On the gekko pupil and Scheiner's disc

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C J Murphy, H C Howland

    Vision Research
    |January 1, 1986
    PubMed

    Abstract:

    The four pinhole apertures of the constricted gekko pupil are an adaptation for decreasing the depth of field of the eye, while decreasing the total light flux to the retina. This may be useful for distance estimation at high light levels.

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