From the Department of Ophthalmology, National Hospital Organization, Tokyo Medical Center, Meguro-ku, Tokyo, Japan (Goto, Ogawa, Sugiyama, Matsumaru, Noda); Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan (Goto, Maeda); Herbert Wertheim School Optometry and Vision Science, University of California, Berkeley, California (Goto); Laboratorio de Lente Verde, Sodegaura, Chiba, Japan (Ohnuma); VO, Toda, Saitama, Japan (Lawu).
J Cataract Refract Surg. 2024 May 1;50(5):492-497. doi: 10.1097/j.jcrs.0000000000001397.
To investigate the difference between the segmented axial length (AL) and the composite AL on a swept-source optical coherence tomography biometer and to evaluate the subsequent effects on artificial intelligence intraocular lens (IOL) power calculations: the Kane and Hill-RBF 3.0 formulas compared with established vergence formulas.
National Hospital Organization, Tokyo Medical Center, Japan.
Retrospective case series.
Consecutive patients undergoing cataract surgery with a single-piece IOL were reviewed. The prediction accuracy of the Barrett Universal II, Haigis, Hill-RBF 3.0, Hoffer Q, Holladay 1, Kane, and SRK/T formulas based on 2 ALs were compared for each formula. The heteroscedastic test was used with the SD of prediction errors as the endpoint for formula performance.
The study included 145 eyes of 145 patients. The segmented AL (24.83 ± 1.89) was significantly shorter than the composite AL (24.88 ± 1.96, P < .001). Bland-Altman analysis revealed a negative proportional bias for the differences between the segmented AL and the composite AL. The SD values obtained by Hoffer Q, Holladay 1, and SRK/T formulas based on the segmented AL (0.52 diopters [D], 0.54 D, and 0.50 D, respectively) were significantly lower than those based on the composite AL (0.57 D, 0.60 D, and 0.52 D, respectively, P < .01).
The segmented ALs were longer in short eyes and shorter in long eyes than the composite ALs. The refractive accuracy can be improved in the Hoffer Q, Holladay 1, and SRK/T formulas by changing the composite ALs to the segmented ALs.
研究扫频源光相干断层生物测量仪上分段眼轴（AL）与组合 AL 的差异，并评估其对人工智能人工晶状体（IOL）功率计算的后续影响：与已建立的会聚公式相比，Kane 和 Hill-RBF 3.0 公式。
日本东京医疗中心国立医院组织。
回顾性病例系列。
回顾性分析接受单焦点 IOL 白内障手术的连续患者。比较了基于 2 个 AL 的 Barrett Universal II、Haigis、Hill-RBF 3.0、Hoffer Q、Holladay 1、Kane 和 SRK/T 公式的预测准确性。使用预测误差的 SD 作为公式性能的终点进行异方差检验。
本研究纳入了 145 名患者的 145 只眼。分段 AL（24.83±1.89）明显短于组合 AL（24.88±1.96，P<0.001）。Bland-Altman 分析显示分段 AL 和组合 AL 之间的差异存在负比例偏差。基于分段 AL 的 Hoffer Q、Holladay 1 和 SRK/T 公式的 SD 值（分别为 0.52 屈光度[D]、0.54 D 和 0.50 D）明显低于基于组合 AL 的 SD 值（分别为 0.57 D、0.60 D 和 0.52 D，P<0.01）。
短眼的分段 AL 比组合 AL 长，长眼的分段 AL 比组合 AL 短。通过将组合 AL 更改为分段 AL，可以提高 Hoffer Q、Holladay 1 和 SRK/T 公式的屈光准确性。
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