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    1. Non-Factory
    2. Scientific and Industrial Research

    Letter reversal

    July 1, 1999
    I just read John Haystead`s article "Researchers explore vision stimulator for restoring eyesight" in June Vision Systems Design (p. 31). In figure 1 on page 32, the letter "E" is shown reversed. It should have been upside down, or, more correctly, the reader would see a backwards letter "E" superimposed on the retinal surface. I`m assuming the "E" is in its normal upright position. Am I missing something?

    Letter reversal

    I just read John Haystead`s article "Researchers explore vision stimulator for restoring eyesight" in June Vision Systems Design (p. 31). In figure 1 on page 32, the letter "E" is shown reversed. It should have been upside down, or, more correctly, the reader would see a backwards letter "E" superimposed on the retinal surface. I`m assuming the "E" is in its normal upright position. Am I missing something?

    Kevin J. Mackie

    Symmons Industries Inc.

    Braintree, MA 02184

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