摘要
目的 分析有晶状体眼后房型人工晶状体植入（implantable collamer lens，ICL）术人群角膜直径与前房角直径的一致性。方法 回顾性系列病例研究。选取2019年1月至12月于西安爱尔眼科医院屈光中心行ICL患者160例160眼，分别用Pentacam、Topolyzer、IOL Master500及规尺测量角膜直径（White-to-white measurement, WTW）；HD-OCT测量前房角直径（Angle-to-angle diameter, ATA）。以HD-OCT测量ATA值及ACD值为依据计算（STAAR系统）ICL型号尺寸，根据ICL晶体型号将受检者分为4组（12.1、12.6、13.2、13.7），4组内ATA与WTW分别进行Pearson相关、组内相关系数（ICC）法及Bland-Altman法分析。结果 4种型号ICL植入术后6月拱高分别为305.41±45.22μm、417.61±101.27μm、486.37±83.82μm、597.41±185.25μm；4组内ATA与4种仪器测量的WTW值间两两配对差异具有统计学意义(P＜0.01）；4组内ATA与WTW值间ICC为0.619-0.898；12.6和13.2组ATA与WTW之间存在强相关(r=0.718-0.881，0.816-0.868；P＜0.01)，12.1和13.7组ATA与WTW之间存在弱相关 (r=0.641-0.724，0.621-0.694；P＜0.01)。结论 以ATA为基础计算的ICL术后拱高预测性可，12.6和13.2型号的ATA与WTW测量一致性佳。
关键词： 有晶状体眼后房型人工晶状体植入术（ICL）；角膜直径；前房角直径
Abstract
Objective To analyze the consistency of corneal diameter and anterior chamber diameter in Phakic eyes with posterior chamber intraocular lens implantation (implantable collamer lens, ICL). Methods Retrospective series of case studies. 160 cases (160 eyes) of ICL ametropia were performed in the refractive center of Xi'an Aier Eye Hospital from January to December 2019. The corneal diameter (White-to-white measurement, WTW) was measured with Pentacam, Topolyzer, IOL Master500 and ruler before operation. The diameter of anterior chamber (Angle-to-angle diameter, ATA) was measured by HD-OCT. Based on the values of ATA and ACD measured by HD-OCT, ICL implantation was performed by on-line calculation (STAAR system). According to the models of ICL lens implanted, all patients were divided into 4 groups (12.1,12.6,13.2,13.7). WTW and ATA in the four groups were analyzed by Pearson correlation, intra-group correlation coefficient (ICC) and Bland-Altman method. Results The average vault of the four models 6 months after ICL implantation were 305.41 ±45.22 μm, 417.61 ±101.27 μm, 486.37 ±83.82μm and 597.41 ±185.25μm,There was significant difference between ATA and WTW measured by four kinds of instruments in pairwise pairs among the four groups (P< 0.01). The ICC between ATA and WTW in 4 groups is 0.619-0.898. There was a strong correlation between ATA and WTW in 12.6 and 13.2 groups (r = 0.718-0.881, 0.816-0.868, P < 0.01). There was a weak correlation between ATA and WTW in groups 12.1 and 13.7 (r = 0.641-0.724 ,0.621-0.694, P < 0.01). Conclusion s The postoperative average vault of ICL calculated on the basis of ATA is ideal and predictable, 12.6,13.2 models of ATA and WTW have good consistency in measurement.
Key words： Implantable Collamer Lens; Corneal Diameter; Anterior Chamber Diameter
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