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Immediate Effects of Vergence Exercises Using Automatic Dual Rotational Risley Prisms on Accommodative Lag and
Shuan-Yu Huang1, Hui-Rong Su2, Yun-Shao Hu3
1Department of Optometry, Central Taiwan University of Science and Technology, Taichung, 402, Taiwan.
Ophthalmology and Therapy
|October 18, 2023
Summary
Novel automatic dual rotational Risley prisms (ADRRPs) effectively improve accommodative lag and facility in adults with myopia. These vergence exercises offer a new tool for myopia management and visual training.
Area of Science:
- Ophthalmology
- Optometry
- Vision Science
Background:
- Myopia management often involves addressing accommodative function.
- Accommodative lag and facility are key visual parameters affected in myopia.
Purpose of the Study:
- To evaluate novel automatic dual rotational Risley prisms (ADRRPs) as a vergence exercise tool.
- To assess the impact of ADRRPs on accommodative lag and accommodative facility in adults with myopia.
Main Methods:
- Adults with myopia underwent vergence exercises using ADRRPs (treatment) or plano lenses (control).
- Measurements included accommodative lag via open-field autorefraction and accommodative facility using an accommodative flipper.
- Testing was conducted at near (0.4 m) and distance (6.0 m) viewing distances.
Main Results:
- The treatment group showed significant improvement in accommodative lag at near (p < 0.001).
- A significant improvement in accommodative facility was observed post-exercise (p < 0.01).
- No significant changes were noted in the control group.
Conclusions:
- ADRRPs utilized in vergence exercises can enhance accommodative lag, facility, and relaxation in myopic adults.
- Further investigation is warranted to determine the long-term efficacy of ADRRPs for myopia.
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