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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...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

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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Related Experiment Video

Updated: May 7, 2026

Laser Capture Microdissection of Highly Pure Trabecular Meshwork from Mouse Eyes for Gene Expression Analysis
13:47

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

Published on: June 3, 2018

Why do people present late with advanced glaucoma? A qualitative interview study.

Maria Prior1, Jill J Francis, Augusto Azuara-Blanco

  • 1Health Services Research Unit, University of Aberdeen, , Aberdeen, UK.

The British Journal of Ophthalmology
|September 26, 2013
PubMed
Summary
This summary is machine-generated.

Late detection of severe glaucoma in UK adults stems from both patient-level delays and healthcare system issues, including missed opportunities for diagnosis and delayed referrals. Addressing false negatives is crucial.

Keywords:
Glaucoma

More Related Videos

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

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

Published on: May 25, 2020

Related Experiment Videos

Last Updated: May 7, 2026

Laser Capture Microdissection of Highly Pure Trabecular Meshwork from Mouse Eyes for Gene Expression Analysis
13:47

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

Published on: June 3, 2018

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

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

Published on: May 25, 2020

Area of Science:

  • Ophthalmology
  • Public Health
  • Health Services Research

Background:

  • Glaucoma is a leading cause of irreversible blindness.
  • Timely diagnosis and treatment are critical for managing glaucoma and preventing vision loss.
  • Understanding patient and system factors influencing detection delays is essential for improving eye care pathways.

Purpose of the Study:

  • To investigate the behaviors and detection pathways of adults with severe glaucoma presenting to UK hospital eye services.
  • To identify factors contributing to delayed diagnosis and treatment in glaucoma patients.

Main Methods:

  • Qualitative study employing semistructured interviews.
  • Interviews were guided by models of diagnostic delay.
  • Explored participants' self-reported experiences of glaucoma detection.

Main Results:

  • Eleven patients from two UK centers participated.
  • Some patients had infrequent or no prior eye examinations.
  • Multiple missed opportunities for early glaucoma detection and referral were reported by participants.
  • Delays were attributed to both patient-level factors and healthcare provider system issues.

Conclusions:

  • Late glaucoma detection can be influenced by patient-related delays.
  • Healthcare system factors, including diagnostic accuracy and referral efficiency, also contribute to delays.
  • Efforts to manage glaucoma suspects should address false negatives and reduce service delays alongside over-referral issues.