Table 2.

Parameters that could be modified according to the type of stimulus in vision training for amblyopia.

	Spatial and Temporal Frequency	Contrast Sensitivity and Luminance	First- and Second-Order	Color	Figure–Ground Segregation	Signal–Noise	Motion
Letter optotypes	Yes	Yes	Yes	No	Yes	Yes	Yes
Gabor´s patch	Yes	Yes	No	No	Yes	Yes	Yes
Vernier´s stimulus	Only temporal frequency	Yes	No	No	No	No	Yes
RDS	No	Only luminance	Yes	Yes	No	Yes	Yes

In “Color” column, “Yes” means color stimulus and “No” means achromatic. RDS: random-dot stereogram.