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Using a Virtual Reality Walking Simulator to Investigate Pedestrian Behavior
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Estimation of Spherical Refractive Errors Using Virtual Reality Headset.

Ashish Goyal, Ajit Bopardikar, Vijay Narayan Tiwari

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |November 17, 2018
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    Summary
    This summary is machine-generated.

    This study presents a low-cost virtual reality system for accurately measuring refractive errors. The portable device offers a accessible solution for widespread vision screening and eye health care.

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    Area of Science:

    • Ophthalmology
    • Optometry
    • Biomedical Engineering

    Background:

    • Refractive errors are common visual impairments requiring correction with lenses.
    • Current diagnostic devices are expensive, bulky, and require trained professionals, limiting accessibility.
    • Accessible eye-health solutions are needed to overcome these barriers.

    Purpose of the Study:

    • To develop a portable and affordable system for subjective refractive error estimation.
    • To leverage commercial virtual reality (VR) technology with minimal hardware additions.
    • To create an accessible tool for vision screening and refractive error assessment.

    Main Methods:

    • A modified VR headset with a reflecting mirror projects optotypes.
    • Programmable focal planes simulate varying distances for eye examination.
    • An interactive interface collects user feedback for automated refractive error calculation.

    Main Results:

    • The system accurately estimates accommodation range and spherical refractive errors.
    • Validation through a user trial study demonstrated strong agreement with clinical subjective refraction.
    • The proposed setup offers a precise and reliable method for refractive error measurement.

    Conclusions:

    • The developed VR-based system provides a cost-effective and portable solution for refractive error assessment.
    • This technology can significantly improve the outreach of eye-health care services.
    • The system demonstrates clinical validity and potential for widespread adoption.