Diane Serex-Dougan, OD, FCOVD | Behavioral Optometry | Optometric Vision Therapy | Maryland - From 2-D to 3-D Sight: How One Scientist Learned to See

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From 2-D to 3-D Sight: How One Scientist Learned to See

August 4, 2009, Article from Scientific American

- Sue Barry discusses what it's like to live in a 2-D world and explains how she learned to see in stereo

Sue Barry is a neuroscientist at Mount Holyoke College. She's also the author of the newly released book Fixing My Gaze, which tells the story of how Barry, at the age of 48, finally learned to see in 3-D. Mind Matters editor Jonah Lehrer chats with Barry about what a flat world looks like and what her own experience can teach us about brain plasticity and education.

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The key to 3-D vision

A visual impairment that condemns children to see in only two dimensions can go unrecognized for years and be mistaken for stigmatized disorders.

LA Times
By Susan R. Barry
June 22, 2009

I was 20 years old and a college student before I learned that I did not see the world like everyone else. I had been cross-eyed as a baby, but three childhood surgeries made my eyes look straight. Because my eyes looked normal, I assumed I saw normally too. But, in fact, I was stereoblind -- unable to see in three dimensions.,

That means I could not see the volumes of space between objects. Instead, things in depth appeared piled one on top of another, making me feel nervous and confused in cluttered environments. As a child, I didn't understand why my friends were so entertained when they looked through a View-Master. I didn't see Disney characters or Superman popping out at me. All I saw was a flat image.

When I got older, my gaze -- particularly at a distance -- was jittery, making it difficult to read signs while driving. I was always disoriented and easily lost.

The biggest effect of my vision was on my performance in school. I had trouble learning to read and did poorly on standardized tests. These problems were blamed not on my vision but on a lack of intelligence, and I was put in a class with other problem children.