Table 3.

Estimated color detection limit

Visual angle (degrees)
Blue 1.18 (1.06-1.29) 
Green 1.53 (1.24-1.78) 
Red 0.96 (0.77-1.11) 
Visual angle (degrees)
Blue 1.18 (1.06-1.29) 
Green 1.53 (1.24-1.78) 
Red 0.96 (0.77-1.11) 

Estimated visual angles (95% confidence limits in parentheses) that provide 60% correct choice for three colors.

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