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Updated: Mar 17, 2026
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Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues
Published on: December 4, 2013
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Stereo Vision: The Haves and Have-Nots
Robert F Hess1, Long To2, Jiawei Zhou1
1McGill Vision Research, Department of Ophthalmology, McGill University, Montreal, Canada.
I-Perception
|July 20, 2016
Summary
Most people have good stereo vision, but a significant portion do not. This study reveals that 32% of individuals have moderate to poor 3-D stereo vision, challenging previous assumptions about widespread stereo abilities.
Area of Science:
- Neuroscience
- Vision Science
- Ophthalmology
Background:
- Front-facing eyes provide overlapping visual fields, enabling depth perception through binocular disparity.
- Stereo vision is crucial for camouflage detection and fine motor skills like object grasping.
- It is commonly believed that only a small percentage of the population lacks stereo vision.
Purpose of the Study:
- To investigate the prevalence of varying degrees of stereo vision in the general population.
- To challenge the assumption that most people possess good stereo abilities.
Main Methods:
- The study assessed stereo vision capabilities across a large population sample.
- Participants were categorized based on their measured stereo vision performance.
Main Results:
- Contrary to popular belief, only 68% of the population exhibits good to excellent stereo vision.
- A substantial 32% of individuals demonstrate moderate to poor stereo vision.
- This indicates a significant portion of the population are 'have-nots' regarding stereo vision.
Conclusions:
- The prevalence of poor stereo vision is much higher than previously estimated.
- The underlying causes for diminished stereo vision are likely neural.
- There is potential for stereo vision deficits to be reversible.
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