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Updated: May 9, 2026
08:04
Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues
Published on: December 4, 2013
On the typical development of stereopsis: fine and coarse processing
Deborah Giaschi1, Sathyasri Narasimhan, Aliya Solski
1University of British Columbia, Department of Ophthalmology and Visual Sciences, Vancouver, BC, Canada. giaschi@mail.ubc.ca
Vision Research
|July 30, 2013
Summary
Coarse stereopsis (large disparities) is mature by age 4, while fine stereopsis (small disparities) continues developing through childhood. This study assessed stereoscopic depth perception development in children and adults.
Area of Science:
- Vision Science
- Developmental Psychology
- Ophthalmology
Background:
- Stereoscopic depth perception utilizes both fine (fused) and coarse (diplopic) retinal disparities.
- While fine stereopsis development is studied, the maturation of coarse stereopsis remains less understood.
Purpose of the Study:
- To investigate the developmental trajectory of coarse stereopsis in children aged 4-14 years and adults.
- To compare the maturation of fine and coarse stereoscopic depth perception across different age groups.
Main Methods:
- Participants (children 4-14, adults) judged the relative depth of a stereoscopic target across a wide range of disparities (fine and coarse).
- Disparities were categorized based on individual diplopia thresholds.
- Performance was measured as percent correct depth direction as a function of disparity and age.
Main Results:
- Coarse stereopsis accuracy showed a slight decrease with increasing disparity but no age-related differences.
- In the fine disparity range, adult accuracy was consistent, while children's accuracy improved with disparity.
- Children across all ages demonstrated immature performance at the smallest fine disparities tested.
Conclusions:
- Coarse stereopsis appears mature by age 4.
- Fine stereopsis, particularly for small disparities, shows continued maturation throughout the school-age years.
- Age-related differences in stereoscopic depth perception are evident in the fine, but not coarse, disparity ranges.
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