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首页> 外文会议>Current developments in lens design and optical engineering XVII >Three-dimensional ray tracing for refractive correction of human eye ametropies
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Three-dimensional ray tracing for refractive correction of human eye ametropies

机译：三维射线追踪，用于矫正人眼屈光不正

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Ametropies of the human eye, are refractive defects hampering the correct imaging on the retina. The most common ways to correct them is by means of spectacles, contact lenses, and modern methods as laser surgery. However, in any case it is very important to identify the ametropia grade for designing the optimum correction action. In the case of laser surgery, it is necessary to define a new shape of the cornea in order to obtain the wanted refractive correction. Therefore, a computational tool to calculate the focal length of the optical system of the eye versus variations on its geometrical parameters is required. Additionally, a clear and understandable visualization of the evaluation process is desirable. In this work, a model of the human eye based on geometrical optics principles is presented. Simulations of light rays coming from a punctual source at six meter from the cornea are shown. We perform a ray-tracing in three dimensions in order to visualize the focusing regions and estimate the power of the optical system. The common parameters of ametropies can be easily modified and analyzed in the simulation by an intuitive graphic user interface.
机译：人眼的屈光性是妨碍视网膜上正确成像的屈光缺陷。纠正它们的最常见方法是借助眼镜，隐形眼镜和激光手术等现代方法。但是，在任何情况下，识别屈光不正的等级对于设计最佳矫正作用都是非常重要的。在激光手术的情况下，必须定义新的角膜形状以获得所需的屈光矫正。因此，需要一种计算工具来计算眼睛的光学系统的焦距与其几何参数的变化。此外，还需要清晰易懂的评估过程可视化。在这项工作中，提出了基于几何光学原理的人眼模型。示出了来自距角膜六米处的点光源的光线的模拟。我们在三个维度上执行光线跟踪，以可视化聚焦区域并估计光学系统的功率。通过直观的图形用户界面，可以在仿真中轻松修改和分析屈光特性的常用参数。

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