TY - JOUR
T1 - Clinical feasibility of the ESCRS IOL power calculator
AU - Pomberger, Leon
AU - Tasch, Lisa
AU - Mayer-Xanthaki, Christoph
AU - Reifeltshammer, Sophia A
AU - Bolz, Matthias
AU - Hirnschall, Nino
N1 - Copyright © 2025 Published by Wolters Kluwer on behalf of ASCRS and ESCRS.
PY - 2025/6/1
Y1 - 2025/6/1
N2 - PURPOSE: To assess the mean absolute error (MAE) of classic and modern intraocular lens (IOL) power calculation formulas to evaluate the feasibility of the ESCRS IOL Calculator.SETTING: Department of Ophthalmology, Johannes Kepler University and Kepler University Clinic, Linz, Austria; Department of Ophthalmology, Medical University Graz, Graz, Austria.METHODS: 337 eyes of 337 patients who underwent implantation of a monofocal IOL (PCB00) were included in this study. The classic IOL calculation formulas output by the biometry device (Barrett Universal II [BUII], Haigis, SRK/T, and HofferQ) and modern formulas implemented in the ESCRS calculator (BUII, Cooke K6, EVO, Hill-RBF, Hoffer QST, Kane, and Pearl-DGS) were evaluated. The MAE, the number of eyes within ±0.5, ±1.0, ±1.5, ±2.0 diopters (D) of the target refraction, the agreement between ESCRS formulas on the proposed IOL power, and the time factor for the input in the ESCRS calculator were evaluated.RESULTS: The best performing ESCRS calculator formulas were Kane, EVO, and BUII with a MAE (SD) of 0.37 (0.30) D, 0.37 (0.32) D, and 0.38 (0.32) D. A lower, but not significant difference in MAE for ESCRS formulas compared with biometry formulas was observed. A significant difference was observed between Hoffer QST and all other formulas (P < .01 for all). After excluding Hoffer QST, testing revealed a significant difference between ESCRS and biometry formulas (P = .004).CONCLUSIONS: The ESCRS calculator allows efficient and up-to-date IOL calculations in routine clinical practice. The predictive accuracy of the ESCRS calculator is superior compared with older biometric formulas.
AB - PURPOSE: To assess the mean absolute error (MAE) of classic and modern intraocular lens (IOL) power calculation formulas to evaluate the feasibility of the ESCRS IOL Calculator.SETTING: Department of Ophthalmology, Johannes Kepler University and Kepler University Clinic, Linz, Austria; Department of Ophthalmology, Medical University Graz, Graz, Austria.METHODS: 337 eyes of 337 patients who underwent implantation of a monofocal IOL (PCB00) were included in this study. The classic IOL calculation formulas output by the biometry device (Barrett Universal II [BUII], Haigis, SRK/T, and HofferQ) and modern formulas implemented in the ESCRS calculator (BUII, Cooke K6, EVO, Hill-RBF, Hoffer QST, Kane, and Pearl-DGS) were evaluated. The MAE, the number of eyes within ±0.5, ±1.0, ±1.5, ±2.0 diopters (D) of the target refraction, the agreement between ESCRS formulas on the proposed IOL power, and the time factor for the input in the ESCRS calculator were evaluated.RESULTS: The best performing ESCRS calculator formulas were Kane, EVO, and BUII with a MAE (SD) of 0.37 (0.30) D, 0.37 (0.32) D, and 0.38 (0.32) D. A lower, but not significant difference in MAE for ESCRS formulas compared with biometry formulas was observed. A significant difference was observed between Hoffer QST and all other formulas (P < .01 for all). After excluding Hoffer QST, testing revealed a significant difference between ESCRS and biometry formulas (P = .004).CONCLUSIONS: The ESCRS calculator allows efficient and up-to-date IOL calculations in routine clinical practice. The predictive accuracy of the ESCRS calculator is superior compared with older biometric formulas.
KW - Humans
KW - Biometry/instrumentation
KW - Lenses, Intraocular
KW - Feasibility Studies
KW - Optics and Photonics
KW - Lens Implantation, Intraocular
KW - Refraction, Ocular/physiology
KW - Female
KW - Aged
KW - Middle Aged
KW - Male
KW - Phacoemulsification
KW - Aged, 80 and over
KW - Visual Acuity/physiology
KW - Adult
KW - Pseudophakia/physiopathology
UR - https://www.scopus.com/pages/publications/105006908350
U2 - 10.1097/j.jcrs.0000000000001637
DO - 10.1097/j.jcrs.0000000000001637
M3 - Article
C2 - 40421847
SN - 0886-3350
VL - 51
SP - 504
EP - 510
JO - Journal of Cataract and Refractive Surgery
JF - Journal of Cataract and Refractive Surgery
IS - 6
ER -