Hyperacuity eye model

The hyperacuity eye model is critical for making human eyesight like an eagle. The anterior cornea surface is described by Zernike polynomials, and the refractive index profile of the crystalline lens is described by the graded refractive index. The hyperacuity eye model is established by the optical design software Zemax, with the influence of the angle between optical axis and visual axis of human eye on imaging taken into account. To apply the rise surface of Zernike fringe to anterior cornea of the human eye model may improve the imaging quality in the direction of the visual axis (5°visual field in Zemax model) and increase the value of point spread function (PSF). The aberration of human eye can be reduced by adopting the graded refractive index of the crystalline lens, which conforms with the anatomical structure of the human eye. By analyzing the resolution limits of the human eye and the wave aberration of the eye model, it is pointed out that the modulability of the human eye model for sensing the object′s highfrequency details can reach 0.55 when the spatial frequency is 60 period/ degree.