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Line drawing by
Wilhelm Friedrich Kühne of the only "human optogram", an image from the retina of executed prisoner Erhard Gustav Reif. Kühne's original 4 millimetre image of the optogram no longer exists, except for this line drawing from his 1881 paper
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.
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The following pages on the
English Knowledge (XXG) use this file (pages on other projects are not listed):
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Add a one-line explanation of what this file represents
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Observations for
Anatomy and Physiology of the Retina
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Commons is a freely licensed media file repository.
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