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波前像差测量
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  “波前像差测量”译为未确定词的双语例句
     MethodsSetting up of special optical metrical system in laboratory to perform the measure of IOLs wavefront aberration by applying the Hartmann-Shack aberrometer. .
     实验室搭建IOL波前像差测量光路系统,运用Hartmann-Shack波前传感器实施像差测量。
短句来源
     The wavefront aberration of the human′s eye, which was described by Zernike polynomials coefficients,was measured by the subjective Ray-tracing wavefront sensor.
     通过主观式光线追踪波前像差测量方法得到用Zernike系数描述的人眼波前像差;
短句来源
     Methods A special optical metric system was set up to measure the wavefront aberrations of IOLs with a Hartmann-Shack aberrometer.
     方法在实验室搭建IOL波前像差测量光路系统,运用Hartmann-Shack波前测量仪实施像差测量。
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  相似匹配句对
     Clinical application of wavefront aberration
     波前像差及其应用与测量
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     Accuracy of Zywave aberrometer in measurement of refractive errors
     Zywave波前像差测量屈光不正的准确性研究
短句来源
     Wavefront measurement of artificial beacon
     人造信标波前测量
短句来源
     Measurement of Wave-front Aberrations in the Children's Eyes Using Asclepion Shack-Hartmann Aberrometer
     Asclepion像差测量儿童波前像差的初步研究
短句来源
     Scotopic pupil diameter in myopic young population by using WaveScan aberrometer
     WaveScan波前像差测量暗适应下瞳孔的直径
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Excimer laser aberration correction system is able to create customised ablation, not only for the correction of emmetropia, but also to reduce higher order ocular aberrations. It can reduce aberrations and eliminate night vision problems caused by LASIK surgery. Excimer laser aberration correction system includes two parts: wavefront aberration measurement using subjective aberrometer WFA 1000 and wavefront aberration correction using excimer laser system. We introduced the concept of the wave front aberration...

Excimer laser aberration correction system is able to create customised ablation, not only for the correction of emmetropia, but also to reduce higher order ocular aberrations. It can reduce aberrations and eliminate night vision problems caused by LASIK surgery. Excimer laser aberration correction system includes two parts: wavefront aberration measurement using subjective aberrometer WFA 1000 and wavefront aberration correction using excimer laser system. We introduced the concept of the wave front aberration of the living human eye and the methods of evaluation; fitted the data to a Zernike series to reconstruct the wavefront aberrations of living human eye. We studied the principle of excimer laser aberration correction system and the block diagram of system controlling software. The mechanism of action of excimer laser corneal ablation, "flying-spot" scanning, active eye ball tracking, as well as laser energy closing loop controlling key technologies had been discussed. Our research results have been applied to the excimer laser aberration correction system. During animal practice, it has achieved satisfactory outcomes.

准分子激光人眼像差矫正系统旨在实现个性化切削 ,它不仅能进行正常的屈光矫正 ,而且可以减少高阶的光学像差 ,能够减少由LASIK手术引起的像差和夜间视物障碍。准分子激光人眼像差矫正系统包括主观式像差仪进行波前像差的测量、准分子激光系统进行像差矫正两大部分。描述了人眼波前像差的概念、成因以及表示的方法 ,着重研究了Zernike多项式与人眼波前像差的对应关系 ,利用主观空间分辨屈光计原理制成的主观式像差仪进行人眼波前像差的测量 ;研究了准分子激光人眼像差矫正系统的原理和系统软件控制框图 ,对准分子激光切削角膜的机理、飞点扫描技术、主动眼球跟踪技术、激光的能量闭环控制技术等关键技术作了阐述。研究的成果直接用于准分子激光人眼像差矫正系统 ,已通过动物试验 ,目前正在进行临床实验。

The wavefront aberration of the human′s eye, which was described by Zernike polynomials coefficients,was measured by the subjective Ray-tracing wavefront sensor. Then the Gullstrand-Le Grand eye model was chosen as the original configuration. The medical corneal topography was used to measure the corneal anterior and posterior surfaces and high order aspheric function was chosen to fit the corneal surfaces. The depths among each components of the eye were measured with ultrasonic technology. And taking the Zernike...

The wavefront aberration of the human′s eye, which was described by Zernike polynomials coefficients,was measured by the subjective Ray-tracing wavefront sensor. Then the Gullstrand-Le Grand eye model was chosen as the original configuration. The medical corneal topography was used to measure the corneal anterior and posterior surfaces and high order aspheric function was chosen to fit the corneal surfaces. The depths among each components of the eye were measured with ultrasonic technology. And taking the Zernike coefficients as the merit function in the optical design software Zemax, we optimize the lens′s shape which was defined with the Zernike Fringe sag surface. At last, the individual eye model was established. The wavefront aberration calculated from the model was exactly equal to the data measured with ray-tracing technology.

通过主观式光线追踪波前像差测量方法得到用Zernike系数描述的人眼波前像差;在GullstrandLeGrand眼模型的基础上,引入用医用角膜地形图仪测量并用高次非球面函数拟合的实际人眼角膜形状数据,又引入角膜、前房及玻璃体厚度等个体化的眼结构参数;在光学建模软件Zemax中用所测Zernike系数建立评价函数,并对用Zernike矢高面描绘的晶状体表面进行优化.由此建立了个体化眼模型,并由此模型中可以计算得到与实际测量的波前像差值完全相同的各项Zernike系数值,从而可用于描述实际人眼的光学特性.

The correction of human eye's aberration is one of the researching focuses in ophthalmology.It is of great importance to improve the visual performance of human eyes.The measurement of human eye's aberration is the foundation of the correction surgery.The paper studies the working principle of a subjective wave-front aberrometer and the key techniques of image sampling,image processing and analyzing,image segmentation with Ostu method and auto-tracing function.The self-produced aberrometer which used above key...

The correction of human eye's aberration is one of the researching focuses in ophthalmology.It is of great importance to improve the visual performance of human eyes.The measurement of human eye's aberration is the foundation of the correction surgery.The paper studies the working principle of a subjective wave-front aberrometer and the key techniques of image sampling,image processing and analyzing,image segmentation with Ostu method and auto-tracing function.The self-produced aberrometer which used above key techniques can measure lower-order and higher-order aberrations accurately.The measure results can reach up to seventh order with 35 items.It will be widely used in the future.

人眼像差的矫正是目前眼科界的研究热点之一,对于提高人眼视觉质量具有十分重要的意义,人眼像差的测量是像差矫正的基础。本文研究了主观式波前像差测量仪的测量原理,并对其中的图像采集、图像处理、图像的Ostu法阈值分割,自动跟踪等关键技术进行了研究。采用本文研究的关键技术自行研制出的主观式波前像差仪能精确地测量出人眼的低阶和高阶像差,测量结果可达7阶35项,其应用前景广阔。

 
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