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Related Experiment Video

Updated: Apr 25, 2026

Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity
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Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity

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Off-axis aberration reduction in peripheral defocus spectacles using a moiré superlattice-based microlens array.

Honglin Chen, Shuqian Chen, Hao Zhang

    Applied Optics
    |April 24, 2026
    PubMed
    Summary

    This study introduces a novel microlens array design to reduce astigmatism and enhance peripheral retinal image quality. Simulations show improved optical performance compared to existing defocus incorporated multiple segments (DIMS) lenses.

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    Area of Science:

    • Ophthalmology and Optometry
    • Optical Engineering
    • Biomedical Engineering

    Background:

    • Peripheral retinal image quality is often degraded by off-axis aberrations.
    • Spectacle lens-induced aberrations are a key factor affecting visual performance.
    • Controlling these aberrations is crucial for improving vision correction.

    Purpose of the Study:

    • To propose and evaluate a novel microlens array design for reducing induced astigmatism.
    • To enhance peripheral retinal image quality in spectacle lenses.
    • To maintain therapeutic myopic defocus for myopia control.

    Main Methods:

    • A new microlens array design inspired by moiré superlattices was developed.
    • The Atchison eye model was used for optical simulations.
    • Performance was compared against Defocus Incorporated Multiple Segments (DIMS) lenses.

    Main Results:

    • The proposed design reduced maximum vectorial astigmatism (C') from -5.63D to -4.42D under static conditions.
    • Simulations showed an elevated Modulation Transfer Function Acutance (MTFA) value by 0.155 at 20 cy/mm during 15° eye rotation compared to DIMS lenses.
    • Central C' was optimized from -3.77D to -2.52D at 25° eye rotation.

    Conclusions:

    • The novel microlens array design shows potential for reducing astigmatism and improving peripheral image quality.
    • This design offers advantages over current DIMS lenses in specific optical metrics.
    • Further research may lead to improved spectacle lens designs for myopia management.