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Related Concept Videos

Glaucoma: Overview01:25

Glaucoma: Overview

782
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...
782
Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

586
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...
586
Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

705
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...
705

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Related Experiment Video

Updated: Sep 17, 2025

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
07:11

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Analyzing the association between MPO levels and glaucoma severity.

Lingling Chen1, Jinxia Wang2, Yanping Gao3

  • 1Department of Immunology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, China.

Biomarkers in Medicine
|June 30, 2025
PubMed
Summary

Elevated plasma myeloperoxidase (MPO) is linked to glaucoma. This biomarker may help understand glaucoma

Keywords:
Plasma myeloperoxidasedisease severityglaucomainflammationoxidative stress

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Area of Science:

  • Ophthalmology
  • Biochemistry
  • Clinical Research

Background:

  • Glaucoma is a leading cause of irreversible blindness worldwide.
  • Understanding biomarkers for glaucoma diagnosis and progression is crucial.
  • Myeloperoxidase (MPO) is an enzyme implicated in inflammatory processes.

Purpose of the Study:

  • To investigate the association between plasma myeloperoxidase (MPO) levels and glaucoma.
  • To assess the potential clinical utility of plasma MPO as a biomarker in glaucoma.

Main Methods:

  • A cross-sectional study included 127 glaucoma patients and 106 healthy controls.
  • Plasma MPO levels were measured using enzyme-linked immunosorbent assay (ELISA).
  • Statistical analyses were performed to compare MPO levels and correlate them with glaucoma severity and clinical parameters.

Main Results:

  • Glaucoma patients exhibited significantly higher plasma MPO levels compared to healthy controls (p < 0.001).
  • Plasma MPO remained an independent risk factor for glaucoma after adjusting for confounders (OR = 1.05, p < 0.001).
  • Elevated MPO levels were associated with glaucoma severity and higher cup-to-disc ratios, particularly in early versus severe stages (AUC = 0.633).

Conclusions:

  • Elevated plasma MPO levels are independently associated with an increased risk of glaucoma.
  • Plasma MPO may serve as a valuable biomarker for understanding glaucoma pathogenesis and potentially aiding in disease assessment.