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Related Concept Videos

Visual Agnosia01:12

Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...
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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...
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.
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Related Experiment Video

Updated: May 21, 2026

Stereoacuity Improvement using Random-Dot Video Games
06:25

Stereoacuity Improvement using Random-Dot Video Games

Published on: January 14, 2020

Passive auditory stimulation improves vision in hemianopia.

Jörg Lewald1, Martin Tegenthoff, Sören Peters

  • 1Department of Cognitive Psychology, Faculty of Psychology, Ruhr University Bochum, Bochum, Germany. joerg.lewald@rub.de

Plos One
|June 6, 2012
PubMed
Summary
This summary is machine-generated.

Passive auditory stimulation improved visual field detection in hemianopia patients by nearly 100%. This novel, non-invasive approach temporarily enhanced vision in the blind hemifield, offering a new rehabilitation strategy.

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Auditory Neuroscience

Background:

  • Hemianopia, a visual field disorder, typically requires active training for rehabilitation.
  • Current rehabilitation techniques often involve visual or audio-visual stimulation.
  • A novel approach using passive auditory stimulation is explored.

Purpose of the Study:

  • To investigate the efficacy of passive unimodal auditory stimulation for hemianopia rehabilitation.
  • To determine if auditory stimulation can improve visual detection in patients with hemianopia.
  • To assess the duration and reversibility of any observed visual field improvements.

Main Methods:

  • Ten patients with pure hemianopia underwent one hour of unilateral passive auditory stimulation.
  • Stimulation was applied to either the anopic (blind) or intact hemifield.
  • Visual detection tasks were performed before and after stimulation, and during recovery.

Main Results:

  • Passive auditory stimulation on the blind side of the hemianopic field improved visual detection by almost 100%.
  • This enhancement was observed within 30 minutes post-stimulation.
  • The performance improvement was reversible, returning to baseline within 1.5 hours.

Conclusions:

  • Passive auditory stimulation can temporarily enhance visual field performance in hemianopia.
  • This suggests activation of residual visual pathways by auditory stimuli.
  • Unimodal auditory stimulation presents a novel, passive rehabilitation strategy for visual field disorders.