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Open Angle Glaucoma: Treatment01:27

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In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
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Cholinergic Antagonists: Pharmacokinetics01:24

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Cholinergic antagonists—such as antimuscarinics—are available in oral, topical, ocular, parenteral, and inhalational formulations. Most antimuscarinics are oral formulations,  while scopolamine is available as a topical patch, and ipratropium and tiotropium are available as inhalation aerosols or powders. Atropine, tropicamide, and cyclopentolate are topically instilled in the eye. Most antimuscarinics are lipid-soluble and readily absorbed from the gastrointestinal tract and...
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Drug delivery methods like oral inhalation, nasal sprays, transdermal patches, eye drops, intravitreal injection,  and rectal administration provide localized effects with reduced toxicity.
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Cholinergic Antagonists: Pharmacological Actions01:28

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Antimuscarinic drugs block muscarinic receptors in multiple systems, including the gut, eye, smooth muscles, respiratory tract, cardiovascular, and central nervous systems. They produce similar effects with varying selectivity depending on the specific agent and tissue. Here are the key pharmacological actions of antimuscarinics:
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Sedatives and Hypnotics Drugs: Miscellaneous Agents01:17

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Sedatives and hypnotics encompass a wide range of substances, each with its unique mechanism of action, uses, and potential adverse effects.
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Direct-Acting Cholinergic Agonists: Pharmacological Actions00:59

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Direct-acting cholinergic agonists exert their pharmacological actions by mimicking the effects of acetylcholine on postsynaptic muscarinic receptors to generate parasympathetic responses. These agents elicit a range of physiological responses, including cardiovascular effects. For example, activation of muscarinic receptors induces bradycardia, decreased cardiac output, reduced peripheral resistance, and consequent hypotension. In the eye, stimulation of M3 receptors leads to smooth muscle...
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Updated: May 7, 2025

Author Spotlight: A Novel Protocol for Intracameral Injections to Enhance Precision in Rodent Ophthalmology
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Systemic Medications and Their Ocular Side Effects.

Mashael Al-Namaeh1,2

  • 1Department of Clinical Research, Clinical Virtual Research Center, Wayne, USA.

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|January 2, 2025
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Summary
This summary is machine-generated.

Common systemic drugs can cause ocular side effects and toxicity. Eye care physicians must recognize these adverse drug reactions to ensure timely diagnosis and treatment of eye conditions.

Keywords:
antituberculous ocular toxicityocular toxicityretinal toxicitysystemic medicationtamoxifen ocular toxicityvisual field defect

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Area of Science:

  • Ophthalmology
  • Pharmacology

Background:

  • Systemic medications frequently cause ocular side effects and toxicity.
  • Familiarity with drug-induced ocular conditions aids in diagnosis.

Purpose of the Study:

  • To review common systemic medications and their associated ocular adverse effects.
  • To enhance physician awareness of potential drug-related eye issues.

Main Methods:

  • Review of common systemic medications based on clinical experience.
  • Compilation of known ocular side effects and toxicities.

Main Results:

  • Identified numerous systemic drugs with potential ocular adverse effects.
  • Highlighted the dose and duration dependency of these effects.

Conclusions:

  • Physicians need to be aware of drug-induced ocular toxicity.
  • Recognizing these effects is crucial for accurate diagnosis and patient care.