ESCRS - PP23.04 - Intraocular Lens Power Calculation In Myopic Eyes Undergoing Bilensectomy: Analysis Of Comparability And Accuracy

Intraocular Lens Power Calculation In Myopic Eyes Undergoing Bilensectomy: Analysis Of Comparability And Accuracy

Published 2025 - 43rd Congress of the ESCRS

Reference: PP23.04 | Type: Free paper | DOI: 10.82333/vp7e-z042

Authors: Carlos Palomino Bautista* 1 , Ana Diaz Hurtado 2 , Ricardo Cuiña Sardiña 1

1QuironSalud,Madrid,Spain, 2Oftalmos,Madrid,Spain

Purpose

To address the calculation of intraocular lens (IOL) power in myopic eyes undergoing simultaneous anterior or posterior chamber phakic IOL (pIOL) explantation and lens extraction surgery, a procedure known as bilensectomy, in comparison to myopic eyes without pIOL (controls).

Setting

Department of Ophthalmology, Goethe-University, Frankfurt, Germany.

Methods

Retrospective analysis of comparability and accuracy. IOLMaster 700 (Zeiss Meditec AG) and Pentacam AXL (Oculus Optikgeräte GmbH) were used for biometry. IOL power was calculated using the Barrett Universal II (BUII), Cooke K6, Hoffer-QST, EVO 2.0, PEARL-DGS, Hill-RBF, and Kane formulas included in the ESCRS online calculator, as well as the T2 and Ladas super formula and the SRK/T and Holladay 1 with or without Wang-Koch axial length adjustment.

Results

Sixty eyes (mean axial length: 29.1±20.6 mm) of 60 patients (mean age 57.4±10.9 years) were included. Thirty eyes underwent bilensectomy and 30 served as controls. In bilensectomy eyes, Kane (0.53 D), PEARL-DGS (0.56 D), and Hill-RBF (0.61 D) demonstrated the lowest root-mean square of the absolute error. PEARL-DGS demonstrated the highest percentage of eyes within ±0.25D (46.7%), followed by BUII, Hill-RBF, and Kane (40.0%, each). EVO 2.0 showed a significant difference (p=0.001) in mean PE between the bilensectomy group and the control group. All other formulas showed no significant differences between the two groups (each p>0.05).

Conclusions

Simultaneous explantation of a pIOL does not appear to exert a considerable impact on the IOL power calculation in myopic eyes. The performance of the formulas is comparable to myopic eyes without phakic IOLs.