Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.
J Cataract Refract Surg. 2010 May;36(5):756-61. doi: 10.1016/j.jcrs.2009.11.020.
To evaluate the predictability of total postoperative spherical aberration after aspheric intraocular lens (IOL) implantation using preoperative corneal spherical aberration.
Keio University Hospital, Tokyo, Japan.
Corneal and ocular higher-order aberrations (HOAs) were analyzed preoperatively and postoperatively in eyes having cataract extraction with aspheric IOL implantation. The predicted postoperative total spherical aberration Z(4,0) was calculated by adding the preoperative corneal spherical aberration and the labeled spherical aberration of the IOL. The prediction error of the postoperative total spherical aberration was calculated by subtracting the predicted postoperative total spherical aberration from the postoperative total spherical aberration. Surgically induced corneal spherical aberration was calculated by subtracting the postoperative from the preoperative corneal spherical aberration.
There were no statistically significant differences between preoperative and postoperative corneal spherical aberration, 3rd-order aberration, or HOAs. The prediction error of the postoperative total spherical aberration was within +/-0.05 microm in 9 (24.3%) of the 37 eyes evaluated and within +/-0.10 microm in 18 eyes (48.6%). Statistically significantly correlations were found between the surgically induced corneal spherical aberration and prediction error of postoperative total spherical aberration, the preoperative corneal spherical aberration and surgically induced corneal spherical aberration, and the preoperative corneal spherical aberration and prediction error of postoperative total spherical aberration.
Predictability of postoperative ocular spherical aberration after cataract surgery with aspheric IOL implantation was insufficient because of the surgically induced corneal spherical aberration. Considering surgically induced corneal spherical aberration could improve the predictability of postoperative ocular spherical aberration.
评估使用术前角膜球差预测非球面人工晶状体（IOL）植入术后总球差的能力。
日本东京庆应义塾大学医院。
对行白内障超声乳化吸除联合非球面 IOL 植入术的患者，分别于术前和术后测量角膜和眼高阶像差（HOA）。通过将术前角膜球差与 IOL 标定的球差相加，计算术后总球差 Z(4,0)的预测值。通过将术后总球差减去预测术后总球差，计算术后总球差的预测误差。通过将术后角膜球差减去术前角膜球差，计算手术引起的角膜球差。
37 只眼中有 9 只（24.3%）的术后总球差预测误差在 +/-0.05μm 以内，有 18 只（48.6%）的术后总球差预测误差在 +/-0.10μm 以内，差异均无统计学意义。术后总球差的预测误差与手术引起的角膜球差、术前角膜球差与手术引起的角膜球差以及术前角膜球差与术后总球差的预测误差之间存在显著相关性。
由于手术引起的角膜球差，白内障超声乳化吸除联合非球面 IOL 植入术后眼总球差的预测能力不足。考虑到手术引起的角膜球差，可以提高术后眼总球差的预测能力。
