Development of a human eye model for visual performance assessment

Chong-Jhih Jiang; Yi-Chun Chen; Tsung-Hsun Yang; Ching-Cherng Sun

doi:10.1117/12.825974

21 August 2009 Development of a human eye model for visual performance assessment

Chong-Jhih Jiang, Yi-Chun Chen, Tsung-Hsun Yang, Ching-Cherng Sun

Proceedings Volume 7427, Optical Modeling and Performance Predictions IV; 742706 (2009) https://doi.org/10.1117/12.825974
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

A biometry-based human eye model was developed by using the empirical anatomic and optical data of ocular parameters. The gradient refractive index of the crystalline lens was modeled by concentric conicoid isoindical surfaces and was adaptive to accommodation and age. The chromatic dispersion of homogeneous ocular media was described by Cauchy equations. The gradient equations for the refractive index of crystalline lens were modified at particular wavelengths according to the same dispersion model. Mie scattering was introduced to simulate volumetric light scattering in the crystalline lens. The optical performance of the eye model was evaluated in CodeV and ASAP and presented by the modulation transfer function (MTF) at single and multiple wavelengths. The chromatic optical powers obtained from this model matched that of physiological eyes. The scattering property was assessed by means of glare veiling luminance and compared with CIE general disability glare equation. This model is highly potential for investigating visual performance in ordinary lighting and display conditions and under the influence of glare sources.

Citation Download Citation

Chong-Jhih Jiang, Yi-Chun Chen, Tsung-Hsun Yang, and Ching-Cherng Sun "Development of a human eye model for visual performance assessment", Proc. SPIE 7427, Optical Modeling and Performance Predictions IV, 742706 (21 August 2009); https://doi.org/10.1117/12.825974

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KEYWORDS

Eye models

Crystals

Refractive index

Visualization

Scattering

GRIN lenses

Modulation transfer functions

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