An extreme case of lazy eye (amblyopia) can result in stereoblindness, which makes an individual unable to respond to binocular depth cues and forces them to rely heavily on monocular depth cues instead of experiencing a full appreciation of the three-dimensional nature of the world.

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- Also known as lazy eye
- When eyes are misaligned in the first few years of life, one eye becomes functionally blind
- Primary visual cortex surpasses information from one eye
- Can be treated with surgery on the eye muscles, eye training, or through use of eye patches


Amblyopia

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

OpenStax Psychology (2nd ed.) Textbook

Lazy Eye as a Cause of Stereoblindness

Neuroscientist Bruce Bridgeman, who was stereoblind from birth, suddenly gained the ability to perceive depth in 3-D for the first time in 2012. Experts hypothesize that this remarkable recovery was possible because a fleeting moment of binocular vision during his early development preserved the necessary neural cells. These cells, which respond to binocular cues, likely remained dormant until they were finally activated decades later.

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