Evaluation Of Escrs Online Calculator Performance For The Yamane Technique Of Secondary Iol Fixation
Published 2025 - 43rd Congress of the ESCRS
Reference: PO449 | Type: Free paper | DOI: 10.82333/wpxr-5e33
Authors: Alexander II Lanzuela Gonzales* 1 , Jorge Alió Del Barrio 2 , Hao Zhang 2 , Mario Cantó-Cerdán 3 , Antonio Martínez Abad 3 , Pilar Yebana 3
1Cornea, Cataract and Refractive Surgery Unit,Vissum Grupo Miranza,Alicante,Spain;Department of Ophthalmology,Ospital ng Makati,Makati,Philippines;Department of Cornea and Refractive Surgery,Shinagawa Lasik and Aesthetics Center,Taguig,Philippines, 2Cornea, Cataract and Refractive Surgery Unit,Vissum Grupo Miranza,Alicante,Spain;Division of Ophthalmology, School of Medicine,Universidad Miguel Hernández,Alicante,Spain, 3Cornea, Cataract and Refractive Surgery Unit,Vissum Grupo Miranza,Alicante,Spain
Purpose
To evaluate the ESCRS online calculator for intraocular lens (IOL) calculation in patients had secondary IOL fixation by the Yamane Technique.
Setting
Department of Ophthalmology, Zonguldak Bülent Ecevit University, Zonguldak, Türkiye
Methods
Eyes that received secondary IOL implantation (Acrysof SN60AT) with Yamane technique were included to the study. We compared the mean prediction error (MPE), mean and median absolute prediction error (MAE, MedAE) of formulas provided by the recently introduced online calculator provided by the ESCRS with the SRK/T formula, as well as the number of eyes within ±1.0 D and ±2.0 D of target refraction. Postoperative spherical equivalent was measured by retinoscopy 4 to 12 weeks postoperatively.
Results
27 eyes from 27 patients with a mean age of 72.4 ± 9.4 years met the inclusion criteria. The mean axial length was 23.48 ± 0.84 mm and the mean
postoperative spherical equivalent (SE) was +0.14 ± 0.91 D. The MedAE was lowest in the Hill-RBF and HofferQ formulas (0.38 D and 0.40 D, respectively) and followed by Pearl DGS (0.58 D), EVO (0.60 D), Kane (0.61 D), SRK-T and Barret (both 0.67 D). All of these values were significantly above zero (p<0.001), but no statistical significance was found between them (p=0.536). All of the formulae showed similar
results in the percentage of eyes within ±1.0 D and ±2.0 D of target refraction (66,6%for ±1.0 D, and 100% for ±2.0 D).
Conclusions
Using modern IOL calculation formulas provided by the ESCRS calculator provides good refractive predictability for the Yamane technique of secondary IOL fixation.