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The Eye Designed or Evolved?

Marc Surtees

Did the eye evolve from a simple layer of photo-sensitive cells into the eyes that we have today? Darwin remarked that ... "several facts make me suspect that any sensitive nerve may be rendered sensitive to light" ... but how do photo-sensitive cells work? Is the invertebrate eye really wired the wrong way round? Dr George Marshall an expert in anatomy, who specialised in the human eye for several years answers these questions and many more.

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