Lea Gratings® Instructions                                                                      View Shopping Cart

Figure 1

Different ways to present Lea Gratings® Test to children. When the grating and the Grey surface are moved in opposite directions (A-C), motion perception is an additional factor in perception of the grating. When the grating and the gray surface are kept motionless (D) in front of the child, motion perception does not play a role.

Lea Gratings® Test Instructions

Lea Gratings® Test