The Mind's Eye by Oliver Sacks

Author:Oliver Sacks [Sacks, Oliver]
Language: eng
Format: epub, mobi
ISBN: 978-0-307-59455-6
Publisher: Knopf Doubleday Publishing Group
Published: 2010-10-25T16:00:00+00:00

She consulted Dr. Theresa Ruggiero, a developmental optometrist, who found that Sue’s eyes were developing various forms of imbalance—this sometimes happens after surgery for strabismus—so that the reasonable vision she had enjoyed for decades was now being undermined.

Dr. Ruggiero confirmed that I saw the world monocularly. I only used two eyes together when looking within two inches of my face. She told me that I consistently misjudged the location of objects when viewing them solely with my left eye. Most importantly, she discovered that my two eyes were misaligned vertically. The visual field of my left eye was about three degrees above that of my right. Dr. Ruggiero placed a prism in front of my right lens that shifted the entire visual field of the right eye upward.… Without the prism, I had trouble reading the eye chart on a computer screen across the room because the letters appeared to shimmer. With the prism, the shimmer was greatly reduced.

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