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首页> 外文期刊>Vision Research: An International Journal in Visual Science >Limitations of the ocular wavefront correction with contact lenses.
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Limitations of the ocular wavefront correction with contact lenses.

机译：隐形眼镜的眼波校正的局限性。

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摘要

We analyze theoretically, by means of both computer simulations and laboratory experiments, the limitations of correcting aberrations with ideal customized contact lenses. Four experiments are presented: In the first one, we have analyzed the limitations of a static correction on the dynamic wavefront. In the second one, we studied the rotations of a contact lens on the eye using an optical method. The third one researched the limitations of the wavefront correction, focusing on a group of normal and highly aberrated eyes, when the correction suffers from a permanent rotation or translation. The fourth one estimates, under a simple approximation, the error made when applying on the corneal plane the correction corresponding to the wavefront measured at the entrance-pupil plane. Results show that a static correction of the wavefront leaves a residual aberration of 0.15-0.25 microm for a 5 mm pupil. Rotation of the contact lens (up to +/-4 degrees) diminishes the effectiveness of the correction. Horizontal or vertical translations of 0.5mm could generate a high-order-aberration RMS that is higher than the remaining one after a standard low-order correction. In particular, the group of eyes having normal values of high-order aberrations are more sensitive to translations than the one having higher values. Most of the results could be applied to other methods of aberration correction, such as refractive surgery or correction by means of intraocular lenses.
机译：我们从理论上通过计算机模拟和实验室实验来分析，使用理想的定制隐形眼镜校正畸变的局限性。提出了四个实验：在第一个实验中，我们分析了动态波前静态校正的局限性。在第二个中，我们使用光学方法研究了眼睛上的隐形眼镜的旋转。第三个研究了波前校正的局限性，重点是一组正常且高度差的眼睛，当时校正遭受了永久性旋转或翻译。第四个估计值，在简单的近似值下，在角膜平面上施加校正时，校正对应于在入口至学生平面上测得的波前。结果表明，对于5 mm瞳孔，波前的静态校正留下了0.15-0.25 microm的残余像差。隐形眼镜的旋转（最高+/- 4度）会降低校正的有效性。 0.5mm的水平或垂直翻译可能会产生一个高阶放入RMS，该RMS比标准低阶校正后的其余rms高。特别是，具有高阶畸变的正常值的眼睛对翻译比具有更高值的眼睛更敏感。大多数结果可以应用于其他像差校正方法，例如屈光手术或通过眼内透镜进行校正。

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