Abstract
THE recovery of vision after blinding by a bright light depends, among other things, on a reformation of visual purple from vitamin A in the blood. Various instruments have been used to test this relationship, but have been severely criticized. In all such work, at least fifteen minutes have been needed for each test, and usually much longer.
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11 February 1939
An Erratum to this paper has been published: https://doi.org/10.1038/143238d0
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PETT, L. A Rapid Visual Test for Vitamin A Deficiency. Nature 143, 23 (1939). https://doi.org/10.1038/143023a0
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DOI: https://doi.org/10.1038/143023a0
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A Rapid Visual Test for Vitamin A Deficiency
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