Color Vision and Color Blindness

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Color Vision and Color Blindness

• Jacqueline Anchondo
• Cluster 7 Stars, Sight and Science

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Outline

• What is color vision and color blindness?
• Color blindness tests
• How our results came out
• Conclusions

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Rod
Cone
Light
Optic nerve
Retina
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How we see colors
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Trichromatic Cone Mosaic Normal Color Vision
This is a image of the retina taken using
Adaptive Optics.
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Normal Color Vision

• Normal eye has S, M and L cones

Types of Colorblindness

• Protan
• Person missing L cones
• Deutan
• Person missing M cones
• Tritan
• Person missing S cones

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Color vision tests

• Tested the color vision of 14 subjects
• The following tests were conducted
• C-100
• Ishihara Plates
• AO HRR Plates
• D-15

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C-100
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ResultsC-100
Normal
R-G defect
-3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0
0.5 1.0 1.5 2.0
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Ishihara Plates
Deutan
Normal
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Ishihara Plates
Deutan
Normal
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Ishihara Results

• 112 subjects had normal results
• 2 subjects had a color defect

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AO-HRR
Low contrast
High contrast
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AO-HRR
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AO-HRR Results

• 10 subjects had normal results
• 2 subject had a color defect

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D-15
Normal
Reference Cap
Colorblind Protan
RG
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D-15 Results

• 13 subjects had normal results
• 1 subject had a color defect

Normal
Colorblind Protan
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Conclusions

• Do we have anyone who is colorblind?
• Two of the people tested had R-G color vision
  defects.
• Subject RG was diagnosed as a protan.

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Acknowledgements

• I would like to thank Jason Porter for giving his
  time to teach me what I needed to learn, and Gary
  Martindale for helping me get my work completed.
• Also
• -CfAO
• -Pascha
• This work has been supported in part or full by
  the National Science Foundation Science and
  Technology Center for Adaptive Optics, managed by
  the University of California at Santa Cruz under
  cooperative agreement No. AST-9876783