Cesk Slov Oftalmol. 2020 Winter;76(5):211-219. doi: 10.31348/2020/30.
To evaluate safety and refractive efficiency after posterior chamber diffractive implantable phakic contact lens (IPCL) surgery.
A prospective non-randomized case-series study was performed on 54 myopic eyes of 27 patients who had undergone diffractive IPCL surgery. Corneal endothelial cell density (ECD), central corneal thickness (CCT), intra-ocular pressure (IOP), vault, uncorrected distance (UDVA), spherical equivalent (SE) and defocus curve, were all evaluated twelve months after surgery. The presence of cataracts was evaluated by slit-lamp during a postoperative follow-up.
Mean age was 47 ± 2.62 years-old. Mean SE decreased, from -5.95 ± 2.56 D in a pre-operative stage, to -0.25 ± 0.25 D twelve months after surgery. Achieved UDVA was 20/20 in 24.1% of all cases, 20/25 in 74.1% of them, and 20/32 in all remaining cases. No eyes suffered lost lines of vision. The binocular defocus curve was 0.06 ± 0.05 logMAR for a -3.0 D of defocus; 0.11 ± 0.04 logMAR for a -1.5 D of defocus, and 0.08 ± 0.03 logMAR for a 0 D of defocus. Twelve months after surgery, mean ECD had decreased by 1.43 %, whereas mean CCT had increased by 0.06 %, without any significant statistical difference (p = 0.28 and p = 0.93 respectively). No difference (p: 0.86) in the vault was observed at 6 months vs.12 months, as well as between IOP measurements (p = 0.22). There were no non-intra or postoperative complications, and, specifically, no cataracts developed either.
Diffractive IPCL was implanted safely. Corneal endothelial CD, CCT, vault, and IOP remained stable twelve months after surgery. Visual acuity for distance, intermediate and near sight were achieved without spectacles.
评估后房型衍射型有晶状体眼人工晶状体（IPCL）手术后的安全性和屈光效率。
对 27 名患者的 54 只近视眼进行了前瞻性非随机病例系列研究，这些患者接受了衍射型 IPCL 手术。术后 12 个月，评估角膜内皮细胞密度（ECD）、中央角膜厚度（CCT）、眼内压（IOP）、拱高、未矫正距离（UDVA）、等效球镜（SE）和离焦曲线。术后随访时通过裂隙灯检查评估白内障的发生情况。
平均年龄为 47±2.62 岁。平均 SE 从术前的-5.95±2.56D 降低至术后 12 个月的-0.25±0.25D。所有病例中，24.1%的患者获得 20/20 的 UDVA，74.1%的患者获得 20/25 的 UDVA，所有其余患者均获得 20/32 的 UDVA。没有患者视力丧失。双眼离焦曲线在-3.0D 远视时为 0.06±0.05logMAR，-1.5D 远视时为 0.11±0.04logMAR，0D 远视时为 0.08±0.03logMAR。术后 12 个月，平均 ECD 下降 1.43%，而平均 CCT 增加 0.06%，无统计学差异（分别为 p=0.28 和 p=0.93）。6 个月和 12 个月时拱高无差异（p=0.86），IOP 测量值也无差异（p=0.22）。无术中或术后并发症，也未发生白内障。
衍射型 IPCL 安全植入。术后 12 个月，角膜内皮 CD、CCT、拱高和 IOP 保持稳定。远、中、近视力无需眼镜即可获得。
