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    Area of Science:

    • Human-computer interaction
    • Display technology
    • Biomedical engineering

    Background:

    • 2-D/3-D switchable displays are prevalent but can cause visual fatigue.
    • Current 3-D display technologies lack ergonomic features for user comfort.
    • Reducing visual fatigue is crucial for enhancing the 3-D viewing experience.

    Purpose of the Study:

    • To propose a novel 2-D/3-D display autoadjustment system with biofeedback.
    • To investigate and quantify the relationship between blink rate and visual fatigue.
    • To reduce user visual fatigue during 3-D film viewing.

    Main Methods:

    • Developed a 2-D/3-D switchable display using liquid crystal barrier technology.
    • Designed a wearable electro-oculography (EOG) device to monitor blink rate.
    • Established an autoadjustment criterion based on blink rate-estimated visual fatigue.

    Main Results:

    • The proposed system effectively reduced visual fatigue in users watching 3-D films.
    • A quantifiable relationship between blink rate and visual fatigue state was established.
    • Biofeedback from EOG signals enabled adaptive display adjustments.

    Conclusions:

    • The novel autoadjustment system enhances 3-D display ergonomics.
    • Monitoring blink rate is a viable method for assessing visual fatigue.
    • This technology offers a human-care factor for improved 3-D viewing.