Table 2.

Characteristics of checkerboard pattern and oddball stimuli for visual training (n = 6).

Case	Training eye(s)	Check size estimation (°)	Check size first vs. last training (°)	Check contrast first vs. last training (%)	Oddball size first vs. last training (°)
A1	OU	12.0	10→4	90→80	70→20
A2	OS	1.56	12→6	80→80	60→15
A3	OU	0.10	4→1	80→40	12→4
A4	OU	0.20	8→3	80→40	30→6
A5	OS	0.10	4→2	80→40	8→1
A6	OU	0.05	6→1	80→40	6→1

Check size estimation means that the check size was estimated based on the child’s VA value (Iyer et al., 2013). “Check size first vs. last training (°)” means the check sizes used at the start and the last sessions of training. The unit for check size was degree of visual angle. The size and contrast were gradually decreased as the performance of the participants improved. Shown here are only the first and the last values. Contrast for checkerboard pattern is defined as Michelson contrast, for which the formula is (I_max – I_min)/(I_max + I_min).