目的：评估双侧无晶状体儿童采用改良切口Ⅱ期睫状沟人工晶状体(IOL)植入术的屈光度误差及安全性。

方法：回顾性分析2020/2021接受改良切口Ⅱ期睫状沟折叠式IOL植入术的12例24眼双侧无晶状体儿童资料。分析术中、术后1 d及术后1 mo切口相关并发症的发生情况，记录最佳矫正视力(BCVA)，眼轴长度(AL)，水平角膜直径(WTW)，以及术前预留屈光度(PRD)和实际等效球镜屈光度(AESD)的屈光结果。将患者按年龄(≤7岁和>7岁)、AL(<23和≥23 mm)和WTW(≤11.5和>11.5 mm)分为两组，比较根据测量结果预测的AESD和PRD之间屈光度误差。

结果：在所有患儿中，男孩9例(75%)，女孩3例(25%)，其中2例(17%)为前囊下白内障，4例(33%)为后极性白内障，6例(50%)为核性白内障。白内障摘除时的平均年龄为6.4±1.61(3.4-8.9)mo，白内障摘除至Ⅱ期IOL植入术的平均时间间隔为6.8±1.82(4.4-11.5)a。术前平均BCVA为0.49±0.33(1.0-0.1)LogMAR，术后平均BCVA为0.38±0.32(1.0-0.0)LogMAR。平均AL为23.56±1.96(19.00-26.38)mm，平均WTW为11.5±0.92(9.3-13.9)mm，平均PRD为1.57±0.60(0.73-2.77)D，平均AESD为0.57±0.55(-0.50-1.75)D，AESD与PRD的平均差值为-0.99±0.52(-2.22-0.32)D。按年龄、AL、WTW分组的AESD、PRD差异无统计学意义(P=0.59、0.56、0.53)。

结论：无晶状体儿童采用改良切口Ⅱ期睫状沟IOL植入安全可行。在睫状沟植入IOL时，需要从公式选择的IOL度数中减去约1 D。年龄、AL和WTW对差异无显著影响。

METHODS: The data of 12 children(24 eyes)with bilateral aphakia who had undergone secondary foldable IOL implantation in the ciliary sulcus using a modified incision procedure from 2020 to 2021 were retrospectively reviewed. Incision-related complications were analyzed intraoperatively and at 1 d and 1 mo postoperatively. Best-corrected visual acuity(BCVA), axial length(AL), white-to-white(WTW), and refractive outcomes in terms of preoperative reserved diopters(PRD)and actual equivalent spherical diopters(AESD). The patients were divided into two groups by age(≤7 and >7 a), AL(<23 and ≥23 mm)and WTW(≤11.5 and >11.5mm), and the diopter errors between their AESD and PRD predicted based on the measurement results were compared.

RESULTS: The patients comprised 9(75%)boys and 3(25%)girls. Two(17%)patients had anterior subcapsular cataracts, 4(33%)had posterior polar cataracts, and 6(50%)had nuclear cataracts. The mean age at cataract extraction was 6.4±1.61(3.4-8.9)mo. The mean interval between cataract extraction and secondary IOL implantation was 6.8±1.82(4.4-11.5)a. The mean preoperative BCVA was 0.49±0.33(1.0-0.1)LogMAR. The mean postoperative BCVA was 0.38±0.32(1.0-0.0)LogMAR. The mean AL was 23.56±1.96(19.00-26.38)mm, and the mean WTW was 11.5±0.92(9.3-13.9)mm. The mean PRD was 1.57±0.60(0.73-2.77)D, the mean AESD was 0.57±0.55(-0.50 to 1.75)D, and the mean difference between the AESD and PRD was -0.99±0.52(-2.22 to 0.32)D. The differences in the AESD and PRD between the groups according to age, AL and WTW were not statistically significant(P=0.59, 0.56, and 0.53, respectively).

CONCLUSION: IOL implantation in the ciliary sulcus after a modified incision is safe and feasible for children with aphakia. It is necessary to subtract approximately 1 D of IOL power from the formula-selected power when implanting an IOL in the ciliary sulcus. Age, AL, and WTW do not significantly affect the difference.