We aimed to compare the refractive outcomes of cataract surgery with diffractive multifocal intraocular lenses (IOLs) using standard keratometry (K) and total keratometry (TK). In this retrospective observational case series study, a total of 302 patients who underwent cataract surgery with multifocal IOL implantation were included. Predicted refractive outcomes were calculated based on the current standard formulas and a new formula developed for TK using K and TK, which were obtained from a swept-source optical biometer. At 2-month postoperatively, median absolute prediction errors (MedAEs) and proportion of eyes within ± 0.50 diopters (D) of predicted postoperative spherical equivalent (SE) refraction were analyzed. There was no significant difference between MedAEs or proportion of eyes within ± 0.50D of predicted refraction from K and TK in each formula. In TFNT00 and 839MP IOL cases, there was no difference between MedAEs from K and TK using any formula. In 829MP IOL cases, MedAE from TK was significantly larger than that from K in Barrett Universal II/Barrett TK Universal II (P = 0.033). In 677MY IOL cases, MedAE from TK was significantly larger than that from K in Haigis (P = 0.020) and Holladay 2 (P = 0.006) formulas. In the subgroup analysis for IOL, there was no difference between the proportion of eyes within ± 0.50 D of predicted refraction from K and TK using any formula. TFNT00 and 839MP IOLs were favorable with TK, with 677MY IOL with K and 829MP IOL being in a neutral position, which necessitates the study that investigates the accuracy of the new TK technology.

我们旨在使用标准角膜曲率测定法 (K) 和总角膜曲率测定法 (TK) 比较白内障手术与衍射多焦点人工晶状体 (IOL) 的屈光结果。在这项回顾性观察性病例系列研究中，共纳入了 302 名接受白内障手术并植入多焦人工晶状体的患者。预测的屈光结果是根据当前的标准公式和使用 K 和 TK 为 TK 开发的新公式计算的，这些公式是从扫源光学生物计获得的。在术后 2 个月，分析了中位绝对预测误差 (MedAE) 和预测术后等效球面 (SE) 屈光度 ± 0.50 屈光度 (D) 内的眼睛比例。MedAEs 或眼睛比例在 ± 0 内没有显着差异。每个公式中 K 和 TK 的预测折射的 50D。在 TFNT00 和 839MP IOL 病例中，使用任何公式的 K 和 TK 的 MedAE 之间没有差异。在829MP IOL病例中，TK的MedAE明显大于Barrett Universal II/Barrett TK Universal II中K的MedAE（P  = 0.033）。在677MY IOL病例中，来自TK的MedAE显着大于来自Haigis（P  = 0.020）和Holladay 2（P  = 0.006）公式的K。在 IOL 的亚组分析中，使用任何公式，K 和 TK 的预测屈光度在 ± 0.50 D 以内的眼睛比例之间没有差异。TFNT00 和 839MP IOL 对 TK 有利，677MY IOL 和 K 和 829MP IOL 处于中立位置，这需要研究新 TK 技术的准确性。