Dichoptic presentation

Dichoptic (from the Greek words δίχα dicha, meaning "in two," and ὀπτικός optikos, "relating to sight") is viewing a separate and independent field by each eye. In dichoptic presentation, stimulus A is presented to the left eye and a different stimulus B is presented to the right eye.

Dichoptic moving images and games

Dichoptic perceptual training has been tested in order to stimulate the simultaneous use of both eyes.[1] In recent years, efforts have been made to develop methods of perceptual learning in vision therapy for treating interocular suppression and improving binocular vision in patients with anisometropic or strabismic amblyopia.[2]

In these methods, data has been presented within a virtual reality environment, and has also been presented using a computer screen or handheld device[3][4] together with matched active or passive filter glasses for the user, which present a different image to each eye.

In order to balance the input of visual information from each eye to the brain, the data is presented in such a manner that the user needs to use both eyes to see the complete scene. Furthermore, the stimulus offered to the weaker eye may be stronger, for example with stronger contrast, than the stimulus for the stronger eye.

Some of these methods involve the use of dichoptic computer games (such as the game Tetris). A dichoptic presentation of popular movies has also been proposed.[1][5]

See also
  • Cheiroscope

References
  1. Tailor, Vijay; Ludden, Siobhan; Bossi, Manuela; Bunce, Catey; Greenwood, John A.; Dahlmann-Noor, Annegret (2022-02-07). "Binocular versus standard occlusion or blurring treatment for unilateral amblyopia in children aged three to eight years". The Cochrane Database of Systematic Reviews. 2 (3): CD011347. doi:10.1002/14651858.CD011347.pub3. ISSN 1469-493X. PMC 8819728. PMID 35129211.
  2. Levi DM, Knill DC, Bavelier D (2015). "Stereopsis and amblyopia: A mini-review". Vision Research (Review). 114: 17–30. doi:10.1016/j.visres.2015.01.002. PMC 4519435. PMID 25637854.
  3. Hess RF, Thompson B, Black JM, Machara G, Zhang P, Bobier WR, Cooperstock J (2012). "An iPod treatment of amblyopia: an updated binocular approach". Optometry. 83 (2): 87–94. PMID 23231369.
  4. Hess RF, Mansouri B, Thompson B (2011). "Restoration of binocular vision in amblyopia". Strabismus. 19 (3): 110–8. doi:10.3109/09273972.2011.600418. PMID 21870914. S2CID 29209822.
  5. Li SL, Reynaud A, Hess RF, Wang YZ, Jost RM, Morale SE, De La Cruz A, Dao L, Stager D, Birch EE (2015). "Dichoptic movie viewing treats childhood amblyopia". Journal of AAPOS. 19 (5): 401–5. doi:10.1016/j.jaapos.2015.08.003. PMC 4659348. PMID 26486019.

Further references
  • Dictionary of Optometry and Visual Science, 7th edition. (2009)
  • Goldstein, E. B. (1989). Sensation and Perception. 3rd edition. ISBN 0-534-09672-7
  • The Chambers Dictionary. (1993).
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