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Updated: Jul 5, 2026
05:14
Simulating the Mechanics of Lens Accommodation via a Manual Lens Stretcher
Published on: February 23, 2018
[Impact of short-term stopped-down spectacle wear on accommodation function]
Vestnik Oftalmologii
|May 21, 2008
Summary
Short-term spectacle wear minimally impacts accommodation in myopia patients. Studies show no significant changes in ocular accommodation expenditure, even with reduced spectacle aperture.
Area of Science:
- Ophthalmology
- Optometry
- Vision Science
Background:
- Myopic refraction affects a significant portion of the population.
- Accommodation function is crucial for clear vision at various distances.
- The impact of spectacle lens properties on accommodation requires further investigation.
Purpose of the Study:
- To assess the effect of short-term stopped-down spectacle wear on ocular accommodation in myopic patients.
- To quantify changes in accommodation expenditure index (AEI) under different viewing distances.
- To determine if reduced spectacle aperture influences accommodative response in myopia.
Main Methods:
- 32 patients with myopic refraction (1.25 to 5.25 diopters) participated.
- Monocular laser refractometry was performed at 5m, 1m, and 0.33m.
- Accommodation expenditure index was measured before and during spectacle wear with reduced aperture.
Main Results:
- A slight reduction (0.06 diopters) in AEI was observed at 0.33m.
- Greatest changes in dynamic refraction and AEI occurred at 1m, with an insignificant 0.21-diopter reduction.
- No considerable changes in accommodation expenditure were detected during short-term stopped-down spectacle wear.
Conclusions:
- Short-term wear of stopped-down spectacles does not significantly alter accommodation expenditure in individuals with myopia.
- The observed minor changes in AEI are not clinically significant.
- Further research may explore long-term effects or different populations.
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