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Normal Vision: Will see 42
Protanopia: Will see a 2
Protanomaly: Will see a 2 and may faintly see a 4
 
Normal Vision: Will be able to trace the purple and red line
Protanopia: Will be able to trace the purple line
Protanomaly: Will be able to trace the purple line and may be able to trace the red line with difficulty.
 

(Kiel, 2013)

(Kiel, 2013)

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