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Related Concept Videos

Glaucoma: Overview01:25

Glaucoma: Overview

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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...
623
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.
Drugs such as carbonic anhydrase inhibitors, α2- and...
481
Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

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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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Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

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At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
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Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

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Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
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Hypertension II: Pathophysiology01:29

Hypertension II: Pathophysiology

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Hypertension is a chronic condition in which the blood's force against artery walls is excessively high, posing risks such as heart disease. The condition's underlying mechanisms involve complex interactions among the cardiovascular, kidney, and autonomic nervous systems.Renin-Angiotensin-Aldosterone System (RAAS): This system significantly influences blood pressure regulation. When blood pressure decreases, the kidneys secrete renin. This enzyme transforms angiotensinogen, a plasma protein,...
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Related Experiment Video

Updated: Jul 23, 2025

Glaucoma-inducing Procedure in an In Vivo Rat Model and Whole-mount Retina Preparation
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Homocysteine and Glaucoma.

Joshua Washington1, Robert Ritch2, Yutao Liu1,3

  • 1Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA.

International Journal of Molecular Sciences
|July 14, 2023
PubMed
Summary
This summary is machine-generated.

High homocysteine (Hcy) levels may contribute to glaucoma, a leading cause of blindness. Further research is needed to understand this link and develop treatments for Hcy-associated glaucoma.

Keywords:
aqueous humorexfoliation glaucomaglaucomahomocysteineprimary open-angle glaucoma

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Biochemistry

Background:

  • Elevated homocysteine (Hcy) is linked to neurodegenerative diseases.
  • Glaucoma, a major cause of blindness, is associated with Hcy metabolism defects.
  • The exact role of Hcy in glaucoma pathophysiology is not fully understood.

Purpose of the Study:

  • To comprehensively review the relationship between elevated Hcy levels and glaucoma.
  • To explore the potential of Hcy as a risk factor for glaucoma development.
  • To synthesize current knowledge on Hcy's role in glaucoma pathogenesis.

Main Methods:

  • Systematic literature search of PubMed and Google Scholar databases.
  • Review and analysis of studies investigating Hcy levels and glaucoma.
  • Synthesis of findings regarding Hcy metabolism and neurodegeneration.

Main Results:

  • Evidence suggests elevated Hcy may play a significant role in glaucoma pathogenesis.
  • The review highlights a potential link between Hcy and the development of glaucoma.
  • Current understanding of Hcy's specific contribution to glaucoma requires further investigation.

Conclusions:

  • Elevated Hcy is implicated in the pathogenesis of glaucoma.
  • Understanding Hcy-associated glaucoma is crucial for developing novel therapeutic and prophylactic strategies.
  • Further research is essential to elucidate the precise mechanisms and clinical significance of Hcy in glaucoma.