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A statistical model of the aberration structure of normal, well‐corrected eyes
Author(s) -
Thibos Larry N.,
Bradley Arthur,
Hong Xin
Publication year - 2002
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1046/j.1475-1313.2002.00059.x
Subject(s) - zernike polynomials , spherical aberration , wavefront , optical aberration , optics , multivariate normal distribution , adaptive optics , refractive surgery , covariance , human eye , computer science , gaussian , image quality , mathematics , multivariate statistics , artificial intelligence , physics , image (mathematics) , statistics , lens (geology) , cornea , quantum mechanics
A statistical model of the wavefront aberration function of the normal, well‐corrected eye was constructed based on normative data from 200 eyes which show that, apart from spherical aberration, the higher‐order aberrations of the human eye tend to be randomly distributed about a mean value of zero. The vector of Zernike aberration coefficients describing the aberration function for any individual eye was modelled as a multivariate, Gaussian, random variable with known mean, variance and covariance. The model was verified by analysing the statistical properties of 1000 virtual eyes generated by the model. Potential applications of the model include computer simulation of individual variation in aberration structure, retinal image quality, visual performance, benefit of novel designs of ophthalmic lenses, or outcome of refractive surgery.