American Journal of Physics
If a narrow line stimulus on an opposite contrast background is observed with appropriately misfocused vision, the stimulus appears as a number of alternating bright and dark fringes. A numerical calculation of this effect was performed. As a result it was found that the banding phenomenon is a Fresnel diffraction effect depending on the details of both the narrow line stimulus and the eye pupil.
Lock, James A., "Fresnel Diffraction Effects in Misfocused Vision" (1987). Physics Faculty Publications. 67.
Lock, James A. "Fresnel Diffraction Effects in Misfocused Vision." American Journal of Physics 55 (1987): 265-269.
Copyright 1987 American Association of Physics Teachers. The following article appeared in American Journal of Physics 55 (1987): 265-269 and may be found at http://aapt.scitation.org/doi/abs/10.1119/1.15175