Dark adaptation with interposed white adapting fields

  • Ch. D. Bernholz
  • L. Spillmann
  • V. DaForno


It is proposed that dark adaptation following a moderate pigment bleach may nearly as well be carried out (and more conveniently) under low room lighting conditions as in complete darkness. To test this idea, dark adaptation curves were determined either immediately after the termination of a 3 min, 4.1 log td white pre-exposure field, or following 10 or 15 min of additional exposure to one of three low-level photopic (2.9, 2.4, 1.8 log td) backgrounds ofwhite light. Dark thresholds measured after the additional exposure fell rapidly and reached the rod plateau of the normal dark adaptation curve with a maximaldelay of 1.5 min (for the 10 min backgrounds) or 6.5 min (for the 15 min backgrounds). For the time to be spent in the dark, this meant asavings of 8.5 min. At smaller delays savings were even greater. The difference between savings and delay indicates whether or not an interposed background is feasible.


Dark Adaptation Room Lighting Additional Exposure Dark Adaptation Curve Moderate Pigment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Wir untersuchten, ob die Dunkeladaptation nach einer mittelstarken Pigmentbleichung nicht fast ebenso gut (und bequemer) bei niedriger Raumbeleuchtung erfolgen kann wie in völliger Dunkelheit. Um dies zu testen, wurden Dunkeladaptationskurven auf zweierlei Weise bestimmt: Sofort nach dem Erlöschen einer weißen Vorbelichtung von 3 min Dauer und 4.1 log td retinaler Beleuchtungsstärke; oder nach zusätzlicher Belichtung durch einen von dreiweißen Hintergründen von 2.9, 2.4 oder 1.8 log td für 10 oder 15 min. Dunkelschwellen, die nach der zusätzlichen Adaptation an die Hintergründe gemessen wurden, fielen schnell ab und erreichten den Endwert der normalen Dunkeladaptationskurve mit einerVerzögerung von höchstens 1.5 min (bei den 10 min Hintergründen) oder 6.5 min (bei den 15 min Hintergründen). Bezogen auf die Zeit, die in völliger Dunkelheit zugebracht werden mußte, bedeutet dies eineEinsparung von 8.5 min. Bei geringeren Verzögerungen war die Einsparung entsprechend größer. An dem Unterschied zwischen der Einsparung und der Verzögerung läßt sich ablesen, ob ein zusätzlicher Hintergrund angebracht ist.


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  1. Alpern M (1971) Rhodopsin kinetics in the human eye. J Physiol Lond 217:447–471PubMedGoogle Scholar
  2. Alpern M, Maaseidvaag F, Ohba N (1971) The kinetics of cone visual pigments in man. Vision Res 11:539–549PubMedGoogle Scholar
  3. Baker HD, Doran MD, Miller KE (1959) Early dark adaptation to dim luminances. J Opt Soc Am 49:1065–1070PubMedGoogle Scholar
  4. Blakemore CB, Rushton WAH (1965) The rod increment threshold during dark adaptation in normal and rod monochromat. J Physiol Lond 181:629–640PubMedGoogle Scholar
  5. Brown JL (1956) Review of the cone-to-rod ratio as a specification for lighting systems. Illum Eng 51:577–584Google Scholar
  6. Brown JL (1971) Problems in the specification of luminous efficiency. In: Pierce JR, Levene JR (eds) Visual Science: Proceedings of the 1968 International Symposium. Indiana University Press, Bloomington, Indiana, pp 243–268Google Scholar
  7. Cavonius CR, Hilz R (1970) Visual performance after pre-adaptation to colored lights. J Exp Psychol 83:359–365PubMedGoogle Scholar
  8. Connors MM (1966) Effect of wavelength and bandwidth of red light on recovery of dark adaptation. J Opt Soc Am 56:111–115PubMedGoogle Scholar
  9. Crawford BH (1937) The changes of visual sensitivity with time. Proc Roy Soc Lond B123: 69–89Google Scholar
  10. Crawford BH (1947) Visual adaptation in relation to brief conditioning stimuli. Proc Roy Soc Lond B134:283–302Google Scholar
  11. Crozier WJ, Holway AH (1939) Theory and measurement of visual mechanisms. I. A visual discriminometer. J Gen Physiol 22:341–351Google Scholar
  12. Dowling JE (1967) The site of visual adaptation. Science 155:273–279PubMedGoogle Scholar
  13. Hattwick RG (1954) Dark adaptation to intermediate levels and to complete darkness. J Opt Soc Am 44:223–228PubMedGoogle Scholar
  14. Hecht S, Hsia Y (1945) Dark adaptation following light adaptation to red and white lights. J Opt Soc Am 35:261–267Google Scholar
  15. Hulburt EO (1951) Time of dark adaptation after stimulation by various brightnesses and colors. J Opt Soc Am 41:402–404PubMedGoogle Scholar
  16. Lingelbach B, Haberich FJ (1976) Differential thresholds of luminance under fixed and after sudden change of adaptation. Pflügers Arch 362:R 45 (Abstract)Google Scholar
  17. Rowland WM, Sloan DL (1944) The relative merits of red and white light of low intensity for adapting the eyes to darkness. J Opt Soc Am 34:601–604Google Scholar
  18. Rushton WAH (1961) Rhodopsin measurements and dark adaptation in a subject deficient in cone vision. J Physiol Lond 156:193–205PubMedGoogle Scholar
  19. Rushton WAH, Spitzer Powell D (1972) The rhodopsin content and the visual threshold of human rods. Vision Res 12:1073–1081PubMedGoogle Scholar
  20. Sloan LL (1950) The threshold gradients of the rods and the cones: in the dark-adapted and in the partially light-adapted eye. Am J Ophthal 33:1077–1089PubMedGoogle Scholar
  21. Smith SW, Morris A, Dimmick FL (1955) Effects of exposure to various red lights upon subsequent dark adaptation measured by the method of constant simuli. J Opt Soc Am 45:502–506PubMedGoogle Scholar
  22. Spillmann L, Nowlan AT, Bernholz CD (1972) Dark adaptation in the presence of waning background luminances. J Opt Soc Am 62:177–181PubMedGoogle Scholar
  23. Zigler MJ, Wolf E, King ES (1951) The influence of surround brightness and short wave components of radiation on dark adaptation. J Opt Soc Am 41:354–359Google Scholar

Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • Ch. D. Bernholz
    • 1
  • L. Spillmann
    • 2
  • V. DaForno
    • 3
  1. 1.Department of PsychologyMcMaster UniversityHamiltonCanada
  2. 2.Neurologische Universitätsklinik mit Abteilung für NeurophysiologieFreiburgGermany
  3. 3.Department of PsychologyKansas State UniversityManhattanUSA

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