Apparatus and method for establishing and/or improving binocular vision

An apparatus for establishing and/or improving binocular vision of a patient, wherein said apparatus is adapted to provide perceptual motor learning for the visual system of the patient having a first eye and a second eye and a binocular vision disorder, said apparatus comprising:

• a first display unit configured for providing a first manipulation of at least one first vision parameter of a visual presentation directed towards said first eye,
• a second display unit configured for providing a second manipulation of at least one second vision parameter of a visual presentation directed towards said second eye, and
• a processing unit configured to:
• provide or determine a boundary value for said first and/or second vision parameters for said first and/or second manipulation of said first and/or second vision parameter, where binocular vision disappears for said patient at said boundary value and
• control said first display unit and/or second display unit to provide an entire manipulation including an oscillation or a fluctuation of said first and/or second vision parameter only within a first range, said first range having a maximum value that is less than said boundary value and the ratio between said maximum value of said first range and said boundary value is in the interval from 0.6 to 0.95.