v1
Vernier Acuity
Tell which way the top line is nudged as the offset shrinks. Measures hyperacuity — finer than 20/20 vision.
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Tell which way the top line is nudged as the offset shrinks. Measures hyperacuity — finer than 20/20 vision.
No attempts yet — play to set your first score.
↵ to start · Esc to exit