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Related Experiment Videos

Interrupted reflection fibre optic communication device for the severely disabled.

K T Grattan, A W Palmer

    Journal of Biomedical Engineering
    |October 1, 1984
    PubMed
    Summary

    This study introduces an eye-blink detection system using optic fibers to differentiate between open and closed eyelids. This technology can control external devices and suppress involuntary blinks, offering new assistive possibilities.

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    Area of Science:

    • Biomedical Engineering
    • Ophthalmology
    • Human-Computer Interaction

    Background:

    • Blink detection is crucial for various applications, including assistive technology and neurological monitoring.
    • Existing methods for blink detection can be invasive or lack precision.
    • The optical properties of the eye change significantly between open and closed states.

    Purpose of the Study:

    • To develop a non-invasive system for detecting eye blinks.
    • To explore the potential of using optical differences for blink detection.
    • To create a controllable output based on detected blinks.

    Main Methods:

    • An optic fiber attached to a spectacle frame detects differences in light reflection between an open eye and a closed eyelid.
    • Electronic processing converts the optical difference into a pulse train.
    • The pulse train can be interpreted subjectively or used to control external devices.

    Main Results:

    • The system successfully differentiates between open and closed eye states based on reflected light.
    • A pulse train is generated, allowing for real-time interpretation or device control.
    • The technique shows potential for suppressing involuntary blinks.

    Conclusions:

    • This novel optical technique provides a sensitive and non-invasive method for eye blink detection.
    • The system offers versatile applications, from subjective feedback to physical device control.
    • Further development could lead to advanced assistive technologies and improved blink management.

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