Combining human eye modeling technology and realistic rendering of computer graphics,this paper proposed a vision-realistic rendering method based on Navarro schematic eye model． Compared with the previous single lens model,Navarros model could simulate more vision characteristics of human eye． Based on Navarros model,utilizing the distributed ray tracing,and compute aspheric surface ray path,simulated more accurate retinal image． Further more,by adjusting the shape parameter of cornea and lens,to change the total diopter of the eye,rendered retina images with exact myopia and hyperopia of different levels． The experiment results indicate that this method can generate more realistic retina images reflected vision characteristics of the human eye,and by adjusting the parameter of the model,it can easily simulate the eye defect．
