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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

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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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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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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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Related Experiment Video

Updated: May 30, 2025

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
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Cognitive Impairment in Primary Open Angle Glaucoma: A Case-Control Study.

Muskan Garg1, Neha Midha2, Rohit Verma3

  • 1Dr. Rajendra Prasad Centre for Ophthalmic Sciences.

Journal of Glaucoma
|January 28, 2025
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Summary
This summary is machine-generated.

Primary open-angle glaucoma (POAG) patients show significant cognitive impairment across multiple domains. This study found higher serum cortisol levels in POAG patients compared to healthy controls, suggesting a link between glaucoma and cognitive function.

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Endocrinology

Background:

  • Primary open-angle glaucoma (POAG) is a leading cause of irreversible blindness.
  • Cognitive impairment is increasingly recognized as a potential comorbidity in various systemic diseases.
  • The relationship between POAG and cognitive function requires further investigation.

Purpose of the Study:

  • To evaluate cognitive impairment in individuals diagnosed with POAG.
  • To compare cognitive function and serum cortisol levels between POAG patients and healthy controls.

Main Methods:

  • A case-control study involving 70 POAG patients and 70 healthy controls.
  • Comprehensive ophthalmological evaluations, including intraocular pressure and retinal nerve fiber layer thickness.
  • Extensive cognitive assessments using ACE-III, PGIMS, WCST, GNG task, and TMT.
  • Measurement of serum cortisol levels.

Main Results:

  • POAG patients exhibited significantly higher intraocular pressure and cup disc ratio, and lower RNFL thickness and mean deviation.
  • Cases showed significantly lower scores on ACE-III and PGIMS, and poorer performance on WCST and GNG tasks.
  • Elevated serum cortisol levels were observed in POAG patients, correlating with cognitive test performance and visual field parameters.

Conclusions:

  • Individuals with POAG demonstrate significant cognitive impairment in various domains.
  • Elevated serum cortisol levels are associated with POAG and cognitive deficits.
  • Early identification and management of cognitive impairment are crucial for comprehensive glaucoma care and patient quality of life.