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Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
Published on: July 21, 2020
Visual fatigue and discomfort after stereoscopic display viewing
Li Zhang1, Ya-Qin Zhang, Jing-Shang Zhang
1Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital University of Medical Science, Beijing, China.
Acta Ophthalmologica
|November 21, 2012
Summary
Pattern retard (polarized) 3D displays cause less visual fatigue and discomfort than shutter glasses 3D displays. Objective measures of accommodation and convergence also favored polarized displays, indicating better visual performance.
Area of Science:
- Ophthalmology
- Human-Computer Interaction
- Visual Display Technology
Background:
- Recent advancements have introduced various stereoscopic video displays.
- Understanding the visual impact of these technologies is crucial for user comfort and safety.
Purpose of the Study:
- To compare visual fatigue and discomfort between two stereoscopic display technologies: pattern retard (polarized) and shutter glasses.
- To objectively measure the effects on accommodation and convergence.
Main Methods:
- An observational cross-over study involving 30 participants (aged 20-30).
- Participants viewed videos on both pattern retard and shutter glasses 3D displays over two days.
- Standardized interviews, functional examinations, and subjective visual fatigue scores were collected.
Main Results:
- Shutter glasses displays led to significantly higher visual fatigue scores compared to pattern retard displays.
- Objective measurements showed significantly poorer accommodation and convergence function after viewing shutter glasses displays.
- Specific metrics like accommodative magnitude, facility, and near-point convergence were negatively impacted by shutter glasses.
Conclusions:
- Pattern retard (polarized) 3D displays induce significantly less visual fatigue than shutter glasses 3D displays.
- Polarized displays also demonstrate superior objective measures of accommodation and convergence, suggesting better visual ergonomics.
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