OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 28, Iss. 6 — Mar. 15, 1989
  • pp: 1122–1127

Pupillary response: an index of visual threshold

Barbara E. Stewart and Rockefeller S. L. Young  »View Author Affiliations


Applied Optics, Vol. 28, Issue 6, pp. 1122-1127 (1989)
http://dx.doi.org/10.1364/AO.28.001122


View Full Text Article

Enhanced HTML    Acrobat PDF (730 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

The present study investigates the use of the afferent pupillary reflex as an objective index of a subject’s ability to detect a dim flash. The results support the general notion that the pupil responds to flashes near the absolute threshold for vision. In contrast to several previous studies, however, our results document that minute pupillary constrictions occur in response to small diameter (i.e., 3.5° and 1.2°) stimuli. These pupillary constrictions occur mostly on the trials when the subject also reported seeing the flash and little evidence of a response is found on the trials when the flashes were not detected. We infer that the sensitivity of the perceptual and pupillomotor pathways are very similar for the scotopic conditions tested.

© 1989 Optical Society of America

History
Original Manuscript: May 28, 1988
Published: March 15, 1989

Citation
Barbara E. Stewart and Rockefeller S. L. Young, "Pupillary response: an index of visual threshold," Appl. Opt. 28, 1122-1127 (1989)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-28-6-1122


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. F. A. Abraham, M. Alpern, “Factors Influencing Threshold of the Fundamental Electrical Response to Sinusoidal Excitation of Human Photoreceptors,” J. Physiol. 357, 151 (1984). [PubMed]
  2. E. Adachi-Usami, M. Misago, N. Kanayama, “Electro-Perimetry by Means of the Scotopic VECP,” Doc. Ophthalmol. Proc. Ser. 15, 179 (1978). [CrossRef]
  3. N. M. J. Schweitzer, “Threshold Measurements on the Light Reflex of the Pupil in the Dark Adapted Eye,” Doc. Ophthalmol. 10, 1 (1955).
  4. M. Alpern, D. W. McCready, L. Barr, “The Dependence of the Photopupil Response on Flash Duration and Intensity,” J. Gen. Physiol. 47, 265 (1963). [CrossRef] [PubMed]
  5. D. W. Burke, K. N. Ogle, “Comparison of Visual and Pupillary Light Thresholds in Periphery,” Arch. Ophthalmol. 71, 400 (1964). [CrossRef] [PubMed]
  6. G. Hakerem, S. Sutton, “Pupillary Response at Visual Threshold,” Nature London 212, 485 (1966). [CrossRef] [PubMed]
  7. N. M. J. Schweitzer, M. A. Bouman, “Differential Threshold Measurements on the Light Reflex of the Human Pupil,” AMA Arch. Ophthalmol. 59, 541 (1958). [CrossRef] [PubMed]
  8. R. S. L. Young, M. Alpern, “Pupil Responses to Foveal Exchange of Monochromatic Lights,” J. Opt. Soc. Am. 70, 697 (1980). [CrossRef] [PubMed]
  9. S. A. Smith, C. J. K. Ellis, S. E. Smith, “Inequality of the Direct and Consensual Light Reflexes in Normal Subjects,” Br. J. Ophthalmol. 63, 523 (1979). [CrossRef] [PubMed]
  10. J. G. Webster, G.H. Cohen, R. M. Boynton, “Optimizing the Use of the Criterion Response for the Pupil Light Reflex,” J. Opt. Soc. Am. 58, 419 (1968). [CrossRef] [PubMed]
  11. C. J. K. Ellis, “The Pupillary Light Reflex in Normal Subjects,” Br. J. Ophthalmol. 65, 754 (1981). [CrossRef] [PubMed]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Figures

Fig. 1 Fig. 2 Fig. 3
 

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited