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Updated: Jan 1, 2026
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A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
Published on: February 11, 2014
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Refinement and preliminary evaluation of two tablet-based tests of real-world visual function
Pete R Jones1, Iris Tigchelaar2,3,4, Giorgia Demaria2,5
1Division of Optometry and Visual Science, School of Health Sciences, City, University of London, London, UK.
Summary
Two new tablet tests for visual function are quick, easy, and reliable for normally-sighted adults. These tests assess face discrimination and visual search, offering valuable data for real-world vision assessment.
Area of Science:
- Ophthalmology
- Optometry
- Human Visual Function
Background:
- Tablet-based assessments offer a novel approach to evaluating visual function.
- Standardized tests are needed to measure real-world visual capabilities accurately.
- Freely available digital tools can improve accessibility in vision testing.
Purpose of the Study:
- To describe, refine, and evaluate two tablet-based tests for real-world visual function.
- To provide normative control data for these tests in young, normally-sighted adults.
- To assess the repeatability and efficiency of tablet-based visual assessments.
Main Methods:
- Fifty normally-sighted adults (18-40 years) completed two tablet-based tests: face discrimination and visual search.
- Each test was administered twice to assess test-retest repeatability.
- Post-hoc analyses determined optimal trial numbers and population limits for normative data.
Main Results:
- Both tests achieved stable performance estimates in approximately 20 trials (~1-4 minutes).
- Test-retest repeatability (CoR95) was 0.27 d for faces and 0.84 s for visual search.
- High task comprehension (9.6-9.7/10) and 100% completion rates were reported.
Conclusions:
- Tablet-based tests provide simple, quick, and administrable measures of visual function in young adults.
- These digital tools show potential for clinical use, complementing patient-reported outcomes.
- Further research is needed to validate these tests in diverse populations, including older adults and those with visual impairments.
