20 / NAN
20 / NAN
20 / NAN

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Distance between letter and eye (meters)
Height of largest letter (centimeters)

For each letter the corresponding vision score is shown below

Value is calculated using 20 x arctan("Height of letter"/(2 x "Distance")) x 60 x 180 / pi

Using Oprician Sans font, licenced under SIL OPEN FONT LICENSE Version 1.1