OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 55, Iss. 9 — Sep. 1, 1965
  • pp: 1154–1157

Effect of Focus on the Visual Response to a Sinusoidally Modulated Spatial Stimulus

D. G. GREEN and F. W. CAMPBELL  »View Author Affiliations

JOSA, Vol. 55, Issue 9, pp. 1154-1157 (1965)

View Full Text Article

Acrobat PDF (578 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



The recent development in the use of sinusoidal gratings for the analytical study of optical systems has been applied to the effects of focus and pupil aperture on visual resolution. For an eye with a dilated pupil, the in-focus position is shown to depend upon the spatial frequency of the test target. The effective refractive power of the eye increases for the detection of low-frequency gratings. If the eye is corrected for this change in effective refractive power, an improvement of about 70% in contrast sensitivity occurs for low spatial frequencies. The implications of these findings on the phenomenon of “night myopia” are discussed.

D. G. GREEN and F. W. CAMPBELL, "Effect of Focus on the Visual Response to a Sinusoidally Modulated Spatial Stimulus," J. Opt. Soc. Am. 55, 1154-1157 (1965)

Sort:  Author  |  Journal  |  Reset


  1. M. Koomen, R. Scolnik, and R. Tousey, J. Opt. Soc. Am. 41, 80 (1951).
  2. S. Shlaer, J. Gen. Physiol. 21, 165 (1937).
  3. E. L. O'Neill, Introduction to Statistical Optics (Addison-Wesley Publishing Co., Inc. Reading, Massachusetts, 1963).
  4. E. H. Linfoot, Optical Image Evaluation (Focal Press, London, 1964).
  5. F. W. Campbell, J. Physiol. 144, 25P (1958).
  6. O. H. Schade, J. Opt. Soc. Am. 46, 721 (1956).
  7. W. S. Stiles and B. H. Crawford, Proc. Roy. Soc. (London) B 112, 428 (1933).
  8. F. W. Campbell, J. Physiol. London 123, 357 (1954).

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.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited