目的：研究低中度近视患者在不同前房深度分组下水平睫状沟直径(HCS)、垂直睫状沟直径(VCS)与角膜直径的相关性。方法：回顾性研究。纳入2021-04/2022-04于上海普瑞眼科医院行有晶状体眼后房型人工晶状体(ICL)植入术前检查的低中度近视患者78例129眼，测量HCS、VCS、角膜水平直径(WTW)并进行比较。根据Pentacam测量所得中央前房深度(ACD)分为浅前房组(2.8mm≤ACD≤3.2mm)、中前房组(3.2mm<ACD≤3.4mm)、深前房组(ACD>3.4mm)3组，对各组组内及组间HCS、VCS、WTW进行比较，采用Pearson积矩直线相关分析及线性回归方程分析各组内WTW、HCS、VCS间的相关性。结果：总体及各前房深度组内，WTW与HCS间均无差异(P>0.05)，而VCS与HCS、WTW均有差异(P<0.01)。各组内WTW与HCS、VCS均有相关性，但深前房组WTW与VCS间线性回归相关性较弱(r=0.470，R2=0.221，P<0.01)； 浅前房WTW、HCS、VCS与中前房组、深前房比较均有差异(P<0.01)。结论：低中度近视患者行ICL手术，WTW不能完全替代HCS，但可使用WTW预测HCS； 且因随前房深度增加WTW对VCS的预测性降低，而不能预测VCS。

AIM: To determine the correlation among horizontal ciliary sulcus(HCS)diameter, vertical ciliary sulcus(VCS)diameter and corneal diameter in different anterior chamber depth(ACD)levels from patients with low to moderate myopia.METHODS: Retrospective study. A total of 78 patients(129 eyes)with low to moderate myopia who had preoperative examination of implantable contact lens(ICL)implantation in Shanghai Bright Eye Hospital from April 2021 to April 2022 were included. HCS, VCS and white to white(WTW)were measured and compared. Patients were divided into shallow ACD group(2.8 mm ≤ ACD ≤3.2 mm), medium ACD group(3.2 mm < ACD ≤3.4 mm)and deep ACD group(ACD > 3.4 mm)based on the ACD obtained by Pentacam. The HCS, VCS and WTW within and among groups were compared, and the correlation of WTW, HCS and VCS among each group was analyzed by Pearson and linear regression equation.RESULTS: There was no statistical difference in WTW and HCS overall and in groups with different ACD(P>0.05), while there was difference between VCS and both HCS and WTW(P<0.01). The WTW had a correlation with both HCS and VCS in each group, while correlation between WTW and VCS was weak in the deep ACD group(r=0.470, R2=0.221, P<0.01). Furthermore, the WTW, HCS and VCS in the shallow ACD group were statistically different from those in the medium and deep ACD groups(P<0.01).CONCLUSION: The WTW was suggested predicting HCS rather than perfectly replacing HCS before patients had the ICL operation among patients with low to moderate myopia. The predictability of VCS would decline as the ACD depth increasing, predicting VCS by WTW was not recommended.