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Binocular single vision

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BSV is the ability to use both eyes to create a single, common perception. It can be broken down into three component parts:

  • simultaneous perception - with each eye seeing the image at the same time
  • fusion - where the images from each eye are fused to give a single image at the visual cortex
  • stereopsis - where fusion of the slightly different images from each eye are interpreted to allow a perception of depth

Note that BSV breaks down if there is a difference in image sizes of 8% or more, which may be caused by, for example, spectacle lenses that are 3 - 4 dioptres different.

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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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