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Abstract

A new model autocorrelation function is provided to which autocorrelation data is fit. The model function is empirically derived based on previously collected autocorrelation data and is indicative of the degree of cataractogenesis. The model autocorrelation function contains five parameters to characterize first and second portions of a fitted curve. In one embodiment, the model autocorrelation function has a single exponential and a single second order polynomial component to represent the first and second portions of the fitted curve, respectively. In an alternative form, the square root of the autocorrelation function is used as the model with the square root form being linear in four of five terms. The linearity in four of five terms permits the fitting of the data points to the model function using simple linear regression analysis. Other forms of mathematical models, such as a straight line first portion and a parabolic second portion may use five parameters to model the autocorrelation data.

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