Bruch's membrane opening detection accuracy in healthy and glaucoma eyes with and without axial high myopia in an American and Korean cohort

2021 ◽  
Author(s):  
Jasmin Rezapour ◽  
James A. Proudfoot ◽  
Christopher Bowd ◽  
Jade Dohleman ◽  
Mark Christopher ◽  
...  
Keyword(s):  
High Myopia ◽  
Detection Accuracy ◽  
Bruch's Membrane ◽  
Bruch’S Membrane ◽  
Bruch’S Membrane Opening

scholarly journals Bruch’s membrane opening minimum rim width and peripapillary retinal nerve fibre layer thickness measurement in myopic eyes with glaucoma

2021 ◽  
Vol 3 (2) ◽  
pp. 78-90
Author(s):  
Tun Wang Ch’ng ◽  
Jin Poi Tan ◽  
Hilda Adnan Tassha ◽  
Bt Ja’afar Farrah ◽  
Bin Mt Saad Ahmad
Keyword(s):  
Nerve Fibre ◽  
High Myopia ◽  
Retinal Nerve Fibre Layer ◽  
Reference Points ◽  
Diagnostic Agreement ◽  
Bruch's Membrane ◽  
Bruch’S Membrane ◽  
Fibre Layer ◽  
Bruch’S Membrane Opening ◽  
Nerve Fibre Layer

Introduction: Optic nerve head imaging in myopic eyes with glaucoma is challenging due to atypical myopic optic disc morphology. Peripapillary retinal nerve fibre layer (pRNFL) and Bruch’s membrane opening-minimum rim width (BMO-MRW) utilize different anatomical reference points to measure the retinal nerve fibre layer. Purpose: To evaluate the diagnostic agreement between BMO-MRW and pRNFL in glaucomatous eyes with varying degrees of myopia. Design: Prospective observational study. Methods: Forty-three eyes diagnosed as primary open-angle glaucoma, normal-tension glaucoma, and primary angle-closure glaucoma with varying degrees of myopia were included in the study. Geometric measurement of the neuroretinal rim tissue was conducted with spectral domain optical coherence tomography (SD-OCT) usingtwo different parameters: BMO-MRW and pRNFL. The classification of scan quality and diagnostic agreement between both methods were compared using an exact McNemar’s test. The association between the summary classifications of quality scans with myopic degree was assessed with Fisher’s exact test. Results: BMO-MRW had a higher percentage of good quality image scans compared to pRNFL (p = 0.004). BMO-MRW was capable of obtaining equally good quality scans for glaucomatous eyes with various myopic degrees, whereas pRNFL demonstrated a significant statistical difference between mild, moderate, and high myopia(p = 0.001). pRNFL was difficult to identify in highly myopic eyes. By excluding poor quality scans, the diagnostic agreement between both modalities was 48.4% (p = 0.002). The observed agreement was higher in low myopia (66.7%), followed by moderate myopia (28.6%) and high myopia (16.7%). Conclusion: Compared to pRNFL, BMO-MRW is a better diagnostic imaging modality in glaucoma, especially for eyes with high myopia. Scan quality must be considered when interpreting OCT result in daily clinical practice to yield more accurate and reliable results.

Bruch’s membrane opening-minimum rim width: An alternative OCT biomarker study for multiple sclerosis

2021 ◽  
pp. 112067212199663
Author(s):  
Kemal Turgay Özbilen ◽  
Tuncay Gündüz ◽  
Selva Nur Çukurova Kartal ◽  
Ali Ceyhun Gedik ◽  
Mefküre Eraksoy ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
High Sensitivity ◽  
The Novel ◽  
Bruch's Membrane ◽  
Bruch’S Membrane ◽  
Spectral Domain Oct ◽  
Neuroretinal Rim ◽  
Bruch’S Membrane Opening ◽  
The Difference ◽  
Therapeutic Decision Making

Purpose: Bruch’s membrane opening-minimum rim width (BMO-MRW) and RNFL measured using anatomic positioning system (APS-RNFL) are novel OCT methods and remained unexplored in MS patients. To investigate the novel parameters of spectral-domain OCT as an alternative biomarker in patients with multiple sclerosis (MS). Methods: Retrospective cohort study; participants consisted of relapsing-remitting MS (RRMS) patients and healthy controls (HC). Eyes were classified according to the presence of MS and previous optic neuritis (ON). Measurements of standard peripapillary RNFL (S-RNFL), BMO-MRW, and APS-RNFL were performed. Result: A total of 244 eyes of 122 participants (MS-patients: 63, HC: 59) were included in the study. Fifty-one eyes had a history of previous ON. In almost all measured parameters, neuroretinal rim thicknesses were observed the thinnest in eyes with ON history between all subgroups. S-RNFL and APS-RNFL techniques showed the difference in neuroretinal rim thickness in all three subjects (ON+, ON−, and HC). However, BMO-MRW, on the other hand, could not distinguish between ON(−) patients and HC. The relationship between OCT parameters and EDSS were observed only in eyes with an ON history in all three techniques. A meaningful model with 78% accuracy was obtained by using only the OCT parameters as risk factors. In the ROC analysis, no parameters were found to have acceptable high sensitivity and specificity. BMO-MRW was statistically weaker in every aspect than other RNFL techniques. Conclusion: The novel APS-RNFL technique appears to be a bit more reliable alternative to S-RNFL technique to support therapeutic decision-making in MS. BMO-MRW has not been found as a successful alternative to S-RNFL.

Influence of uveitis on Bruch’s membrane opening minimum rim width and retinal nerve fibre layer thickness measurements

2018 ◽  
Vol 103 (10) ◽  
pp. 1413-1417 ◽  
Author(s):  
Matthias F Kriegel ◽  
Arnd Heiligenhaus ◽  
Carsten Heinz
Keyword(s):  
Layer Thickness ◽  
Nerve Fibre ◽  
Retinal Nerve Fibre Layer ◽  
Bruch's Membrane ◽  
Bruch’S Membrane ◽  
Fibre Layer ◽  
Bruch’S Membrane Opening ◽  
Nerve Fibre Layer ◽  
Active Inflammation ◽  
The Impact

Background/aimsTo assess the impact of papillary leakage and active inflammation on optical coherence tomography (OCT)-based retinal nerve fibre layer thickness (RNFLT) and Bruch’s membrane opening minimum rim width (BMO-MRW) measurements in uveitic eyes with and without secondary glaucoma.MethodsProspective, single-centre analysis of patients with uveitis. All patients included received a fluorescein angiography examination and an OCT scan measuring the BMO-MRW and the RNFLT in three concentric peripapillary ring scans.ResultsOverall, 95 eyes of 56 patients were enrolled. Papillary leakage and active inflammation were present in 39 (41%) and 57 (60%) eyes, respectively. Twenty-one eyes were classified as glaucomatous; 10 of those glaucomatous eyes showed papillary leakage. Both BMO-MRW and RNFLT measurements were significantly increased in eyes with papillary leakage (BMO-MRW: p=0.0001; RNFLT: first to third ring (p<0.0001)). Active inflammation led to a significantly thickened RNFLT (first ring: p=0.0026; second ring: p=0.0009; third ring: p=0.0002) while only a trend towards increased values could be observed in the BMO-MRW measurements (p=0.3063). Glaucomatous eyes with papillary leakage demonstrated significantly higher values on both BMO-MRW and RNFLT measurements than glaucomatous eyes without leakage (BMO-MRW: p=0.0159; RNFLT: first ring: p=0.0062; second ring: p=0.0037; third ring: p=0.0197). No significant difference could be observed between glaucomatous eyes with leakage and non-glaucomatous eyes without leakage (BMO-MRW: p=0.4132; RNFLT: first ring: p=0.5412; second ring: p=0.3208; third ring: p=0.1164).ConclusionsThe OCT scanning parameters BMO-MRW and RNFLT were significantly influenced by papillary leakage in uveitic eyes with and without glaucoma. RNFLT values were also significantly increased while active inflammation was present. In patients with uveitis, these OCT-based imaging tools should be interpreted with caution, especially in those with papillary leakage or active inflammation.

scholarly journals Factors Associated with Increased Neuroretinal Rim Thickness Measured Based on Bruch’s Membrane Opening-Minimum Rim Width after Trabeculectomy

2021 ◽  
Vol 10 (16) ◽  
pp. 3646
Author(s):  
Do-Young Park ◽  
Soon-Cheol Cha
Keyword(s):  
Open Angle Glaucoma ◽  
Bruch's Membrane ◽  
Bruch’S Membrane ◽  
Fiber Layer ◽  
Factors Associated ◽  
Nerve Fiber Layer Thickness ◽  
Neuroretinal Rim ◽  
Before And After ◽  
Bruch’S Membrane Opening ◽  
Sd Oct

Purpose: To investigate the factors associated with an increase in the neuroretinal rim (NRR) thickness measured based on Bruch’s membrane opening-minimum rim width (BMO-MRW) after trabeculectomy in patients with primary open-angle glaucoma (POAG). Methods: We analyzed the BMO-MRW using spectral-domain optical coherence tomography (SD-OCT) of patients with POAG who underwent a trabeculectomy for uncontrolled intraocular pressure (IOP) despite maximal IOP reduction treatment. The BMO-MRW was measured before and after trabeculectomy in patients with POAG. Demographic and systemic factors, ocular factors, pre- and post-operative IOP, and visual field parameters were collected, together with SD-OCT measurements. A regression analysis was performed to investigate the factors that affected the change in the BMO-MRW after the trabeculectomy. Results: Forty-four eyes of 44 patients were included in the analysis. The IOP significantly decreased from a preoperative 27.0 mmHg to a postoperative 10.5 mmHg. The mean interval between the trabeculectomy and the date of post-operative SD-OCT measurement was 3.3 months. The global and sectoral BMO-MRW significantly increased after trabeculectomy, whereas the peripapillary retinal nerve fiber layer thickness did not show a difference between before and after the trabeculectomy. Younger age and a greater reduction in the IOP after the trabeculectomy were significantly associated with the increase in the BMO-MRW after trabeculectomy. Conclusions: The NRR thickness measured based on the BMO-MRW increased with decreasing IOP after trabeculectomy, and the increase in the BMO-MRW was associated with the young age of the patients and greater reduction in the IOP after trabeculectomy. Biomechanically, these suggest that the NRR comprises cells and substances that sensitively respond to changes in the IOP and age.

scholarly journals Bruch’s membrane opening enlargement and its implication on the myopic optic nerve head

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Mi Sun Sung ◽  
Min Young Heo ◽  
Hwan Heo ◽  
Sang Woo Park
Keyword(s):  
Optic Nerve ◽  
Optic Nerve Head ◽  
Lamina Cribrosa ◽  
Cross Sectional Study ◽  
Multivariate Regression Model ◽  
Bruch's Membrane ◽  
Bruch’S Membrane ◽  
Cross Sectional ◽  
Bruch’S Membrane Opening ◽  
Parapapillary Atrophy

AbstractWe examined the association between Bruch’s membrane opening (BMO) area and various ocular parameters and investigated the implication of BMO enlargement on the myopic optic nerve head. One hundred eighty-five myopic eyes were included in this cross-sectional study. Among the included eyes, 53 having axial lengths between 26 and 27 mm were further analyzed to investigate the association between BMO area and various ocular parameters. BMO area, BMO-minimum rim width (BMO-MRW), peripapillary choroidal thickness (pCT), width of β-parapapillary atrophy with and without Bruch’s membrane (PPA+BM and PPA−BM), and presence of lamina cribrosa (LC) defect were evaluated. We found that BMO area tended to increase with increasing axial length, but varied among the highly myopic eyes even though they had similar degrees of myopia. In the subgroup analysis of eyes with axial lengths between 26 and 27 mm, BMO area was highly variable and it significantly correlated with PPA−BM width and temporal-inferior, nasal-inferior, and nasal BMO-MRW and pCT. LC defects were more common in myopic eyes with enlarged BMO. A multivariate regression model revealed that higher intraocular pressure, enlarged BMO, and thinner BMO-MRW were associated with LC defects in highly myopic eyes. These findings should be considered when evaluating myopic eyes.

scholarly journals Bruch’s Membrane Opening Minimum Rim Width in the Differential Diagnosis of Optic Neuropathies

2019 ◽  
Vol 44 (2) ◽  
pp. 76-88
Author(s):  
Joana Braga ◽  
Ricardo Soares ◽  
Mónica Loureiro ◽  
Lígia Ribeiro ◽  
Dália Meira
Keyword(s):  
Differential Diagnosis ◽  
Bruch's Membrane ◽  
Bruch’S Membrane ◽  
Bruch’S Membrane Opening
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