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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 29, Iss. 12 — Dec. 1, 1939
  • pp: 531–534

The Koremetron: An Instrument for Measuring Pupillary Diameters

R. CLARK JONES  »View Author Affiliations

JOSA, Vol. 29, Issue 12, pp. 531-534 (1939)

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The theory and construction of an apparatus which permits the rapid measurement of pupillary diameters is presented. This instrument, the koremetron, is portable, and uses the same principle as that involved in observing entoptical phenomena.

R. CLARK JONES, "The Koremetron: An Instrument for Measuring Pupillary Diameters," J. Opt. Soc. Am. 29, 531-534 (1939)

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  1. 1 Helmholtz, Physiological Optics (Optical Society of America, 1924), Vol. 1, p. 204.

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