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Related Concept Videos

Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

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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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Glaucoma: Overview01:25

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Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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Angle Closure Glaucoma: Treatment01:28

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Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

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As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...
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Ophthalmic Drug Delivery Systems01:23

Ophthalmic Drug Delivery Systems

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Ophthalmic drug delivery faces major limitations due to poor absorption across the corneal membrane. This process is primarily driven by diffusion and is influenced by two main factors: the physicochemical properties of the drug and tear drainage. Most ophthalmic drugs, such as pilocarpine, epinephrine, atropine, and local anesthetics, are weak bases. They are typically formulated at an acidic pH to enhance chemical stability. However, this leads to high ionization, reducing their ability to...
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Related Experiment Video

Updated: Apr 14, 2026

Glaucoma-inducing Procedure in an In Vivo Rat Model and Whole-mount Retina Preparation
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Biochemical changes and treatment in glaucoma.

I M Ciotu1, I Stoian1, L Gaman1

  • 1Biochemistry Department, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.

Journal of Medicine and Life
|April 28, 2015
PubMed
Summary
This summary is machine-generated.

Glaucoma, a leading cause of blindness, involves optic nerve damage due to high intraocular pressure and oxidative stress. Current treatments aim to understand its pathology and improve efficacy against this neurodegenerative disease.

Keywords:
glaucomaneuroprotectionnitric oxideoxidative stress

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Laser Capture Microdissection of Highly Pure Trabecular Meshwork from Mouse Eyes for Gene Expression Analysis
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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Cell Biology

Background:

  • Glaucoma is a primary cause of irreversible blindness globally.
  • It is characterized by elevated intraocular pressure and retinal ganglion cell apoptosis.
  • Despite extensive research, effective treatments to halt glaucoma progression remain elusive.

Purpose of the Study:

  • To elucidate the complex physiopathology of glaucoma.
  • To evaluate the efficacy of current and potential therapeutic strategies.
  • To highlight the role of oxidative stress in glaucoma pathogenesis.

Main Methods:

  • Literature review of glaucoma research.
  • Analysis of studies on intraocular pressure and oxidative stress.
  • Examination of cellular mechanisms involved in retinal ganglion cell death.

Main Results:

  • Free oxygen radicals contribute significantly to neuronal apoptosis in the optic nerve head.
  • Oxidative stress also degrades trabecular meshwork cells, impacting aqueous humor outflow.
  • Understanding these mechanisms is crucial for developing targeted glaucoma therapies.

Conclusions:

  • Glaucoma's neurodegenerative nature necessitates a deeper understanding of its underlying mechanisms.
  • Targeting oxidative stress pathways presents a promising therapeutic avenue.
  • Further research is vital to halt glaucoma progression and preserve vision.