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Spectral Filter Selection for Increasing Chromatic Diversity in CVD Subjects
Miguel Ángel Martínez-Domingo1, Eva M Valero1, Luis Gómez-Robledo1
1Department of Optics, University of Granada, 18071 Granada, Spain.
Sensors (Basel, Switzerland)
|April 9, 2020
Summary
Spectral filters do not significantly increase the number of discernible colors (NODC) for individuals with normal or color vision deficiency (CVD). Simulations indicate these filters do not aid CVD subjects in passing common color blindness tests.
Area of Science:
- Optics and Photonics
- Vision Science
- Computational Simulation
Background:
- Color vision deficiency (CVD) affects a significant portion of the population, impacting daily life.
- Specialized spectral filters are commercially available, claiming to enhance color perception for those with CVD.
- Understanding the efficacy of these filters requires rigorous scientific analysis.
Purpose of the Study:
- To computationally evaluate spectral filters for their ability to increase the number of discernible colors (NODC).
- To assess the impact of selected filters on color coordinates and performance in standard color blindness tests.
- To compare novel filters with existing commercial options like EnChroma and VINO.
Main Methods:
- Modeling spectral transmittances of selected filters.
- Simulating filter performance using spectral reflectances from hyperspectral cameras and spectrometers.
- Analyzing effects on color coordinates and simulating results for Ishihara and Farnsworth-Munsell 100 Hue (FM100) tests.
Main Results:
- The selected spectral filters showed no relevant increase in the number of discernible colors (NODC).
- Simulations demonstrated that none of the tested filters enabled color vision deficiency (CVD) subjects to pass the Ishihara or FM100 tests.
- Commercial filters from EnChroma and VINO were also evaluated and did not show significant improvements.
Conclusions:
- The use of tested color filters does not substantially improve color discrimination for individuals with normal or deficient color vision.
- Current spectral filters do not confer a perception similar to normal observers for individuals with CVD.
- Further research may be needed to develop effective interventions for color vision deficiency.
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