J. Rovamo et al.: "Foveal optical modulation transfer function of the human eye at various pupil sizes." J. Opt. Soc. Am. A 15(9), 2504--2513, 1998.  Home/Search   Document Not in Database   Summary   Related Articles

.... 3 4 mm, the optical blurring is close to the diffraction limit; as the pupil diameter increases (for lower ambient light intensities) the width of the point spread function increases as well, because the distortions due to cornea and lens imperfections become large compared to diffraction effects [13,94]. The optical quality also deteriorates with increasing distance from the optical axis and the fovea [61] Westheimer [128] proposed a simple formula to approximate the foveal point spread function of the human eye when in good focus with a pupil diameter of 3 mm: PSF(ff) 0:952 e ....

....spread function of the human eye when in good focus with a pupil diameter of 3 mm: PSF(ff) 0:952 e Gamma2:59jffj 1:36 0:048 e Gamma2:43jffj 1:74 ; ff being in minutes of arc. This function is illustrated in Figure 5. For more 6 elaborate expressions with parameters for pupil size [94], age and pigmentation [49] the reader is referred to the literature. The point spread function also changes with wavelength. By accommodation, the eye can place any wavelength into good focus, but it is impossible to focus all wavelengths simultaneously. This effect is called chromatic ....

J. Rovamo et al.: "Foveal optical modulation transfer function of the human eye at various pupil sizes." J. Opt. Soc. Am. A 15(9), 2504--2513, 1998.

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