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Related Experiment Videos

Development of variable- focus lenses and a new refractor.

L W Alvarez

    Journal of the American Optometric Association
    |January 1, 1978
    PubMed
    Summary

    The development of variable-focus and astigmatic lenses, alongside remote refraction techniques, paved the way for the innovative Vision Analyzer. This new subjective refractor offers a novel design and rapid operation for vision testing.

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    Area of Science:

    • Ophthalmology and optical engineering.

    Background:

    • Historical development of optical correction technologies.
    • Evolution of subjective refraction methods in optometry.

    Observation:

    • The emergence of variable-focus and variable-power astigmatic lenses.
    • The conceptualization of remote refraction and "phantom lenses."

    Findings:

    • These advancements provided the foundation for a new subjective refractor.
    • The Vision Analyzer, a novel device, is detailed with its unique design and operational speed.

    Implications:

    • Potential for improved efficiency and accuracy in vision testing.
    • Advancements in ophthalmic instrumentation and patient eye examinations.

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