Debois A, Nochez Y, Bezo C, Bellicaud D, Pisella P-J
Service d'ophtalmologie, CHU de Bretonneau, 2, boulevard Tonnellé, 37000 Tours, France.
J Fr Ophtalmol. 2012 Oct;35(8):580-6. doi: 10.1016/j.jfo.2011.10.012. Epub 2012 Jun 15.
To study efficacy and predictability of toric IOL implantation for correction of preoperative corneal astigmatism by analysing spherocylindrical refractive precision and objective quality of vision.
Prospective study of 13 eyes undergoing micro-incisional cataract surgery through a 1.8mm corneal incision with toric IOL implantation (Lentis L313T(®), Oculentis) to treat over one D of preoperative corneal astigmatism. Preoperative evaluation included keratometry, subjective refraction, and total and corneal aberrometry (KR-1(®), Topcon). Six months postoperatively, measurements included slit lamp photography, documenting IOL rotation, tilt or decentration, uncorrected visual acuity, best-corrected visual acuity and objective quality of vision measurement (OQAS(®) Visiometrics, Spain).
Postoperatively, mean uncorrected distance visual acuity was 8.33/10 ± 1.91 (0.09 ± 0.11 LogMar). Mean postoperative refractive sphere was 0.13 ± 0.73 diopters. Mean refractive astigmatism was -0.66 ± 0.56 diopters with corneal astigmatism of 2.17 ± 0.68 diopters. Mean IOL rotation was 4.4° ± 3.6° (range 0° to 10°).
Mean rotation of this IOL at 6 months was less than 5°, demonstrating stability of the optic within the capsular bag. Objective quality of vision measurements were consistent with subjective uncorrected visual acuity.
Implantation of the L313T(®) IOL is safe and effective for correction of corneal astigmatism in 1.8mm micro-incisional cataract surgery.
通过分析球柱面屈光精度和客观视觉质量，研究散光型人工晶状体植入术矫正术前角膜散光的疗效和可预测性。
对13只接受1.8mm角膜切口微切口白内障手术并植入散光型人工晶状体（Lentis L313T(®)，Oculentis）以治疗超过1D术前角膜散光的眼睛进行前瞻性研究。术前评估包括角膜曲率测量、主观验光以及全眼和角膜像差测量（KR-1(®)，拓普康）。术后6个月，测量包括裂隙灯照相，记录人工晶状体的旋转、倾斜或偏心、未矫正视力、最佳矫正视力和客观视觉质量测量（OQAS(®)，西班牙Visiometrics公司）。
术后，平均未矫正远视力为8.33/10±1.91（0.09±0.11 LogMar）。术后平均屈光球镜度为0.13±0.73屈光度。平均屈光性散光为-0.66±0.56屈光度，角膜散光为2.17±0.68屈光度。人工晶状体平均旋转角度为4.4°±3.6°（范围0°至10°）。
该人工晶状体在6个月时的平均旋转角度小于5°，表明光学部在囊袋内的稳定性。客观视觉质量测量结果与主观未矫正视力一致。
在1.8mm微切口白内障手术中植入L313T(®)人工晶状体矫正角膜散光安全有效。
