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Simulating visibility under reduced acuity and contrast sensitivity.

William B Thompson, Gordon E Legge, Daniel J Kersten

    Journal of the Optical Society of America. A, Optics, Image Science, and Vision
    |April 5, 2017
    PubMed
    Summary
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    This study introduces a new simulation method for architects and lighting designers to assess how reduced vision affects space accessibility. The simulation uses standard clinical measures of acuity and contrast sensitivity to predict visibility challenges for navigation.

    Area of Science:

    • Architecture
    • Lighting Design
    • Vision Science

    Background:

    • Designing accessible spaces for individuals with low vision presents challenges due to the complexity of architectural environments.
    • Assessing the visibility of navigation cues and mobility hazards is crucial for inclusive architectural design.

    Purpose of the Study:

    • To present a novel simulation method for evaluating the impact of reduced visual acuity and contrast sensitivity on space visibility.
    • To bridge the gap between clinical vision assessment and architectural design practices.

    Main Methods:

    • Development of a simulation tool that parameterizes visual performance using standard clinical measures.
    • Integration of acuity and contrast sensitivity metrics into an architectural design workflow.
    • Validation of the simulation through a letter-recognition task.

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    Main Results:

    • The simulation effectively models the effects of reduced vision on the perception of architectural spaces.
    • Standard clinical vision measures were successfully translated into parameters for architectural simulations.
    • The validation task confirmed the simulation's ability to represent visibility changes.

    Conclusions:

    • The proposed method offers a practical approach for architects and lighting designers to incorporate low vision considerations early in the design process.
    • This simulation tool can enhance the creation of more navigable and accessible built environments for people with visual impairments.
    • Further research can refine the simulation's predictive accuracy and expand its application in universal design.