Ertan Aylin, Bahadir Mehmet
Kudret Eye Hospital, Ankara, Turkey.
J Cataract Refract Surg. 2006 Oct;32(10):1710-6. doi: 10.1016/j.jcrs.2006.06.015.
To assess the outcomes of intrastromal ring segment (Intacs, Addition Technology) implantation using a femtosecond laser in patients with pellucid marginal corneal degeneration.
Kudret Eye Hospital, Ankara, Turkey.
In this retrospective noncomparative case series, 9 eyes of 6 patients with pellucid marginal corneal degeneration had implantation of Intacs segments by a femtosecond laser technique. Preoperative and postoperative evaluations included slitlamp examination, uncorrected (UCVA) and best corrected (BCVA) visual acuities, and keratometry by a Pentacam Scheimpflug camera (Oculus Opticgerate GmbH). All parameters were reviewed within 6 months.
Intacs were successfully implanted in all eyes. The UCVA significantly improved from preoperatively to 6 months after Intacs implantation (mean 0.18 +/- 0.24 [SD] and 0.53 +/- 0.23, respectively). The mean difference between the preoperative and postoperative UCVA was 3.5 +/- 1.6 lines (P = .008). The BCVA also significantly improved from preoperatively to 6 months after implantation (mean 0.63 +/- 0.26 and 0.85 +/- 0.18 at 6 months, respectively). The Snellen BCVA was 1.0 in 5 eyes postoperatively. The mean difference between preoperative and postoperative BCVA was 2.3 +/- 51 lines (P = .011). The mean preoperative spherical refraction decreased from -3.86 +/- 2.91 diopters (D) to -2.77 +/- 1.43D (P = .091) and the mean cylindrical refraction, from -2.41 +/- 2.27 D to -0.94 +/- 1.07 D (P = .046). The mean central corneal curvature decreased from 48.20 +/- 4.19 D preoperatively to 46.90 +/- 5.00 D (P = .008) at 6 months and the mean posterior elevation, from 53.88 +/- 21.72 microm to 32.55 +/- 11.23 microm (P = .008).
Intacs insertion using a femtosecond laser was safe and efficient in the correction of pellucid marginal corneal degeneration.
评估使用飞秒激光植入基质内环形片段（Intacs，Addition Technology公司）治疗透明边缘角膜变性患者的效果。
土耳其安卡拉的库德雷特眼科医院。
在这个回顾性非对照病例系列中，6例透明边缘角膜变性患者的9只眼采用飞秒激光技术植入了Intacs片段。术前和术后评估包括裂隙灯检查、未矫正视力（UCVA）和最佳矫正视力（BCVA），以及使用Pentacam眼前节分析仪（Oculus Opticgerate GmbH公司）进行角膜曲率测量。所有参数均在6个月内进行复查。
所有眼中Intacs均成功植入。Intacs植入术后6个月时UCVA较术前显著提高（术前平均为0.18±0.24[标准差]，术后为0.53±0.23）。术前和术后UCVA的平均差值为3.5±1.6行（P = 0.008）。植入术后6个月时BCVA也较术前显著提高（术前平均为0.63±0.26，术后6个月时为0.85±0.18）。术后5只眼的Snellen BCVA为1.0。术前和术后BCVA的平均差值为2.3±51行（P = 0.011）。术前平均球镜度数从-3.86±2.91屈光度（D）降至-2.77±1.43D（P = 0.091），平均柱镜度数从-2.41±2.27D降至-0.94±1.07D（P = 0.046）。术后6个月时中央角膜曲率平均值从术前的48.20±4.19D降至46.90±5.00D（P = 0.008），后表面高度平均值从53.88±21.72微米降至32.55±11.23微米（P = 0.008）。
使用飞秒激光植入Intacs治疗透明边缘角膜变性安全有效。
