Anatomically accurate, finite model eye for optical modeling

TLDR

A schematic eye is needed to accurately model vision under diverse conditions such as refractive surgery, contact lenses, spectacles, and near vision. The study proposes a new anatomically accurate model eye to calculate optical transfer functions and predict optical performance. The model is a finite eye with four aspheric refracting surfaces, a gradient‑index lens, an equivalent power of 60.35 D, and an axial length of 23.95 mm. The model yields spherical aberration within empirical limits, predicts chromatic aberration across 380–750 nm, and enables calculation of optical transfer functions and performance.

Abstract

There is a need for a schematic eye that models vision accurately under various conditions such as refractive surgical procedures, contact lens and spectacle wear, and near vision. Here we propose a new model eye close to anatomical, biometric, and optical realities. This is a finite model with four aspheric refracting surfaces and a gradient-index lens. It has an equivalent power of 60.35 D and an axial length of 23.95 mm. The new model eye provides spherical aberration values within the limits of empirical results and predicts chromatic aberration for wavelengths between 380 and 750 nm. It provides a model for calculating optical transfer functions and predicting optical performance of the eye.