Masayuki Ouchi Eye Clinic, 9-1 Nishikujo Ohkuni-cho, Minami-ku, Kyoto, 601-8449, Japan.
Sci Rep. 2024 Feb 12;14(1):3484. doi: 10.1038/s41598-024-52913-8.
Sulcus-to-sulcus vertical diameter is longer than the horizontal. However, the effect of vertical positioning of the implantable collamer lens (ICL) on the vault compared to preoperative prediction is unclear. This prospective consecutive case series aimed to examine postoperative and preoperative predicted vaults during vertical ICL fixation. This study assessed 180 right eyes in 180 patients with myopic astigmatism. For the 90 eyes in 90 patients who underwent horizontal fixation (horizontal group) and 90 eyes in 90 patients who underwent vertical fixation (vertical group), biometrics by three-dimensional tomography of the anterior segment optical coherence tomography (A-OCT) was performed before surgery and 2 h, 1 day, 1 week, 1 month and 3 months after surgery. The anterior chamber depth did not change over time in both groups, and there was no significant difference from preoperative values. The postoperative vault values were significantly lower in the vertical group than in horizontal group over time. The difference between vault measurements and preoperative predictions at all postoperative time points was significantly greater in the vertical group than in horizontal group. Vertical fixation of the ICL reduced the vault by > 100 μm compared with horizontal fixation, which was different from the A-OCT preoperative predicted value.
垂直径线的角膜缘内切口间距大于水平径线。然而，植入性 Collamer 透镜（ICL）垂直定位对拱高的影响与术前预测相比尚不清楚。本前瞻性连续病例系列研究旨在检查垂直 ICL 固定术后和术前预测的拱高。本研究评估了 180 例近视散光患者的 180 只右眼。90 只眼（90 例患者）行水平固定（水平组），90 只眼（90 例患者）行垂直固定（垂直组）。手术前和手术后 2 小时、1 天、1 周、1 个月和 3 个月，通过三维前节光学相干断层扫描（A-OCT）对生物测量进行评估。两组的前房深度随时间无变化，与术前值无显著差异。垂直组术后拱高值随时间逐渐低于水平组。与水平组相比，垂直组在所有术后时间点的拱高测量值与术前预测值的差异均显著更大。与水平固定相比，ICL 的垂直固定使拱高降低>100μm，与 A-OCT 术前预测值不同。
