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Related Experiment Video

Updated: Apr 19, 2026

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
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Visual field testing on the Envision head-mounted perimeter with and without gaming elements.

Emmanouil Tsamis, Iván Marín-Franch, William H Swanson

    Ophthalmology. Glaucoma
    |April 17, 2026
    PubMed
    Summary
    This summary is machine-generated.

    The new Envision virtual reality (VR) perimeter, including its gaming-based test (ENVg), shows high repeatability and accuracy comparable to the Humphrey Field Analyzer (HFA) for visual field testing.

    Keywords:
    gamificationglaucomahead-mounted perimetryperimetry

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    Area of Science:

    • Ophthalmology
    • Medical Technology
    • Visual Science

    Background:

    • Visual field testing is crucial for diagnosing and monitoring glaucoma.
    • Traditional perimetry devices like the Humphrey Field Analyzer (HFA) can be time-consuming and may lead to patient fatigue.
    • Novel approaches using virtual reality (VR) offer potential improvements in patient experience and efficiency.

    Purpose of the Study:

    • To evaluate the Envision VR perimeter's test-retest variability and compare its performance against the HFA.
    • To assess the duration and patient preferences for two Envision test modes: standard (ENV) and gaming-based (ENVg).

    Main Methods:

    • A two-part clinical trial involving 30 healthy controls and 30 glaucoma patients.
    • Participants underwent testing with Envision (ENV and ENVg) and HFA.
    • Test-retest variability, concordance, test duration, and patient preferences were analyzed.

    Main Results:

    • Envision (ENV and ENVg) demonstrated low test-retest variability, comparable to the HFA.
    • Visual field results (TD/MD values) were similar across Envision and HFA.
    • The ENVg mode was strongly preferred by patients for its engagement and shorter duration.

    Conclusions:

    • The Envision VR perimeter is a repeatable and accurate alternative to the HFA for visual field testing.
    • The ENVg mode shows potential for enhancing patient compliance and engagement.
    • Envision's portability and consistent test duration make it suitable for diverse clinical settings.