Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-Ro 43-Gil, Songpa-Gu, Seoul, 05505, South Korea.
Eyejun Ophthalmic Clinic, Seoul, Korea.
Sci Rep. 2021 Feb 26;11(1):4794. doi: 10.1038/s41598-021-84238-1.
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.
我们旨在比较使用标准角膜曲率计（K）和总角膜曲率计（TK）的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 302 例接受多焦点 IOL 植入的白内障手术患者。预测的屈光结果基于当前的标准公式和一种新的基于 K 和 TK 的 TK 公式计算，该公式从扫频源光学生物测量仪获得。术后 2 个月，分析中位绝对预测误差（MedAE）和预测术后等效球镜（SE）屈光度在±0.50 屈光度（D）内的眼数比例。在每个公式中，K 和 TK 的 MedAE 或预测屈光度在±0.50D 内的眼数比例均无显著差异。在 TFNT00 和 839MP IOL 病例中，任何公式下 K 和 TK 的 MedAE 均无差异。在 829MP IOL 病例中，Barrett Universal II/Barrett TK Universal II 中 TK 的 MedAE 明显大于 K（P=0.033）。在 677MY IOL 病例中，Haigis（P=0.020）和 Holladay 2（P=0.006）公式中 TK 的 MedAE 明显大于 K。在 IOL 的亚组分析中，任何公式下 K 和 TK 的预测屈光度在±0.50D 内的眼数比例均无差异。TK 对 TFNT00 和 839MP IOL 有利，而 K 对 677MY IOL 有利，829MP IOL 处于中性位置，这需要研究新的 TK 技术的准确性。
