Eye Precision Angle Calculator
Calculate the angle of eye movement between stimulus dots. Enter your screen details or measure the dot positions directly. The subject is assumed to be centred between each pair of dots.
Enter screen diagonal & select aspect ratio
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Measure the distance between the two outer dots (left & right) directly on screen
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Results
Outer dots — left & right
Total Eye Movement
—°
Full arc, dot to dot
Half Angle
—°
Centre gaze to one dot
Dot Span
—
Physical distance
Inner dots — 30% & 70%
Total Eye Movement
—°
Full arc, dot to dot
Half Angle
—°
Centre gaze to one dot
Dot Span
—
Physical distance
Geometry Diagram