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Updated: Jul 29, 2026
05:14
Simulating the Mechanics of Lens Accommodation via a Manual Lens Stretcher
Published on: February 23, 2018
Facility of accommodation in myopia
1Department of Optometry and Ophthalmic Dispensing, Anglia Polytechnic University, Cambridge, UK. D.O'leary@anglia.ac.uk
Summary
Myopic students exhibit reduced distance accommodation facility compared to emmetropic students. This study highlights differences in visual accommodation responses between these groups.
Area of Science:
- Ophthalmology
- Optometry
- Vision Science
Background:
- Myopia is often associated with altered accommodative system function.
- Understanding accommodation facility is crucial for myopia management.
Purpose of the Study:
- To investigate and compare accommodation facility characteristics in myopic and emmetropic students.
- To identify specific differences in distance and near accommodation responses.
Main Methods:
- Accommodation facility was measured in 79 students (37 myopes, 42 emmetropes) aged 18-27.
- Distance and near accommodation response times were assessed using specific lens pairs over a 1-minute period.
- Masked procedures were employed for subject selection and data analysis.
Main Results:
- Mean distance accommodation facility was significantly lower in myopes (9.7 cpm) versus emmetropes (15.6 cpm; p < 0.005).
- No significant differences were found in near accommodation facility between myopic and emmetropic groups.
- Delayed positive accommodation response time for distance vision (>4s) occurred in 45% of myopes compared to 9% of emmetropes.
Conclusions:
- Myopes demonstrate abnormal accommodation responses, particularly to blur.
- Reduced distance accommodation facility is a common characteristic in myopia.
- Near accommodation facility does not significantly differ between myopic and emmetropic individuals.
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