An evaluation of acuity card procedures

1. Acuity cards are now commonly used to assess the grating acuity of infants, but the procedures vary across clinical settings. To evaluate differences between various acuity card procedures and a more objective preferential looking test of acuity, we compared each of three acuity card procedures with a preferential looking (PL) staircase procedure in toddlers with ocular disorders. 2. In Expt 1, we used PL and two or three variations of the …