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Relationship between visual skills and performance on saccadic eye movement testing
1The Ohio State University, College of Optometry, Columbus 43210, USA.
Summary
Visual difficulties, like poor stereoacuity, can impact saccadic eye movement test performance in young children. Children with visual deficits may perform worse on tests like the King-Devick saccade test.
Area of Science:
- Ophthalmology
- Developmental Neuroscience
- Pediatric Optometry
Background:
- Saccadic eye movements are crucial for visual processing and reading.
- The influence of specific visual skills on saccadic eye movement test performance remains largely unexamined in young children.
- Common clinical tests for saccadic eye movements include the New York State Optometric Association King-Devick (NYSOA K-D) and Developmental Eye Movement (DEM) tests.
Purpose of the Study:
- To investigate the relationship between visual skills and performance on the NYSOA K-D and DEM saccadic eye movement tests.
- To determine if visual deficits affect saccadic eye movement test outcomes in kindergartners and first graders.
Main Methods:
- A masked investigation was conducted on 181 children (mean age 6.25 years).
- Participants completed the NYSOA K-D and DEM tests.
- Visual skills were assessed using a Modified Clinical Technique (MCT) vision screening and a Randot stereoacuity test.
Main Results:
- Total errors on the NYSOA K-D were significantly associated with MCT screening referral (p=0.015) and stereoacuity worse than 100 seconds of arc (p=0.011).
- A trend suggested a link between DEM ratio and stereoacuity worse than 50 seconds of arc.
- In children who passed the MCT screening, stereoacuity was not significantly related to NYSOA K-D or DEM performance.
Conclusions:
- Visual difficulties, particularly deficits in stereoacuity, may negatively impact performance on the NYSOA K-D saccadic eye movement test in young children.
- These findings highlight the importance of considering overall visual function when interpreting saccadic eye movement test results in pediatric populations.