Intraocular Lens Power Calculation For Optic Capture In Pediatric Eyes
Published 2024 - 42nd Congress of the ESCRS
Reference: FP10.10 | Type: Free paper | DOI: 10.82333/erq7-qn12
Authors: Dominik Knebel* 1 , Oliver Ehrt 1 , Günther Rudolph 1 , Lieselotte Rudolph 1 , Theresia Ring 1 , Claudia Priglinger 1 , Siegfried Priglinger 1
1Ophthalmology,University Hospital, LMU Munich,Munich,Germany
Purpose
The purpose of this study is to compare the prediction error of different intraocular lens (IOL) power calculation formulas in pediatric eyes that underwent primary IOL implantation in the ciliary sulcus with optic capture.
Setting
Department of Ophthalmology at the University Hospital of Ludwig-Maximilians-University (LMU) in Munich, Germany.
Methods
We conducted a retrospective chart review of n=15 eyes of 14 children that underwent lensectomy with primary implantation of one type of three-piece IOL in the ciliary sulcus with optic capture. The charts were reviewed for IOL power and actual postoperative objective refraction (spherical equivalent (SE)). The postoperative refraction (SE) as predicted by Haigis, Barret Universal II (BU II), HofferQ, SRK/T, Holladay 1 and Holladay 2 formulas was calculated. The predictive error (PE) and absolute predictive error (APE) for each formula was calculated. A Friedman-test was used to compare the different formulas with regards to their respective APE.
Results
Median age at surgery was 38.8 months (range 9.8 to 60.7 months), median axial length (AL) was 21.4mm (range 16.4 to 24.7mm), median IOL power was +22.5dpt (range +6.0 to +26.0dpt) and median actual postoperative SE was +3.5dpt (range +1.0dpt to +10.0dpt). Mean PE for Haigis, BU II, HofferQ, SRK/T, Holladay 1 and 2 formulas was +0.95dpt, +0.06dpt, +0.50dpt, -0.04dpt, +0.09dpt and -0.12dpt, respectively. Mean APE was +1.48dpt, +1.48dpt, +1.47dpt, +1.26dpt, +1.36dpt and +1.24dpt, respectively (p > 0.05). We observed an APE ≤0.5dpt in 27% of eyes for Haigis, 14% for BU II, 20% for HofferQ, 27% for SRK/T, 20% for Holladay 1 and 27% for Holladay 2 as well as an APE >2.0dpt in 20%, 21%, 33%, 27%, 27% and 13% of eyes, respectively.
Conclusions
The lowest mean APE was obtained using the Holladay 2 and SRK/T formulas, while Haigis, BU II and HofferQ showed the larges mean APE. These differences are not statistically significant, however, and interpretation of the data is limited by the small cohort size. A consensus on which IOL formula to use for optic capture in pediatric patients has yet to be found, and the analysis of long-term refractive results is of special future interest.