DuPage Ophthalmology, Lombard, Illinois 60148, USA.
J Cataract Refract Surg. 2011 Nov;37(11):1984-7. doi: 10.1016/j.jcrs.2011.05.031. Epub 2011 Sep 1.
To compare pupil size-based Scheimpflug Holladay equivalent keratometry with conventional automated keratometry in refractive outcomes after cataract surgery in patients with virgin corneas.
Private practice, Lombard, Illinois, USA.
Comparative case series.
Two groups had phacoemulsification with implantation of a posterior chamber intraocular lens (IOL). Both had immersion ultrasound biometry. The study group had Scheimpflug keratometry based on pupil size. The control group had conventional automated keratometry. The IOL power was calculated with the Holladay 2 formula. Statistical analysis of the refractive outcomes and the keratometry (K) readings was performed.
The study group comprised 76 patients (110 eyes) and the control group, 94 patients (137 eyes). The mean average K reading was 43.45 diopters (D) in the study group and 43.51 D in the control group; the difference was not statistically significant (P=.779). The mean absolute refractive error was 0.480 D in the study group and 0.252 D in the control group; the difference was statistically significant (P<.001). In the study group, 77 eyes were within ± 0.50 D of the intended postoperative refraction, 28 were between ± 0.50 D and ± 1.00 D, 4 were between ± 1.00 D and ± 1.50 D, and 1 was between ± 1.50 D and ± 2.00 D. In the control group, 131 eyes were within ± 0.50 D, 3 were between ± 0.50 D and ± 1.00 D, and 3 were between ± 1.00 D and ± 1.50 D. The between-group difference was statistically significant (P<.001).
Conventional automated keratometry gave better refractive outcomes after cataract surgery than pupil-based Scheimpflug keratometry.
No author has a financial or proprietary interest in any material or method mentioned.
比较在角膜透明的患者中行白内障手术后基于瞳孔大小的 Scheimpflug Holladay 等效角膜曲率计与传统自动角膜曲率计的屈光结果。
美国伊利诺伊州隆巴德的私人诊所。
对比病例系列。
两组均行白内障超声乳化吸除术并植入后房型人工晶状体（IOL）。两组均行浸液超声生物测量。研究组行基于瞳孔大小的 Scheimpflug 角膜曲率计检查，对照组行传统自动角膜曲率计检查。IOL 度数使用 Holladay 2 公式计算。对屈光结果和角膜曲率（K）读数进行统计学分析。
研究组包括 76 例（110 只眼）患者，对照组包括 94 例（137 只眼）患者。研究组平均平均 K 值为 43.45 屈光度（D），对照组为 43.51 D；差异无统计学意义（P=.779）。研究组平均绝对屈光误差为 0.480 D，对照组为 0.252 D；差异有统计学意义（P<.001）。在研究组中，77 只眼术后屈光度在预期值的±0.50 D 以内，28 只眼在±0.50 D 和±1.00 D 之间，4 只眼在±1.00 D 和±1.50 D 之间，1 只眼在±1.50 D 和±2.00 D 之间。在对照组中，131 只眼在±0.50 D 以内，3 只眼在±0.50 D 和±1.00 D 之间，3 只眼在±1.00 D 和±1.50 D 之间。组间差异有统计学意义（P<.001）。
在白内障手术后，传统自动角膜曲率计的屈光结果优于基于瞳孔大小的 Scheimpflug 角膜曲率计。
没有作者对提到的任何材料或方法有经济或专有利益。
