkonium chloride solutions while contact lenses are in place is discussed in the literature.
Travoprost, sold under the brand name Travatan among others, is a medication used to treat high pressure inside the eye including glaucoma. [4] Specifically it is used for open angle glaucoma when other agents are not sufficient. [5] [4] It is used as an eye drop. [4] Effects generally occur within two hours. [4]
The best eye drops for dry eyes in 2023 work to soothe various dry eye symptoms. Here, find expert-approved picks from Refresh, Systane, Opti-Free, and more.
Glaucoma medication is divided into groups based on chemical structure and pharmacologic action. The goal of currently available glaucoma therapy is to preserve visual function by lowering intraocular pressure (IOP) in patients that have an increased intraocular pressure.