Agreement Between Three Biometers In Eyes With Cataract

Published 2024 - 42nd Congress of the ESCRS

Reference: PP07.08 | Type: Poster | DOI: 10.82333/59eq-ed75

Authors: Mo Ziaei* ¹ , Siamak Zarei-Ghanavati ² , M. Nikpayam ² , M. Namdari ² , E. Bakhtiari ² , S. Hassanzadeh ²

¹Ophthalmology,University of Auckland,Auckland,New Zealand, ²Mashhad University of Medical Sciences,Eye Research Center,Mashhad,Iran, Islamic Republic Of

Purpose

To assess the agreement between biometric parameters measured by a spectral-domain optical coherence tomography optical biometer device (Optopol Revo NX) with a validated swept-source biometer (IOLMaster 700) and a validated optical low-coherence reflectometry biometer (Lenstar LS 900), in cataract surgery candidates.

Setting

Tertiary referral centre.

Methods

In this prospective comparative study, 100 patients (100 eyes) who were eligible for cataract surgery were involved. Bland-Altman plots were used to assess agreement between devices for biometric parameters including axial length (AL), anterior chamber depth (ACD), lens thickness (LT), and central corneal thickness (CCT).

Results

AL measurements were successful in 82 eyes with Revo NX, in 91 eyes with Lenstar LS 900, and in 97 eyes with IOLMaster 700. When Revo NX was compared to IOL Master 700 and Lenstar LS 900, the mean differences were as follows: -0.02 ± 0.02 mm and -0.02 ± 0.03 mm (P = 0.313, P = 0.525) for AL, 0.01 ± 0.03 mm and 0.10 ± 0.03 mm (P = 0.691, P = 0.002) for ACD, -0.15 ± 0.03 mm and 0.001 ± 0.04 mm (P < 0.001, P = 0.95) for LT, and -2.29 ± 0.92 μm, and 0.73 ± 1.43 μm (P = 0.015, P = 0.612) for CCT. Three devices were highly correlated for AL, ACD, LT, and CCT (interclass correlation coefficient > 0.75). Bland-Altman plots showed a narrower 95% limit of agreement (-0.35 to 0.31) between Revo NX and IOLMaster 700 in measuring AL.

Conclusions

Despite the higher measurement failure rate in eyes with cataract, the Revo NX showed very good agreement with the IOLMaster 700 and Lenstar LS 900 optical biometers in measuring AL, ACD, LT, and CCT. However, ACD and LT measurements cannot be considered interchangeable between these devices.