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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...
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...
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...

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Related Experiment Video

Updated: May 13, 2026

Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects
11:12

Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects

Published on: September 18, 2012

Driving patterns in older adults with glaucoma.

Suzanne W van Landingham1, Chad Hochberg, Robert W Massof

  • 1Wilmer Eye Institute, Johns Hopkins University, 600 N. Wolfe St., Baltimore, MD 21287, USA.

BMC Ophthalmology
|February 26, 2013
PubMed
Summary

Glaucoma significantly increases the risk of driving cessation and limitations in older adults. Visual field loss severity directly correlates with increased driving cessation odds and limitations, highlighting a critical safety concern.

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Last Updated: May 13, 2026

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Area of Science:

  • Ophthalmology
  • Gerontology
  • Transportation Safety

Background:

  • Driving is crucial for older adults' quality of life.
  • Glaucoma is common in the elderly and can impair driving ability.

Purpose of the Study:

  • To investigate the association between glaucoma, visual field (VF) loss, and driving cessation, limitations, and driver preference in older adults.

Main Methods:

  • A cross-sectional study involving 81 glaucoma patients and 58 glaucoma suspect controls aged 60-80.
  • Participants reported driving cessation, limitations, or preference for another driver.

Main Results:

  • Glaucoma patients were more likely to cease driving (23% vs. 6.9%) and report more driving limitations.
  • Driving cessation odds increased with glaucoma and worse visual field mean deviation (MD).
  • Increased VF loss severity correlated with a higher likelihood of reporting more driving limitations.

Conclusions:

  • Glaucoma and associated visual field loss are linked to increased driving cessation and limitations in the elderly.
  • Further research is needed to understand self-regulation of driving in glaucoma patients and ensure safety.