Comparison of swept-source and enhanced depth imaging spectral-domain optical coherence tomography in quantitative characterisation of the optic nerve head

Abstract

LCDH, LCDV and thinnest BMO-MRW measurements are not interchangeable between SS-OCT and EDI-OCT, but show good intrareader and inter-reader reproducibility and interdevice agreement for quantitative characterisation of the ONH, particularly among patients with glaucoma.

Intra‐ and interobserver reproducibility of Bruch's membrane opening minimum rim width measurements with spectral domain optical coherence tomography

“…In a comparison of swept‐source and enhanced depth imaging SD OCT, Li et al. () performed a small reproducibility analysis of BMO‐MRW measurements and found ICCs ≥0.989 and ≥0.966 for the intrareader and inter‐reader, respectively. C.Y.…”

“…Although BMO‐MRW measurements can be obtained in a commercially available SD‐OCT device (Spectralis; Heidelberg Engineering GmbH, Heidelberg, Germany), BMO‐MRW reproducibility has been reported in only one study (Li et al. ). The purpose of this study was to investigate the reproducibility of BMO‐MRW and RNFLT measurements acquired relative to the FoBMO axis with SD‐OCT.…”

Thin minimal rim width at Bruch’s membrane opening is associated with glaucomatous paracentral visual field loss

“…Some subjects were part of a prior study by this group comparing SS-OCT and EDI-OCT in measuring quantitative parameters of the ONH. 17 …”

“…The BMO-MRW was measured within the ONH from radial B-scans. As previously described, 17 the internal limiting membrane was automatically delineated, and BMO was manually identified. Subsequently, the minimum distance from BMO to internal limiting membrane was automatically identified and calculated on each side of the 12 radial scans (total of 24 measurements per eye).…”

“…The LCD was measured in one horizontal and in one vertical scan, which were selected from all scans at 90° and 180° for the best visualization of the anterior LC surface and best centration. 17 After the manual delineation of the anterior surface of LC, a reference line connecting BMO was drawn. An ImageJ plugin calculated the perpendicular distance from the reference line to the anterior surface of LC every 100 μm along the reference line ( Figure 2 ) and generated the mean measurement.…”