The cornea

which is at the forepart of human eye optical system

is one of the main refractive optical elements. The establishment of cornea model has important research and clinical value. Based on the corneal aspheric surfaces

from the point of view of optical imaging

the way of corneal bi-conic model in human eye model is proposed with the optical design software Zemax (Zemax Development Corp. San Diego

Calif.). With the analysis measured results of Chinese emmetropic cornea and collected data of Chinese myopic eye

based on choosing the wave aberration of human eye as the merit function

the initial model eye is optimized

and then the corneal models of the emmetropic

myopic and corrected eye models are presented. The relevant corneal ablation model is also presented. The corneal bi-conic model is constructed by the basis of human eye model; this method can also provide a useful applied digital model of calculating wavefront optimized ablation profiles for wavefront aberration supported customized corneal ablation.