Study On Characteristics Of Human Vision Based On Senior Aberration

As everyone knows, our understanding of the world.more than80%information isobtained through the eyes, which indicates the importance of a good visual quality ofhuman beings, while the senior aberration is the main factor affecting the quality of vision,especially at night scotopia cases.The effect of higher aberrations on visual image quality ismore outstanding,in view of this situation. On the basis of combining classical human eyemodel, using a variety of image quality evaluation method for the research of senioraberration of human eyes,establishing human visual model of the human eye,using avariety of visual quality evaluation methods to analyze spherical aberration,coma,cloverdegree of influence on the imaging quality, gives quantitative conclusions.The mainly contents of the thesis is as following:Firstly, introduction to the visual contrast sensitivity function quality evaluationmethod of the basic concepts and mathematical model, mathematical modeling of contrastsensitivity function.Combined with large groups of human eye pupil Zernike aberrationdata,compare of the data of the following situations:low-aberration correction, correct ofthe third level senior aberration correction third,fourth senior aberration, sphericalaberration, coma, clover, then show the output results analysis and the contribution to thequality of the degree of visual aberrations quantitative results.Secondly, the human eye aberration data are plugged into the mathematical model ofthe point spread function and modulation transfer function.The visual quality results areanalyzed under various aberrations, extracting node important, analysis of each aberrationon the contribution degree of visual quality, and combined with the contrast sensitivityfunction, comparing the results of three evaluation methods.Finally, according to the human eye optical structure.The choice of Zernike fringe sagsurfaces corneal surface is represented by35Zernike polynomials in ZEMAX software.Establish the actual human eye model, through the optimization to correct variousaberrations,make the eye structure more close to the actual to provide effective basis forvisual evaluation.