OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 41, Iss. 2 — Feb. 1, 1951
  • pp: 130–131

Dark Adaptation Level and Duration of Testflash

ERNST WOLF and MICHAEL J. ZIGLER  »View Author Affiliations


JOSA, Vol. 41, Issue 2, pp. 130-131 (1951)
http://dx.doi.org/10.1364/JOSA.41.000130


View Full Text Article

Acrobat PDF (550 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Using a testfield subtending a visual angle of 5 degrees, dark adaptation functions were obtained with six test-exposures (1.0, 0.5, 0.1, 0.04, 0.02, and 0.01 sec) both from the central retina, and from the temporal parafovea. The functions for both retinal locations were found to vary systematically in relation to duration of testflash. With increasing test-exposure time, the final cone levels as well as the final rod levels are at lower threshold brightnesses. The sensitivity for a given test-exposure time is greater in the central retina than in the parafovea for the photopic range of vision, whereas the sensitivity for the scotopic.range is greater in the parafovea than in the central retina.

Citation
ERNST WOLF and MICHAEL J. ZIGLER, "Dark Adaptation Level and Duration of Testflash," J. Opt. Soc. Am. 41, 130-131 (1951)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-41-2-130

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited