DiagnosticGame app:  C Visual Acuity

Self-Testing Binary Choice: PRESS Yes.. When C's are oriented the same; PRESS No.. When C's are oriented differently. Simple, Pre-verbal, any language.

Tutorial slideshow

STARTING SCREEN
STARTING SCREEN

Choose "C" to Use Landolt C Letters

Are the "Cs" the SAME? YES
Are the "Cs" the SAME? YES

The Opening in TOP C is in the same location as the Opening in the BOTTOM C.

Are the "Cs" the SAME? NO
Are the "Cs" the SAME? NO

The opening in the Cs are in DIFFERENT Positions.