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Related Experiment Video

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Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
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Differences in vision performance in different scenarios and implications for design.

Joy Goodman-Deane1, Sam Waller1, Keziah Latham2

  • 1Engineering Design Centre, Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, Cambridgeshire, UK.

Applied Ergonomics
|March 21, 2016
PubMed
Summary

Designers need better visual ability data for accessibility. This study provides UK data on vision measures relevant to product design, recommending optimal text sizes for various viewing conditions.

Keywords:
Inclusive designProduct designText sizeVisual ability

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Area of Science:

  • Human-Computer Interaction
  • Accessibility Design
  • Vision Science

Background:

  • Current population data on visual abilities often uses clinical measures not directly applicable to everyday product design.
  • Accessible design requires relevant data on visual performance in real-world scenarios.

Purpose of the Study:

  • To present pilot survey data on vision measures relevant to product design.
  • To provide recommendations for relative text sizes based on user visual needs.
  • To bridge the gap between clinical vision data and practical design requirements.

Main Methods:

  • A pilot survey of 362 participants in the United Kingdom was conducted.
  • A range of vision measures relevant to product design were assessed.
  • Data was analyzed to compare different vision measures and inform text size recommendations.

Main Results:

  • Text needs to be 17-18% larger for comfortable viewing compared to perceived threshold viewing.
  • An additional 20% increase in text size is recommended when users employ their everyday vision correction rather than specialized reading aids.
  • Significant variations in visual abilities relevant to design were observed.

Conclusions:

  • Accessible product design necessitates population data reflecting everyday visual conditions.
  • Specific recommendations for text scaling are provided to enhance readability for diverse user groups.
  • Further research into vision measures for accessible design is warranted.