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Abstract：
Background/Objectives: This study aimed to examine the postoperative changes in the corneal biomechanical properties between solo cataract surgery and solo microhook ab interno trabeculotomy (LOT). Methods: This retrospective case-control study included 37 eyes belonging to 26 patients who underwent solo cataract surgery and 37 eyes belonging to 31 patients who underwent solo µLOT. These two groups were matched according to their preoperative intraocular pressure (IOP), axial length (AL), and age. Corneal Visualization Scheimpflug Technology (Corvis ST) was used to obtain four biomechanical parameters representing the corneal stiffness or corneal deformation at the highest concavity, including stiffness parameter A1 (SP-A1), stress-strain index (SSI), peak distance (PD), and deflection amplitude max (DefAmpMax). These parameters were compared preoperatively and 6 months postoperatively, and between the two surgical groups. Results: Preoperatively, the patients\' IOP, age, and AL, as well as their results in four Corvis ST parameters, were similar between the two groups (p > 0.05). No significant difference was observed in SP-A1; however, PD and DefAmpMax were significantly larger, and SSI was significantly smaller postoperatively in the LOT group than in the cataract group. Conclusions: Corneal stiffness was reduced, and the cornea was more deformed with LOT than cataract surgery.
摘要：
背景/目标：本研究旨在检查单独白内障手术和单独的微钩ab间小梁切开术（LOT）之间角膜生物力学特性的术后变化。方法：这项回顾性病例对照研究包括26例接受单独白内障手术的患者的37只眼和31例接受单独µLOT的患者的37只眼。根据术前眼压（IOP）对两组进行匹配，轴向长度（AL），和年龄。角膜可视化Scheimpflug技术（CorvisST）用于获得四个生物力学参数，这些参数代表最高凹处的角膜刚度或角膜变形，包括刚度参数A1（SP-A1），应力-应变指数（SSI），峰值距离(PD),和偏转幅度max（DefAmpMax）。这些参数在术前和术后6个月进行比较，在两个手术组之间。结果：术前，患者的眼压，年龄,AL,以及他们在四个CorvisST参数中的结果，两组间相似(p>0.05)。在SP-A1中没有观察到显著差异；然而，PD和DefAmpMax明显更大，LOT组术后SSI明显小于白内障组。结论：角膜僵硬度降低，角膜比白内障手术更变形。
