These cards have vertical and horizontal letters for phoria measurement, fused cross cylinder pattern to evaluate accommodative response, and letters with 40 cm Snellen equivalents and M notation.
Dimensions: 5.5 inches by 4.5 inches.
These cards have vertical and horizontal letters for phoria measurement, fused cross cylinder pattern to evaluate accommodative response, and letters with 40 cm Snellen equivalents and M notation.
Dimensions: 5.5 inches by 4.5 inches.