PURPOSE To compare the accuracy of the eight formulas for intraocular lens (IOL) power calculation in pediatric cataract patients. METHODS A retrospective study. A total of 68 eyes (68 patients) that underwent uneventful cataract surgery and posterior chamber IOL implantation in the capsular bag were enrolled. We compared the calculation accuracy of the 8 formulas at 1 month postoperatively and performed subgroup analysis according to age or axial length (AL). RESULTS The mean age at surgery was 34.07 ± 24.60 months and mean AL was 21.12 ± 1.42 mm. The mean prediction errors (PE) of eight formulas for all patients were as follows: SRK II (- 0.66), SRK/T (- 0.44), Holladay 1 (- 0.36), Hoffer Q (- 0.09), Olsen (0.71), Barrett (0.37), Holladay 2 (- 0.70), and Haigis (0.50). There was significant difference among the 8 formulas (p < 0.0001), while no significant difference of absolute PE was found among the 8 formulas in all patients (p = 0.053). Moreover, in patients younger than 2 years old or with AL ≤ 21 mm, SRK/T formula was relatively accurate in 34% and 39% of eyes, respectively. While in patients older than 2 or with AL > 21 mm, Barrett and Haigis formulas were better (58% and 47% for Barrett, 52% and 53% for Haigis). CONCLUSION Overall, in patients younger than 2 years old or with AL ≤ 21 mm, SRK/T formulas were relatively accurate, while Barrett and Haigis formulas were better in patients older than 2 or with AL > 21 mm.

中文翻译：

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小儿白内障患者8个人工晶状体屈光力计算公式的准确性。

目的比较儿童白内障患者人工晶状体（IOL）屈光度计算八个公式的准确性。方法回顾性研究。总共纳入了68眼（68例患者），他们接受了无畸形白内障手术并在囊袋中植入了后房IOL。我们比较了术后1个​​月这8个公式的计算准确性，并根据年龄或轴向长度（AL）进行了亚组分析。结果手术的平均年龄为34.07±24.60个月，平均AL为21.12±1.42 mm。所有患者的八个公式的平均预测误差（PE）如下：SRK II（-0.66），SRK / T（-0.44），Holladay 1（-0.36），Hoffer Q（-0.09），Olsen（0.71） ，巴雷特（0.37），霍拉迪2（-0.70）和海吉斯（0.50）。8个公式之间存在显着差异（p <0.0001），而在所有患者的8种配方中，绝对PE均未发现显着差异（p = 0.053）。此外，对于年龄小于2岁或AL≤21 mm的患者，SRK / T公式分别在34％和39％的眼睛中相对准确。在2岁以上或AL> 21 mm的患者中，Barrett和Haigis配方更好（Barrett为58％和47％，Haigis为52％和53％）。结论总体而言，对于2岁以下或AL≤21 mm的患者，SRK / T公式相对准确，而Barrett和Haigis公式在2岁以上或AL> 21 mm的患者中较好。在2岁以上或AL> 21 mm的患者中，Barrett和Haigis配方更好（Barrett为58％和47％，Haigis为52％和53％）。结论总体而言，对于2岁以下或AL≤21 mm的患者，SRK / T公式相对准确，而Barrett和Haigis公式在2岁以上或AL> 21 mm的患者中较好。在2岁以上或AL> 21 mm的患者中，Barrett和Haigis配方更好（Barrett为58％和47％，Haigis为52％和53％）。结论总体而言，对于2岁以下或AL≤21 mm的患者，SRK / T公式相对准确，而Barrett和Haigis公式在2岁以上或AL> 21 mm的患者中较好。