ESCRS - PO452 - Consensus Between Two Biometers With Ss-Oct Technology And Different Axial Length Measurement Methods.

Consensus Between Two Biometers With Ss-Oct Technology And Different Axial Length Measurement Methods.

Published 2024 - 42nd Congress of the ESCRS

Reference: PO452 | Type: Free paper | DOI: 10.82333/taqc-q171

Authors: Martin Puzo-Bayod* 1 , Marta Jiménez-García 2 , Francisco J Segura-Calvo 1 , Luis E Pablo-Julvez 3 , Francisco J Castro Alonso 4

1Unidad de Cirugía Faco-Refractiva (UFR),Hospital Provincial Nuestra Señora de Gracia,Zaragoza ,Spain;Instituto de investigación Sanitaria de Aragón (IIS-A),GIMSO,Zaragoza ,Spain;Cirugía,Universidad de Zaragoza,Zaragoza ,Spain, 2Unidad de Cirugía Faco-Refractiva (UFR),Hospital Provincial Nuestra Señora de Gracia,Zaragoza ,Spain;Instituto de investigación Sanitaria de Aragón (IIS-A),GIMSO,Zaragoza ,Spain;Física Aplicada,Universidad de Zaragoza,Zaragoza ,Spain, 3Unidad de Cirugía Faco-Refractiva (UFR),Hospital Provincial Nuestra Señora de Gracia,Zaragoza ,Spain;Instituto de investigación Sanitaria de Aragón (IIS-A),GIMSO,Zaragoza ,Spain;Cirugía,Universidad de Zaragoza,Zaragoza ,Spain;Chief of department (Ophthalmology),Hospital Universitario Miguel Servet,Zaragoza ,Spain, 4Unidad de Cirugía Faco-Refractiva (UFR),Hospital Provincial Nuestra Señora de Gracia,Zaragoza ,Spain;Instituto de investigación Sanitaria de Aragón (IIS-A),GIMSO,Zaragoza,Spain;Cirugía,Universidad de Zaragoza,Zaragoza ,Spain

Purpose

To evaluate the agreement between two biometry devices with SS-OCT technology, Argos and IOLMaster700.

Setting

Faco-refractive Surgery Unit (UFR) of the Provincial Hospital Nuestra Señora de Gracia (Zaragoza, Spain).

Methods

The Bland-Altman analysis was used to evaluate the agreement between the devices for flat keratometry (K1), curved (K2), lens thickness (LT), anterior chamber depth (ACD), white-to-white (WTW), and axial length (AL). The paired T-test was used to check the correlation for variables that followed normality, and the Wilcoxon test for those that did not. The AL correlation was analyzed for small (<22mm), medium (22mm-24.5mm), moderately large (>24.5mm-26mm), and large (>26mm) eyes independently. Finally, the differences in the calculation of an estimated intraocular lens (ENVISTA B&L) in extreme eyes (<22mm or >26mm) were studied using four formulas (Barret Universal II, EVO, HofferQST, KANE, Pearl DGS).

Results

201 eyes of cataract patients were included. Statistically significant differences were found for all variables (p<0.05). Comparing Argos with IOLMaster700, differences were: ACD:+0.13, LT:+0.09, WTW:-0.08 for normal variables, and AL:-0.03, K1:+0.18, K2:+0.18 for those that did not follow normality. Subgroup correlation analysis for AL found differences (p<0.05) in short eyes (Argos having higher values; AL(SD):+0.04(0.03)) and large eyes (Argos having lower results; AL(SD):-0.24 (0.19)). As for the estimated intraocular lens, significant differences were found in large eyes for all formulas (p<0.05), where Barret UII had the smallest difference (0.32±0.42) and EVO the largest (0.42±0.64). No significant differences found in short eyes.

Conclusions

This study found statistically and clinically significant differences between Argos and IOLMaster 700, particularly in extreme values. The biometric parameters studied cannot be considered interchangeable between devices.