Scientific and Industrial Research

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?
July 1, 1999

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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