Oshika T, Tsuboi S, Yaguchi S, Yoshitomi F, Nagamoto T, Nagahara K, Emi K
Department of Ophthalmology, Tokyo Kosei Nenkin Hospital, Japan.
Ophthalmology. 1994 Jul;101(7):1183-90. doi: 10.1016/s0161-6420(94)31189-4.
To prospectively and comprehensively compare the clinical results of two small-incision cataract surgery procedures, silicone intraocular lens (refractive index of 1.46) implantation through a 3.2-mm incision and polymethylmethacrylate intraocular lens implantation through a 5.5-mm incision.
Two hundred eyes with cataract randomly were assigned to either procedure. Except for incision size, identical surgical methods were used in every case. Data on uncorrected and corrected visual acuity, keratometry, corneal topography, flare-cell measurement, fluorophotometry, specular microscopy, glare disability measurement, and photographic examination of intraocular lens decentration were analyzed up to 6 months after surgery.
Eyes in the 3.2-mm incision group displayed significantly better uncorrected and corrected visual acuity in the early postoperative period, lower aqueous flare intensity and cell counts immediately after surgery, less operatively induced astigmatism throughout the study period, and less corneal topographic changes taken 3 months after surgery. No significant between-group differences were noted for other parameters. Complications in the two groups were few and comparable.
Both procedures of small-incision cataract surgery offered satisfactory clinical results, but 3.2-mm incision cataract surgery allowed significantly earlier recovery of visual function and better preservation of corneal shape.
前瞻性、全面地比较两种小切口白内障手术的临床效果，即通过3.2毫米切口植入硅酮人工晶状体（折射率为1.46）和通过5.5毫米切口植入聚甲基丙烯酸甲酯人工晶状体。
将200例白内障患者的眼睛随机分配至两种手术方法。除切口大小外，所有病例均采用相同的手术方法。对术后6个月内的未矫正和矫正视力、角膜曲率测量、角膜地形图、闪光细胞测量、荧光光度测定、镜面显微镜检查、眩光残疾测量以及人工晶状体偏心的摄影检查数据进行分析。
3.2毫米切口组的眼睛在术后早期显示出明显更好的未矫正和矫正视力，术后即刻房水闪光强度和细胞计数更低，在整个研究期间手术引起的散光更小，术后3个月角膜地形图变化更小。其他参数在两组之间未发现显著差异。两组的并发症都很少且相当。
两种小切口白内障手术方法均提供了令人满意的临床效果，但3.2毫米切口白内障手术能使视功能显著更早恢复，并更好地保持角膜形态。
