Train and test 'Kinetic Visual Acuity' by reading the figure on a rotating hex-head pillar that dashes out from the screen interior. The passing speed and the rotational speed of a hex-head pillar change depending on the difficulty level. Test Mode : Each difficulty level is executed 4 times, and the score is calculated. Training Mode : You can arbitrarily set the difficulty level. Visual Acuity is classified into KVA,DVA and SVA. KVA: direction of depth DVA: left-right SVA: static In 'Kinetic Vision Acuity', you can train and test both KVA and DVA.