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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...
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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...
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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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Genetic Lingo01:11

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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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Genome-wide Association Studies-GWAS01:11

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Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
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Related Experiment Video

Updated: Sep 9, 2025

Laser Capture Microdissection of Highly Pure Trabecular Meshwork from Mouse Eyes for Gene Expression Analysis
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Glaucoma Genetics: Lessons Learned and the New Frontier.

Janey L Wiggs1, Louis R Pasquale2

  • 1Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear, Boston, Massachusetts.

Ophthalmology. Glaucoma
|September 4, 2025
PubMed
Summary
This summary is machine-generated.

Genetic research has identified key genes for early-onset glaucoma and numerous risk factors for adult-onset disease. Genetic testing aids in early detection and risk assessment, crucial for preventing vision loss.

Keywords:
FunctionalGene-based diagnostic testingGenetic analysesGlaucomaPolygenic risk scoresanalyses

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Area of Science:

  • Genetics and Ophthalmology
  • Molecular Biology
  • Public Health Genetics

Background:

  • Glaucoma encompasses a group of eye conditions that damage the optic nerve, often due to high intraocular pressure.
  • Genetic factors play a significant role in both early-onset and adult-onset forms of glaucoma.
  • Understanding the genetic basis is crucial for diagnosis, risk prediction, and potential therapeutic strategies.

Purpose of the Study:

  • To summarize the current understanding of genetic factors contributing to glaucoma.
  • To highlight the role of genetic testing in clinical management and risk stratification.
  • To identify future research priorities in glaucoma genetics.

Main Methods:

  • Review of genetic analyses identifying genes and genomic loci associated with glaucoma.
  • Analysis of gene functions related to ocular development, extracellular matrix, and other biological pathways.
  • Discussion of the application of genetic testing and polygenic risk scores (PRS).

Main Results:

  • Twelve primary genes identified for early-onset glaucoma, encoding proteins in ocular development and extracellular matrix.
  • Hundreds of genomic loci identified for adult-onset glaucoma, involving diverse biological pathways.
  • Genetic testing enables informed counseling for early-onset glaucoma and risk stratification for adult-onset disease.

Conclusions:

  • Glaucoma's genetic architecture is complex, particularly for adult-onset forms, involving multiple genetic and environmental factors.
  • Genetic testing is a valuable tool for identifying at-risk individuals, enabling timely intervention and vision preservation.
  • Future research should focus on discovering novel genes, understanding genetic causality, and elucidating molecular mechanisms.