Purpose: To assess how intraocular lens (IOL) power prediction error (PE) changes after implantation of a single-piece acrylic IOL (SP-AIOL) and to investigate the factors related to PE change
Patients and methods: This study targeted 217 eyes of 217 patients scheduled for implantation of one of four types of SP-AIOLs (Alcon SN60WF, Santen W-60R, HOYA XY-1, or AMO ZCB00V). PE and absolute value of error were evaluated at 1 day, 1 month, and 2 months postoperatively, and changes over time were investigated. Anterior chamber depth (ACD), average K, central corneal thickness (CCT), axial length, and thickness of the retina in the fovea were measured, and predictors significantly associated with PE change were assessed using multiple regression analysis.
Results: The mean PE showed a myopic change of -0.3516 diopter (D) between 1 day and 1 month postoperatively and of -0.0531 D between 1 and 2 months postoperatively; the changes during both intervals were statistically significant (p ≤ 0.0127). The absolute value of error also significantly decreased between 1 day and 1 month postoperatively (p<0.0001). Changes in ACD, average K, CCT, and axial length were significant predictors of PE change. PE change was significantly smaller in the eyes implanted with SN60WF than in those implanted with the other IOLs (p ≤ 0.0006).
Conclusions: The mean PE predominantly changed within 1 month after SP-AIOL implantation, and changes in ACD, average K, CCT, and axial length were significant predictors of PE change. Moreover, PE change differed among the four SP-AIOLs.
Nippon Ganka Gakkai Zasshi (J Jpn Ophthalmol Soc) 124: 759-764, 2020.