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Related Concept Videos

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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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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, 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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Related Experiment Video

Updated: Apr 29, 2026

Motor Dual-Tasks for Gait Analysis and Evaluation in Post-Stroke Patients
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Dual-Task Gait Performance in Moderate-to-Severe Glaucoma.

Shuwen Jia1, Stanley J Winser2, Allen M Y Cheong1,3,4

  • 1School of Optometry.

Journal of Glaucoma
|April 27, 2026
PubMed
Summary
This summary is machine-generated.

Glaucoma patients show similar dual-task gait changes as controls, but males exhibit reduced knee and hip flexion during visual tasks. Gait measures demonstrated good reliability in glaucoma participants, highlighting sex-specific differences in mobility.

Keywords:
dual tasksgaitobstacle crossingvisual field lossvisual search

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Area of Science:

  • Ophthalmology and Vision Science
  • Biomechanics and Motor Control
  • Gerontology and Rehabilitation

Background:

  • Glaucoma-induced vision loss impacts mobility and dual-task performance.
  • Dual-task gait in glaucoma patients remains understudied.
  • Investigating sex-specific gait differences is crucial for understanding mobility challenges.

Purpose of the Study:

  • Compare dual-task gait parameters between glaucoma patients and healthy controls.
  • Examine sex-specific differences in gait under dual-task conditions.
  • Assess the test-retest reliability of gait measures in glaucoma patients.

Main Methods:

  • Gait analysis using a 10-camera Vicon system with obstacles and visual tasks.
  • Comparing 28 glaucoma patients with 25 age-matched controls.
  • Analyzing reliability with intraclass correlation coefficients (ICCs) in 10 glaucoma participants.

Main Results:

  • No significant overall dual-task gait differences between glaucoma patients and controls.
  • Males with glaucoma showed reduced knee and hip flexion during visual search compared to controls.
  • Most gait measures exhibited moderate-to-excellent test-retest reliability (ICCs: 0.63-0.97) in glaucoma patients.

Conclusions:

  • Glaucoma does not significantly alter overall dual-task gait, but specific sex-dependent patterns exist.
  • Reduced knee and hip flexion in males with glaucoma during visual tasks warrants attention.
  • Findings emphasize considering sex-specific strategies for managing dual-task mobility challenges in glaucoma.