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Optimal reading speed in simulated cataract: development of a potential vision test
B Patel1, D B Elliott, D Whitaker
1Department of Optometry, University of Bradford, UK.
Summary
Optimal reading speed remains unchanged with simulated cataracts, suggesting its potential as a vision test. Reversing contrast improved reading performance, warranting further investigation in cataract and ARMD patients.
Area of Science:
- Ophthalmology
- Vision Science
- Optometry
Background:
- Optimal reading speed is reportedly unaffected by cataracts but reduced by age-related macular disease (ARMD).
- This observation suggests potential for reading speed tests in assessing vision post-cataract surgery.
Purpose of the Study:
- To investigate if optimal reading speed can serve as a vision test.
- To assess the impact of simulated cataracts on reading speed and related visual parameters.
Main Methods:
- Twenty young subjects participated, with and without simulated dense cataracts.
- Bailey-Lovie word charts were used for reading aloud tests.
- Critical print size, optimal reading speed, and word acuity were calculated.
Main Results:
- Simulated cataracts decreased word acuity and increased critical print size.
- Optimal reading speed was not significantly affected by the simulated cataract.
- Reversed contrast polarity improved word acuity and optimal reading speed in the presence of simulated cataracts.
Conclusions:
- Optimal reading speed may be a viable metric for a potential vision test.
- Further research involving patients with cataracts and ARMD is necessary to validate these findings.