Gómez-Pedrero José A, Alonso José
Universidad Complutense de Madrid, Applied Optics Complutense Group, Optics Department, Facultad de Óptica y Optometría, C/Arcos de Jalón, 118, Madrid 28037, Spain.
Universidad Complutense de Madrid, Applied Optics Complutense Group, Optics Department, Facultad de Óptica y Optometría, C/Arcos de Jalón, 118, Madrid 28037, SpainbIndizen Optical Technologies, C/Santa Engracia 6, Madrid 28010, Spain.
J Biomed Opt. 2016 Dec 1;21(12):125005. doi: 10.1117/1.JBO.21.12.125005.
We propose in this work a model for describing visual acuity (V) as a function of defocus and pupil diameter. Although the model is mainly based on geometrical optics, it also incorporates nongeometrical effects phenomenologically. Compared to similar visual acuity models, the proposed one considers the effect of astigmatism and the variability of best corrected V among individuals; it also takes into account the accommodation and the “tolerance to defocus,” the latter through a phenomenological parameter. We have fitted the model to the V data provided in the works of Holladay et al. and Peters, showing the ability of this model to accurately describe the variation of V against blur and pupil diameter. We have also performed a comparison between the proposed model and others previously published in the literature. The model is mainly intended for use in the design of ophthalmic compensations, but it can also be useful in other fields such as visual ergonomics, design of visual tests, and optical instrumentation.
在这项工作中，我们提出了一个模型，用于描述视力（V）作为散焦和瞳孔直径的函数。尽管该模型主要基于几何光学，但它也从现象学角度纳入了非几何效应。与类似的视力模型相比，所提出的模型考虑了散光的影响以及个体之间最佳矫正视力的变异性；它还考虑了调节和“散焦耐受性”，后者通过一个现象学参数来体现。我们已将该模型拟合到霍拉迪等人以及彼得斯的著作中提供的视力数据，展示了该模型准确描述视力随模糊和瞳孔直径变化的能力。我们还对所提出的模型与先前文献中发表的其他模型进行了比较。该模型主要旨在用于眼科补偿设计，但它在视觉人体工程学、视觉测试设计和光学仪器等其他领域也可能有用。
