On single and correct vision : by means of double and inverted images on the retinae / by W.P. Alison.

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On single and correct vision : by means of double and inverted images on the retinae / by W.P. Alison. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.