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wavefront aberration
    Effect of horizontal strabismus operation to wavefront aberration
    水平斜视手术对眼波前像差的影响
    Research on Wavefront Aberration and Its Applications
    波前像差研究及其在眼科中的应用
    Methods: Wavefront aberration was measured using Spatially Resolved Refractometer (SRR). Data were transformed to coefficient of 35 terms of Zernike polynomials. Root mean Square (RMS) of eye wavefront errors were calculated from coefficient of these 35 terms.
    方法:使用空间决定屈光计(SRR)的方法记录瞳孔37个点上十字靶标的偏移量,并转换为波前斜率,采用最小二乘法将斜率测量拟合到Zernike多项式函数,计算出1~35项Zernic 系数的权重值和眼整体波前像差的均方根(RMS)。
    The analyses of the feature of wavefront aberration of myopic eyes and Its factor of effectPurpose: Wavefront aberrations of myopic eyes( average of age is 23.6) were measured and studied in order to understand the feature of wavefront aberration of myopic eyes and its factor of effect,.
    近视眼波前像差的构成特点及影响因素目的:通过分析较大样本近视眼的波前像差,了解近视眼波前像差的构成特点,探讨近视眼波前像差的影响因素。
    Methods: Using the wavefront aberration of emmetropic eyes as control to study the features of wavefront aberration of myopic eyes.
    方法:以正视眼波前像差作为对照,了解近视眼波前像差构成特点。
    The RMS values of both total wavefront aberration and astigmatism aberration are larger than those values of emmetropic eyes (minimal t=3.108, p = 0.047).
    2.散光像差=-1.351-0.472×角膜散光度-0.0853×眼内散光度+0.05474×眼轴,高阶像差 = 0.210+0.02597×近视屈光度+0.288× SRI(最小t=1.995,P=0.047)。 结论:青年近视眼波前像差大于正视眼,两者的差异来源于散光像差。
    Basis on the concept of human eye wavefront aberration, chapter 4 studied Zemike polynomials to represent the aberrated wavefront in the pupil and fitted the data to a Zernike series to reconstruct the wavefront aberrations of living human eye.
    4.探索了波前像差矫正理论。 叙述了人眼像差的概念和产生的原因,并确定了采用Zernike多项式表示像差的方法;
    1. The modulation transfer function (MTF) for a large pupil is computed from the wavefront aberration. The influence of the wavefront aberration on the MTF is analyzed. Using the wavefront aberration map and the MTF, interaction between aberrations to improve or reduce visual performance is discussed.
    1.计算分析了大瞳孔直径下调制传递函数MTF与高阶像差的关系,用波前像差图和调制传递函数MTF分析了某些像差的组合对视觉质量的影响情况。
    Based on the relationship between the change of the cornea thickness and optical path length, the ablation profile for the correction of wavefront aberration is presented and simulated on computer.
    使用改变光程的方法建立起波前像差与角膜切削量之间的关系,并对像差矫正模型进行计算仿真;
    The wavefront aberration, is the sum of individual aberrations including defocus and astigmatism as well as many other aberrations referred to as higher order aberrations.
    波前像差(Wavefront aberration)系此指人眼光学像差的总称,包括离焦,散光和其它由传统像差概念延拓而来的更高级像差。
    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。
    Wavefront aberration refers to the difference between the optimal wavefront of the optical system and the actually measured optical system wavefront.
    波前像差是指理想光学系统之参考波阵面与实际测量光学系统波阵面之间的差别。
    In recent years, along with the developing new technique, people have a new concept of the wavefront aberration.
    近年来随着新技术的不断发展,人们对波前像差有了崭新的认识。
    It had been improved that wavefront aberration had a close relationship with vision quality.
    研究证明,波前像差与人眼视觉质量有密切关系。
    To get a deeper understanding the impacts of wavefront aberration on vision quality, we designed a clinical study to compare the difference of wavefront aberration before and after the corneal refractive surgery with excimer laser for myopic and astigmatic eyes, so as to analyze the characteristic of the wavefront aberration and the factors that impact it more fully, hoping to offering the relative information for wavefront aberration supported customized ablation(WASCA)and further improving technique of the operation.
    为了深入理解波前像差对视觉质量的影响,我们设计了一项临床研究,比较了准分子激光近视和散光患者术前和术后的波前像差,旨在更全面地分析波前像差的特点及其影响因素,期望能够为波前像差引导的角膜个体化切削和进一步改进手术方式提供相关信息。
    Wavefront aberration measurement can improve its exactness and objectivity. So it can highly improve optical quality of eye surgery.
    波前像差检查能够提高验光测量的精确性和客观性,从而指导手术,极大提高LASIK手术后的视觉质量。
    Objective : The wavefront aberration guided-customized ablation is an important part of the corneal refractory surgery .
    目的:波前像差引导的个体化切削是目前准分子激光角膜屈光手术发展的一个重要方向。
    Excimer laser aberration correction system includes two parts: wavefront aberration measurement using subjective aberrometer WFA 1000 and wavefront aberration correction using excimer laser system.
    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。
    Wavefront aberration guided excimer laser cornea ablation is a main method of customised corneal ablation. Compared to traditional refractive errors correcting,the principle and technique are quite different.
    波前像差引导的准分子激光角膜屈光手术是“个性化”切削的主要方法 ,与传统的矫正屈光不正方法相比 ,在原理和方法上有很大不同。
    Objective To demonstrate the effect of the pupillary dilation on the lower order wavefront aberration measured with the Asclepion Shack-Hartmann aberrometer an to compare the second order aberration with the results of autorefraction under dilated pupilcondition,further to determine whether pupillary dilation is necessary when taking the measurement.
    目的 比较运用Asclepion波前像差仪在原瞳暗视和药物散瞳两种状态下测得的低阶像差 (lowerorderwavefrontaberration) ,并将测量结果与散瞳电脑验光的屈光值相比较 ,以探讨在应用Asclepion波前像差仪时散瞳的必要性及其测量低阶像差的可靠性。
 

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