American Optical HRR Pseudoisochromatic Plates
For detecting, classifying, and estimating the degree of defective color vision
By LeGrand H. Hardy, M.D. Gertrude Rand, PH. D. M. Catherine Rittler, B. A.
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Test Plate 1:
Individuals with normal vision should read the letter "X".
Individuals with color deficiencies should read nothing. |
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Test Plate 2:
Individuals with normal vision should read the letter "O".
Individuals with color deficiencies should nothing. |
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Test Plate 3:
Individuals with normal vision should see a "triangle".
Individuals with color deficiencies should see nothing.
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Test Plate 4:
Individuals with normal vision should read the letter "X".
Individuals with color deficiencies should read nothing. |
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Test Plate 5:
Individuals with normal vision should read the letter "O".
Individuals with color deficiencies should read nothing. |
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Test Plate 6:
Individuals with normal vision should see a "triangle".
Individuals with color deficiencies should see nothing. |
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Test Plate 7:
Individuals with normal vision should read the letter "X".
Individuals with color deficiencies should read nothing. |
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