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Everyone should be able to see the “12” embedded among the colored dots. This first test is used to explain the procedure of the test to a subject.

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Presentation on theme: "Everyone should be able to see the “12” embedded among the colored dots. This first test is used to explain the procedure of the test to a subject."— Presentation transcript:

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2 Everyone should be able to see the “12” embedded among the colored dots. This first test is used to explain the procedure of the test to a subject.

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4 Normal subjects should see “8” while persons with red-green color blindness will see “3”.

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6 Normal: “5” Color blind: “2”

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8 Normal: “29” Color blind: “70”

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10 Normal “74” Color blind: “21”

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12 Normal:“7” Color blind: will decode this only with difficulty or not at all.

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14 Normal:“45” Color blind:will decode this only with difficulty or not at all.

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16 Normal: “2” Color blind: will not be able to decode

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18 Normal: will read this panel with difficulty or not at all Color blind: “2”

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20 Normal: most will read “16” Color blind: Most will not be able to decode

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22 Normal: can trace the winding line from “X” to “X” Color blind: Red-green color blind persons either cannot trace the line or trace a different line

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24 There are two major forms of red/green color blindness. Normal or slightly color blind persons can see a “35” in this illustration. Persons strongly affected by protan color blindness will see only a “5”, while those with strong deuteran color blindness will see only the “3”.

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26 Normal: “96” Protan color blind: “6” Dueteran color blind: “9”

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28 Normal: trace both lines Protan color blind: trace only the purple line Deuteran color blind: trace only the red line. Persons of each group who are only mildly affected may trace both lines, but only with difficulty.

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