How Vision-impaired People Gaze to Hit a Ball
Author Information
Author(s): Ward Nieboer, Carin M. Svensen, Kjell van Paridon, Debbie Van Biesen, David L. Mann
Primary Institution: Vrije Universiteit Amsterdam
Hypothesis
The study aimed to uncover the gaze patterns used by individuals with vision impairment when hitting a moving ball.
Conclusion
Tennis players with vision impairment adopt a variety of impairment-specific adaptations to their gaze-tracking strategies, enabling them to successfully hit an approaching tennis ball despite severe vision impairments.
Supporting Evidence
- Participants used a variety of different strategies to track the ball visually, dictated largely by the nature of their impairment rather than its severity.
- Cluster analysis showed distinct strategies based on the type of vision impairment.
- Those with peripheral vision loss foveated the ball closely and avoided predictive eye movements.
Takeaway
People with vision problems have different ways of looking at a ball when playing tennis, and they find smart ways to hit it even if they can't see well.
Methodology
Nineteen tennis players with vision impairment were recruited, and their eye and head movements were tracked while they returned tennis serves.
Potential Biases
Calibration issues may have biased the sample, as participants with certain conditions were less likely to be included.
Limitations
The study faced challenges in calibrating the eye tracker for participants with certain ocular conditions, leading to the exclusion of some data.
Participant Demographics
The final sample comprised 11 participants (5 females) with an average age of 46.3 years.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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