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Glaucoma: Overview

Glaucoma: Overview

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...

Open Angle Glaucoma: Treatment

Open Angle Glaucoma: Treatment

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...

Angle Closure Glaucoma: Treatment

Angle Closure Glaucoma: Treatment

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...

Genetic Lingo

Genetic Lingo

Photoreceptors and Visual Pathways

Photoreceptors and Visual Pathways

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, whereas...

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Related Experiment Video

Updated: Jun 6, 2026

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

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

Published on: June 3, 2018

Complex genetic mechanisms in glaucoma: an overview.

Kollu N Rao¹, Srujana Nagireddy, Subhabrata Chakrabarti

¹Kallam Anji Reddy Molecular Genetics Laboratory, Prof Brien Holden Eye Research Centre, LV Prasad Eye Institute, Hyderabad, India.

Indian Journal of Ophthalmology

|December 15, 2010

Summary

This summary is machine-generated.

Glaucoma, a hereditary optic neuropathy, involves complex genetic factors. This review appraises current knowledge on glaucoma

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Area of Science:

Ophthalmology
Genetics
Molecular Biology

Background:

Glaucomas are hereditary optic neuropathies causing irreversible vision loss.
Pathogenesis involves complex, multifactorial molecular mechanisms and genetic heterogeneity.
Known causative genes include MYOC, OPTN, WDR36, NTF4 (POAG), and CYP1B1, LTBP2 (congenital/developmental).

Purpose of the Study:

To review current understanding of molecular mechanisms in glaucoma.
To appraise genetic factors contributing to glaucoma pathogenesis.
To outline future research directions in glaucoma genetics.

Main Methods:

Literature review of genetic association studies.
Analysis of characterized genes in primary open angle glaucoma (POAG) and congenital glaucomas.
Synthesis of scientific knowledge and technological advancements.

Main Results:

Genetic heterogeneity is a key feature of all glaucomas.
Limited involvement found in candidate gene association studies.
Multiple genes likely contribute to glaucoma pathogenesis with varying effects.

Conclusions:

Unraveling the molecular basis of glaucoma requires understanding complex genetic interactions.
Further research is needed to identify all contributing genes and pathways.
Technological advancements will aid future discoveries in glaucoma genetics.