Laboratory of Experimental Ophthalmology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
J Cataract Refract Surg. 2010 Jan;36(1):34-43. doi: 10.1016/j.jcrs.2009.06.040.
To compare the optical performance of aspheric Tecnis ZA9003 and spherical Sensar AR40e intraocular lenses (IOLs).
Laboratory of Experimental Ophthalmology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
An aspheric IOL was implanted in 1 eye and a spherical IOL in the other eye of patients with bilateral age-related cataract. Contrast sensitivity was measured using 2 computerized tests (vertical sine-modulated gratings and circular sine-modulated patterns) with cycloplegia and a 5.0 mm artificial pupil under photopic conditions at optimum refractive correction and at several defocus levels. The depth of focus and the myopic shift (shift of optimum focus toward more myopic values at lower spatial frequencies) were determined. Higher-order aberrations were assessed using a Hartmann-Shack wavefront analyzer; straylight was measured with a straylight meter.
In the 60 eyes evaluated, there were no statistically significant differences in contrast sensitivity measured at optimum focus, depth of focus, or straylight between the 2 IOLs. The mean spherical aberration was significantly lower with the aspheric IOL (-0.036 microm) than with the spherical IOL (0.064 microm) (P<.001) and the mean myopic shift, statistically significantly smaller (0.05 diopter [D] and -0.47 D, respectively) (P<.001).
Eyes with the aspheric IOL had lower spherical aberration than eyes with the spherical IOL and, related to that, a smaller myopic shift. No significant differences were found between the 2 IOLs in contrast sensitivity measured at optimum focus, depth of focus, or straylight.
No author has a financial or proprietary interest in any material or method mentioned.
比较非球面 Tecnis ZA9003 和球面 Sensar AR40e 人工晶状体（IOL）的光学性能。
荷兰格罗宁根大学医学中心实验眼科实验室。
对双侧年龄相关性白内障患者的每只眼分别植入非球面 IOL 和球面 IOL。在睫状肌麻痹下，使用 2 种计算机测试（垂直正弦调制光栅和圆形正弦调制图案），在明视条件下，用 5.0mm 人工瞳孔，在最佳屈光矫正和几个离焦水平下测量对比敏感度。确定景深和近视漂移（较低空间频率时最佳焦点向更近视值的漂移）。使用哈特曼 - 夏克波前分析仪评估高阶像差；使用杂散光仪测量杂散光。
在评估的 60 只眼中，2 种 IOL 在最佳焦点、景深或杂散光的对比敏感度测量方面无统计学差异。非球面 IOL 的平均球差明显低于球面 IOL（-0.036μm 与 0.064μm）（P<.001），平均近视漂移也明显较小（0.05 屈光度（D）和-0.47D）（P<.001）。
与球面 IOL 相比，非球面 IOL 的眼睛具有较低的球差，因此近视漂移较小。在最佳焦点、景深或杂散光的对比敏感度测量方面，2 种 IOL 之间无显著差异。
没有作者在提到的任何材料或方法中拥有财务或所有权利益。
