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Related Experiment Video

Updated: Jan 25, 2026

Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity
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Adaptive eyeglasses for presbyopia correction: an original variable-focus technology.

Jessica Jarosz, Norbert Molliex, Guilhem Chenon

    Optics Express
    |May 5, 2019
    PubMed
    Summary
    This summary is machine-generated.

    We developed a novel fluid-filled lens technology for adaptive eyeglasses that corrects presbyopia. This innovative design offers comfortable, aesthetically pleasing vision correction with automatic focusing capabilities.

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    Area of Science:

    • Optics and Photonics
    • Biomedical Engineering
    • Materials Science

    Background:

    • Presbyopia, an age-related loss of accommodation, affects near vision clarity.
    • Current corrective solutions often involve multifocal lenses or refractive surgery, each with limitations.
    • There is a need for adaptive eyewear that provides dynamic focus correction while maintaining aesthetic appeal.

    Purpose of the Study:

    • To introduce a novel variable-focus lens technology for presbyopia-correcting adaptive eyeglasses.
    • To design a system prioritizing visual comfort and aesthetic integration.
    • To demonstrate the feasibility and performance of a prototype system.

    Main Methods:

    • Development of a fluid-filled variable-focus lens utilizing two immiscible liquids and an ultra-thin membrane.
    • Integration of a low-power, high-volume microfluidic actuator for lens shape control.
    • Incorporation of a distance-sensing system for automatic focusing adjustment.

    Main Results:

    • The prototype achieved a 3-diopter power variation across a 20mm variable zone.
    • Actuation pressures remained low, at approximately 200 Pa.
    • Preliminary optical quality analysis indicated spatial resolution exceeding standard eye chart requirements.
    • Optimal configuration demonstrated a peak power consumption of around 25 mW for the opto-fluidic engine.

    Conclusions:

    • The proposed fluid-filled variable-focus lens technology offers a promising solution for presbyopia correction in adaptive eyeglasses.
    • The system demonstrates effective power variation, low actuation pressure, and good optical quality.
    • Further development can enhance optics, aesthetics, and portability, with compatibility with standard base curves noted.