Choi Young, Eom Youngsub, Song Jong Suk, Kim Hyo Myung
Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea.
Department of Ophthalmology, Ansan Hospital, Korea University College of Medicine, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15355, South Korea.
BMC Ophthalmol. 2017 Dec 28;17(1):261. doi: 10.1186/s12886-017-0664-3.
To evaluate the effect of different adjustments of the refractive outcome of the first eye according to corneal power (K) in order to improve the intraocular lens (IOL) power calculation of the second eye in the SRK/T formula.
One hundred thirty-four patients who underwent uncomplicated bilateral, sequential phacoemulsification with AcrySof IQ implantation were enrolled. The optimal partial adjustment of the refractive outcome of the first eye according to K was retrospectively analyzed using a regression formula.
In all patients, the optimal partial adjustment of the refractive outcome of the first eye was calculated as 56%. For K values between 42.8 D and 44.6 D, the optimal partial adjustment was calculated as 30%; however, this adjustment of the first eye did not significantly improve the refractive outcome in the second eye of the subgroup with K values between 42.8 D and 44.6 D. For K values greater than 44.6 D or less than 42.8 D, the optimal partial adjustments were calculated as 69% and 81%, respectively. According to these results, the adjustment of the first eye significantly improved the refractive outcome in the second eye from 0.36 to 0.26 D (P < 0.001) in the entire data set. This result was significantly lower than that using a single partial adjustment (56%) (0.28 D; P = 0.027).
For K values greater than 44.6 D or less than 42.8 D, an approximately 70-80% adjustment of the first eye error should be considered. In contrast, for K values between 42.8 D and 44.6 D, a 30% or less adjustment should be considered in the SRK/T formula.
根据角膜屈光度（K）评估对第一眼屈光结果进行不同调整以改善SRK/T公式中第二眼人工晶状体（IOL）屈光度计算的效果。
纳入134例行单纯双侧、序贯式超声乳化联合AcrySof IQ人工晶状体植入术的患者。使用回归公式回顾性分析根据K对第一眼屈光结果进行的最佳部分调整。
在所有患者中，第一眼屈光结果的最佳部分调整计算为56%。对于42.8 D至44.6 D之间的K值，最佳部分调整计算为30%；然而，在K值为42.8 D至44.6 D的亚组中，对第一眼的这种调整并未显著改善第二眼的屈光结果。对于大于44.6 D或小于42.8 D的K值，最佳部分调整分别计算为69%和81%。根据这些结果，在整个数据集中，对第一眼的调整显著改善了第二眼的屈光结果，从0.36 D降至0.26 D（P < 0.001）。该结果显著低于使用单一部分调整（56%）时的结果（0.28 D；P = 0.027）。
对于大于44.6 D或小于42.8 D的K值，应考虑对第一眼误差进行约70 - 80%的调整。相比之下，对于42.8 D至44.6 D之间的K值，在SRK/T公式中应考虑30%或更低的调整。
