Comparison Of The Argos And Iolmaster 700 Ss-Oct Based Biometers In Eyes With Long Axial Length
Published 2024
- 42nd Congress of the ESCRS
Reference: PO444
| Type: Free paper
| DOI:
10.82333/ts5p-w709
Authors:
Juan Álvarez De Toledo Elizalde* 1
, María Isabel Canut Jordana 1
, Clara Álvarez de Toledo Belil 1
, Salvador Aguilar-Córcoles 1
1Oftalvist,Barcelona,Spain
Purpose
The purpose of the present proposal was to assess the agreement between two swept-source optical coherence tomography (SS-OCT) based biometers, the Argos and the IOLMaster 700, in eyes with long axial length.
Setting
Oftalvist Clinic center (Barcelona, Spain)
Methods
Cross-sectional prospective comparative study approved by the Ethics Committee of the Hospital Clínico San Carlos and registered at German Clinical Trials (DRKS00033316). Inclusion criteria were: age from 50 to 85 years, patients with clinically significant cataract graded by the LOCS III ≤3 and axial length >25 mm. The exclusion criteria were: ocular trauma, intraocular lens surgery, poor fixation, corneal disease and any other corneal alteration that may affect the measurement process, eyes with a history of moderate to severe dry eye syndrome, any pathology of the anterior segment that may significantly affect the results, like chronic uveitis, iritis or corneal dystrophy and contact lens wear less than a week prior to ocular biometry.
Results
These are preliminary results of a larger study with 126 eyes targeted. Only one eye per patient was included in the analysis. Ocular biometry was measured 3 times which each device and measurements were randomized. The within-subject standard deviation (Sw) derived from repeated measurements of the Keratometry (K1, flat and K2, step), central corneal thickness (CCT), white-to-white (WTW), anterior-chamber-depth (ACD), lens thickness (LT) and axial length of Argos and IOL Master 700 was obtained. For between-instrument agreement, Bland-Altman plots with mean deviation and 95% limits of agreement were calculated. In addition, the percentage of failed axial length measurements for each device were also recorded.
Conclusions
This preliminary study shows the measurements obtained using two optical biometers for ocular biometers in eyes with long axial length.