Factors influencing the reliability of measurements in eyes with full-thickness macular holes: are we measuring incorrectly?

Autor: Assad Jalil, Tsveta Ivanova, Nouf Alnafisee, George Moussa, Myrta Lippera
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: BMJ Open Ophthalmology, Vol 9, Iss 1 (2024)
Druh dokumentu: article
ISSN: 2397-3269
DOI: 10.1136/bmjophth-2023-001531
Popis: Purpose The calliper function is used for manual measurements of full thickness macular holes (FTMHs). We aimed to investigate whether a reproducible difference could be detected beyond interobserver variability between two commonly used manufacturers in their manual calliper facility in spectral domain optical coherence tomography (OCT) for metrics related to FTMH.Methods This is a non-interventional, retrospective, observational study. Two independent observers examined 8 eyes (16 OCT) scans and 128 measurements (minimal linear diameter (MLD), basal diameter and hole height on both sides) of FTMHs, taken on Heidelberg Spectralis and Topcon Triton (OCT machines). The interobserver agreement and OCT machine agreement of measurements were analysed by Bland-Altman plots and intraclass correlation coefficient (ICC) analysis. Spectralis and Triton had 125 µm and 50 µm horizontal b-scan spacing, respectively.Results Overall, we report high absolute agreement in interobserver (ICC 0.991 (95% CI 0.985 to 0.995, p
Databáze: Directory of Open Access Journals