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. 2017 Oct 18;10(10):1534-1538.
doi: 10.18240/ijo.2017.10.09. eCollection 2017.

Structure-function relationship comparison between retinal nerve fibre layer and Bruch's membrane opening-minimum rim width in glaucoma

Lukas Reznicek  1 , Sophie Burzer  1 , Andrea Laubichler  1 , Ali Nasseri  1 , Chris P Lohmann  1 , Nikolaus Feucht  1 , Michael Ulbig  1 , Mathias Maier  1
Affiliations

Structure-function relationship comparison between retinal nerve fibre layer and Bruch's membrane opening-minimum rim width in glaucoma

Lukas Reznicek et al. Int J Ophthalmol. .

Abstract

Aim: To evaluate and compare structural optical coherence tomography (OCT)-based parameters, such as Bruch's membrane opening-minimum rim width (BMO-MRW), and retinal nerve fiber layer (RNFL) thickness in glaucoma patients with visual field (VF) defects, and to correlate both to mean deviation (MD) values of obtained standard achromatic perimetry (SAP) examinations.

Methods: Patients with glaucoma and glaucomatous VF defects were enrolled in this prospective study and compared to age-matched healthy individuals. All study participants underwent a full ophthalmic examination and VF testing with SAP. Peripapillary RNFL thickness and BMO-MRW were acquired with SD-OCT. Correlation analyses between obtained global functional and global as well as sectorial structural parameters were calculated.

Results: A consecutive series of 30 glaucomatous right eyes of 30 patients were included and compared to 36 healthy right eyes of 36 individuals in the control group. Global MD of values correlated significantly with global RNFL (Pearson corr. coeff: 0.632, P=0.001) and global BMO-MRW (Pearson corr. coeff: 0.746, P<0.001) values in the glaucoma group. Global MD and sectorial RNFL or BMO-MRW values correlated less significantly. In the control group, MD values did not correlate with RNFL or BMO-MRW measurements. A subgroup analysis of myopic patients (>4 diopters) within the glaucoma group (n=6) revealed a tendency for higher correlations between MD and BMO-MRW than MD and RNFL measurements.

Conclusion: In a clinical setting, RNFL thickness and BMO-MRW correlate similarly with global VF sensitivity in glaucoma patients with BMO-MRW showing higher correlations in myopic glaucoma patients.

Keywords: Bruch's membrane opening-minimum rim width; glaucoma; myopia; optical coherence tomography; retinal nerve fibre layer; standard automated perimetry; visual field defects.

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Figures

Figure 1
Figure 1. Scatter plots between MD (y-axis) and RNFL (x-axis) as well as BMO-MRW (x-axis) values revealing a higher R2 for the correlations between MD and BMO-MRW.
See this image and copyright information in PMC

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