ESCRS - FP05.05 - Intraocular Lens Calculation Using The Axial Length Of The Fellow Eye In Eyes Undergoing Combined Phacoemulsification And Silicone Oil Removal After Retinal Detachment

Intraocular Lens Calculation Using The Axial Length Of The Fellow Eye In Eyes Undergoing Combined Phacoemulsification And Silicone Oil Removal After Retinal Detachment

Published 2023 - 41st Congress of the ESCRS

Reference: FP05.05 | Type: Free paper | DOI: 10.82333/r1nn-6c60

Authors: Klemens Paul Kaiser* 1 , Christoh Martin Lwowski 1 , Julian Bucur 1 , Thomas Kohnen 1

1Department of Ophthalmology,Goethe University Franfurt,Frankfurt am Main,Germany

Purpose

To evaluate whether the axial length of the fellow eye can be used to calculate the intraocular lens (IOL) in eyes with a retinal detachment, and which formula is most suitable.

Setting

Retrospective, consecutive case series conducted at the Department of Ophthalmology, Goethe University, Frankfurt, Germany.

Methods

Our study was conducted at the Department of Ophthalmology, Goethe University, Frankfurt, Germany, and included patients who underwent silicone oil removal combined with phacoemulsification and IOL implantation. Preoperative examinations included biometry (IOL Master 700, Carl Zeiss Meditec AG, Jena, Germany). For IOL calculation we used the axial length of the fellow eye and compared the mean prediction error (MPE) and mean and median absolute prediction error of following formulas:  Kane, Hill - Radial Basis Function (Hill-RBF), Barrett Universal II (BUII), and the Barrett Universal II using the AL of the operated eye (BUII – OE). Additionally, we compared the number of eyes within ±0.5, ±1.0, and ±2.0D from target refraction.

Results

In total, 77 eyes of 77 patients met our inclusion criteria. MedAE was lowest for the BUII-OE (0.42D) compared to Kane (1.08D), BUII (1.02D), and Hill RBF (1.03D) This was highly significant (p < 0.001). The same does account for the number of eyes within ±0.5D of the target refraction with the BUII-OE (44 eyes, 57%) outperforming the Hill-RBF (20 eyes, 25.9%), Kane and BUII formula (21 eyes, 27.2% each).

Conclusions

Our results show a statistically and clinically highly relevant reduction of IOL power predictability when using the AL of the partner eye for IOL calculation. Therefore, a two-step procedure using the AL of the operated eye after reattachment of the retina is highly recommended if possibly.