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Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
Published on: April 11, 2025
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Exploring the effects of degraded vision on sensorimotor performance
William E A Sheppard1, Polly Dickerson2, Rigmor C Baraas3
1School of Psychology, University of Leeds, Leeds, West Yorkshire, United Kingdom.
Plos One
|November 8, 2021
Summary
Unilateral visual loss significantly impacts sensorimotor skills, affecting daily activities. This study quantifies these effects, highlighting the importance of binocular vision, especially for older adults.
Area of Science:
- Ophthalmology
- Neuroscience
- Human Factors Engineering
Background:
- Unilateral degraded vision affects many individuals due to developmental or age-related disorders.
- Sensorimotor limitations from visual deficits can significantly restrict daily activities and quality of life.
- Understanding the link between visual deficits and sensorimotor performance is crucial for assessing ophthalmic conditions' functional impact.
Purpose of the Study:
- To investigate the effect of unilaterally degraded vision on sensorimotor performance.
- To determine the functional implications of unilateral visual deficits.
- To explore the relationship between visual impairment and sensorimotor capabilities.
Main Methods:
- Experiment 1: Simulated unilateral and bilateral visual deficits using Bangerter filters in 30 participants across water pouring, peg placing, and aiming tasks.
- Experiment 2: Assessed the impact of monocular viewing on sensorimotor interactions in 74 participants using kinematic measures in aiming, tracking, and steering tasks.
- Utilized Bangerter filters and monocular viewing to simulate visual sensitivity decrements.
Main Results:
- Experiment 1 demonstrated decreased task performance with simulated unilateral and bilateral visual loss, confirming functional implications.
- Experiment 2 showed that kinematic measures were affected by monocular viewing in aiming and steering tasks, which require rapid visual feedback.
- Monocular viewing impacted sensorimotor performance in tasks reliant on online visual processing.
Conclusions:
- Unilateral visual loss demonstrably impairs sensorimotor performance.
- Binocular vision is critical, particularly for older adults, as sensorimotor deficits may necessitate assisted living.
- Rigorous kinematic analysis is needed to quantify the functional impact of unilateral vision degradation and treatment benefits.
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