ESCRS - PO557 - Axial Length Acquisition Success Rates And Agreement Of Two Swept-Source Optical Biometers In Eyes With Dense Cataracts

Axial Length Acquisition Success Rates And Agreement Of Two Swept-Source Optical Biometers In Eyes With Dense Cataracts

Published 2024 - 42nd Congress of the ESCRS

Reference: PO557 | Type: Free paper | DOI: 10.82333/7e93-py14

Authors: Paz Paz Orts-Vila* 1 , Pedro Tañá-Sanz 1 , Santiago Tañá-Sanz 2 , Robert Montés-Micó 3 , Pedro Tañá-Rivero 1

1Oftalvist,Alicante,Spain, 2Oftalvist,al,Spain, 3University of Valencia,Burjassot,Spain

Purpose

The purpose of the current study was to evaluate the axial length acquisition success rates and agreement of 2 swept-source optical coherence tomography (SS-OCT)-based biometers in measuring axial length and biometric parameters in eyes with dense cataracts.

Setting

Oftalvist, Alicante, Spain

Methods

This was a prospective, comparative study carried out in the Oftalvist Clinic center. It was approved by the Ethics Committee of the Hospital Clínico San Carlos and registered at the public German Clinical Trials (DRKS00032844). These are preliminary results of a larger study with 42 eyes targeted. Eyes with dense cataracts (LOCS III grade ≥4) were measured 3 consecutive times using the Eyestar 900 and Argos SS-OCT biometers. Keratometry (K1, flat and K2, step), central corneal thickness (CCT), white-to-white (WTW), anterior-chamber-depth (ACD), lens thickness (LT) and axial length parameters were measured using both biometers. % of acquisition success rate and a Bland–Altman analysis for the agreement between biometers were calculated.

Results

21 eyes of 21 patients were included in this analysis. The mean LOCS III grade was 4.42±0.67. The acquisition rate was 100% for both biometers. The average value of the axial length was 23.56±1.53 mm (from 21.24 to 27.81) and 23.53±1.48 mm (from 21.28 to 27.63) for the Eyestar 900 and Argos biometers, respectively. The agreement study for the axial length measurements revealed that the mean difference between Eyestar 900 and Argos was -0.031±0.054 mm (from -0.180 to 0.040). The mean difference for K1 and K2 was -0.079±0.167 D (from -0.180 to 0.570) and 0.182±0.205 D (from -0.200 to 0.710), respectively. The mean difference for ACD and LT was 0.094±0.020 mm (from 0.05 to 0.13) and 0.109±0.037 mm (from 0.06 to 0.21), respectively

Conclusions

This preliminary study shows the measurements obtained using two optical biometers for axial length. The two SS-OCT optical biometers showed a 100% acquisition rate in eyes with dense cataracts.