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Related Concept Videos

Glaucoma: Overview01:25

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: Treatment01:27

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: Treatment01:28

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...
Photoreceptors and Visual Pathways01:22

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...
Diabetic Retinopathy01:27

Diabetic Retinopathy

DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...

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Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents
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Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents

Published on: February 15, 2022

Glaucoma in developing countries.

Ravi Thomas1

  • 1Queensland Eye Institute and University of Queensland, 41 Annerley Road, South Brisbane 4105, Queensland, Australia

Indian Journal of Ophthalmology
|September 5, 2012
PubMed
Summary
This summary is machine-generated.

Preventing blindness from glaucoma in developing countries requires integrating detection and management into existing eye care programs. Case detection, not mass screening, is recommended, emphasizing comprehensive eye exams and adequate facilities for intervention.

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Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents
10:10

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Area of Science:

  • Ophthalmology
  • Public Health
  • Global Health

Background:

  • Glaucoma poses a significant public health challenge in developing nations, exacerbated by limited diagnostic tools and treatments.
  • Low public awareness and inadequate routine eye examinations in clinics hinder early glaucoma detection.

Purpose of the Study:

  • To outline a strategy for preventing blindness caused by glaucoma in developing countries.
  • To address the challenges of glaucoma management in resource-limited settings.

Main Methods:

  • Extrapolation of data and experience from eye care delivery models in India.
  • Development of recommendations based on existing knowledge and practice.

Main Results:

  • Glaucoma is a public health problem, but diagnostic and therapeutic barriers exist.
  • Recommended strategy: case detection over population screening, focusing on individuals with existing vision loss for open-angle glaucoma.
  • Angle-closure glaucoma blindness is preventable with clinical detection and interventions like cataract surgery.

Conclusions:

  • Glaucoma management must be integrated into broader blindness prevention programs.
  • Comprehensive eye examinations and their teaching in residency programs are crucial for detecting preventable blindness.
  • Glaucoma detection programs require adequate diagnostic and surgical facilities, with outcomes measured by functional improvements.