Lens surface type and refractive index distribution of the crystalline lens model in eye optical model was researched. Based on the lens optical pproperties, the effect of different lens combined models on the human eye model to reproduce the measured eye aberrations was analyzed comparatively with Zemax interface technology. The lens combined models included different surface types and different gradient-index distributions by different continuous formulas. The lens model with the minuam reproduce precision was also presented. The results show that the aberrations of the eye model with complex lens suface is close to measured eye aberrations, the lens model with the minuam reproduce precision includs Zernike surface and gradient-index distribution by piecewise function formulas.