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Article
February 1957

LUNEBURG THEORY OF VISUAL GEODESICS IN BINOCULAR SPACE PERCEPTION

Author Affiliations

Human Engineering Branch Medical Research Laboratory U. S. Naval Submarine Base New London, Conn.

AMA Arch Ophthalmol. 1957;57(2):312-314. doi:10.1001/archopht.1957.00930050321027

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Abstract

To the Editor:  —Replying to Drs. Shipley and Walker, I wish briefly to say:

  1. Shipley and Walker claim that work done in the darkroom alleys cannot be said to have been carried out under scotopic conditions.

    Reply: Unquestionably, points of light in a darkroom are perceived by the foveal cones, but a few points of light in a wholly dark surround do not prevent scotopic adaptation (the stars are seen at night with dark-adapted eyes). Therefore, experiments with darkroom alleys involve foveal (cone) perception by eyes which are in a state of scotopic adaptation—a complex which has not been sufficiently examined by darkroom experimenters. However, I have no objection to using the term darkroom alleys and have in general used this term in my article.

  2. Shipley and Walker claim I conclude that the white lighted and darkroom alleys give the same results.

    Reply: Nowhere do I conclude that

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