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Bruch's membrane opening and OCT

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https://www.readbyqxmd.com/read/29119022/bruch-s-membrane-opening-minimum-rim-width-measurement-with-sd-oct-a-method-to-correct-for-the-opening-size-of-bruch-s-membrane
#1
Robert Kromer, Martin Stephan Spitzer
A precise evaluation of the retinal nerve fiber layer thickness (RNFLT) is key for diagnosing and monitoring glaucoma. The Bruch's membrane opening minimum rim width (BMO-MRW) has been proposed as a reproducible assessment of the optic nerve. The BMO-MRW measures the minimum distance from the BMO to the internal limiting membrane. We propose an approach to correct the BMO-MRW using the BMO size for increased accuracy in interindividual comparisons in future studies. Eighty-one healthy patients received SPECTRALIS spectral domain optical coherence tomography measurements for the peripapillary RNFLT and BMO-MRW...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29101405/parapapillary-deep-layer-microvasculature-dropout-in-primary-open-angle-glaucoma-eyes-with-a-parapapillary-%C3%AE-zone
#2
Eun Ji Lee, Tae-Woo Kim, Ji-Ah Kim, Jeong-Ah Kim
Purpose: To explore the clinical characteristics of parapapillary deep-layer microvasculature dropout (MvD) associated with parapapillary γ-zone in primary open-angle glaucoma (POAG). Methods: A total of 150 eyes with POAG and 75 age- and axial length-matched control eyes, both having parapapillary γ-zone as determined by spectral-domain (SD) optical coherence tomography (OCT), were included. Parapapillary MvD was defined as a focal sectoral capillary dropout without any visible microvascular network identified in deep-layer en-face images obtained using swept-source OCT angiography (OCTA)...
November 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29066838/optimization-strategies-for-bruch-s-membrane-opening-minimum-rim-area-calculation-sequential-versus-simultaneous-minimization
#3
Philip Enders, Werner Adler, Friederike Schaub, Manuel M Hermann, Michael Diestelhorst, Thomas Dietlein, Claus Cursiefen, Ludwig M Heindl
To compare a simultaneously optimized continuous minimum rim surface parameter between Bruch's membrane opening (BMO) and the internal limiting membrane to the standard sequential minimization used for calculating the BMO minimum rim area in spectral domain optical coherence tomography (SD-OCT). In this case-control, cross-sectional study, 704 eyes of 445 participants underwent SD-OCT of the optic nerve head (ONH), visual field testing, and clinical examination. Globally and clock-hour sector-wise optimized BMO-based minimum rim area was calculated independently...
October 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29062772/structure-function-relationship-comparison-between-retinal-nerve-fibre-layer-and-bruch-s-membrane-opening-minimum-rim-width-in-glaucoma
#4
Lukas Reznicek, Sophie Burzer, Andrea Laubichler, Ali Nasseri, Chris P Lohmann, Nikolaus Feucht, Michael Ulbig, Mathias Maier
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...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29049719/intraday-repeatability-of-bruch-s-membrane-opening-based-neuroretinal-rim-measurements
#5
Philip Enders, Andreas Bremen, Friederike Schaub, Manuel M Hermann, Michael Diestelhorst, Thomas Dietlein, Claus Cursiefen, Ludwig M Heindl
Purpose: To assess possible intraday variability in Bruch's membrane opening-based (BMO) assessment of neuroretinal rim by spectral-domain optical coherence tomography (SD-OCT) of the optic nerve head (ONH) as well as to evaluate its independence from intraindividual IOP changes. Methods: In this noninterventional, prospective cohort study, 51 consecutively enrolled patients with glaucoma or ocular hypertension underwent standardized SD-OCT of the ONH and IOP assessment at two different time points with a time gap of 5 hours on the same day...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28973373/progressive-deformation-of-the-optic-nerve-head-and-peripapillary-structures-by-graded-horizontal-duction
#6
Soh Youn Suh, Alan Le, Andrew Shin, Joseph Park, Joseph L Demer
Purpose: We investigated the effect of graded range of horizontal duction on the shape of the peripapillary Bruch's membrane (ppBM) and optic nerve head (ONH). Methods: In 50 eyes of 25 normal subjects, the ONH and peripapillary retina were imaged by optical coherence tomography (OCT) in central gaze and incremental angles of add- and abduction. Displacements of the Bruch's membrane opening (BMO), optic cup (OC), and change in ONH angle in eccentric gazes were compared to those of central gaze, in add- and abduction...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28964804/differences-in-oct-assessment-of-bruch-membrane-opening-compared-to-stereoscopic-photography-for-estimating-cup-to-disc-ratio
#7
Jean-Claude Mwanza, Linda Y Huang, Donald L Budenz, Wei Shi, Gintien Huang, Richard K Lee
PURPOSE: To compare the vertical and horizontal cup-to-disc ratio (VCDR, HCDR) by an updated optical coherence tomography (OCT) Bruch's membrane opening (BMO) algorithm and stereoscopic optic disc photograph readings by glaucoma specialists. DESIGN: Reliability analysis. METHODS: 195 eyes (116 glaucoma and 79 glaucoma suspects) of 99 patients with stereoscopic photos and OCT scans of the optic discs taken during the same visit were compared...
September 27, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28930882/reproducibility-of-bruch-membrane-opening-minimum-rim-width-measurements-with-spectral-domain-optical-coherence-tomography
#8
Keunheung Park, Jinmi Kim, Jiwoong Lee
PURPOSE: To evaluate the reproducibility of Bruch membrane opening-minimum rim width (BMO-MRW) measurements obtained with Spectralis optical coherence tomography (OCT) in normal and glaucoma subjects. MATERIALS AND METHODS: In total, 123 eyes from 123 subjects (65 healthy, 58 glaucoma subjects) were included. BMO-MRW measurements were repeated 3 times during the same visit using Spectralis OCT. The BMO points and internal limiting membrane were identified with automated software and corrected manually when necessary...
November 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28922031/optic-nerve-head-characteristics-in-chronic-angle-closure-glaucoma-detected-by-swept-source-oct
#9
Dejiao Li, Taibo Li, Eleftherios I Paschalis, Haobing Wang, Elise V Taniguchi, Zi-Ning Choo, Marissa K Shoji, Scott H Greenstein, Stacey C Brauner, Angela V Turalba, Louis R Pasquale, Lucy Q Shen
PURPOSE: To compare structural features in prelaminar and laminar tissues of the optic nerve head (ONH) in chronic angle closure glaucoma (CACG), primary open angle glaucoma (POAG), and control subjects. MATERIALS AND METHODS: ONH imaging was performed using swept-source optical coherence tomography (SS-OCT) for measurements of minimum rim width at Bruch's membrane opening (BMO-MRW), horizontal, and vertical lamina cribrosa depth (LCD). Prelaminar defects, categorized as hole and wedge, and lamina cribrosa (LC) defects were identified...
November 2017: Current Eye Research
https://www.readbyqxmd.com/read/28862734/utility-of-bruch-membrane-opening-based-optic-nerve-head-parameters-in-myopic-subjects
#10
Marina Sastre-Ibañez, Jose M Martinez-de-la-Casa, Gema Rebolleda, Pilar Cifuentes-Canorea, Maria Nieves-Moreno, Laura Morales-Fernandez, Federico Saenz-Frances, Julian Garcia-Feijoo
PURPOSE: To evaluate whether the new rim analysis software with spectral-domain optical coherence tomography (SD-OCT) shows advantages over the retinal nerve fiber layer (RNFL) thickness in patients with moderate myopia. METHODS: In this prospective cross-sectional study, we studied 65 healthy subjects, 37 with spherical refractive errors in the range of -3 to -6 D (moderate, G1) and 28 with less than -3 D (low/non-myopic, G0). All patients were examined with Heidelberg Spectralis SD-OCT, including Glaucoma Premium Module Edition (GPME) software...
August 11, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28857943/visibility-of-optic-nerve-head-structures-with-spectral-domain-and-swept-source-optical-coherence-tomography
#11
Mónica M Loureiro, Jayme R Vianna, Vishva M Danthurebandara, Glen P Sharpe, Donna M Hutchison, Marcelo T Nicolela, Balwantray C Chauhan
PURPOSE: To compare the visibility of deep optic nerve head (ONH) structures and the visible area of the anterior surface of the lamina cribrosa (ASLC) with spectral-domain optical coherence tomography (SD-OCT) and swept-source OCT (SS-OCT). MATERIALS AND METHODS: In total, 33 glaucoma patients were imaged with SD-OCT (Spectralis, 24 radial B-scans centered on the ONH) and SS-OCT (Atlantis, 12 radial and a horizontal and vertical raster scan pattern containing 5 lines each, centered on the ONH)...
September 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28777226/is-the-optic-nerve-head-structure-impacted-by-a-diagnostic-lumbar-puncture-in-humans
#12
Muriel Poli, Philippe Denis, Eric Sellem, Ludwig-Serge Aho-Glélé, Alain M Bron
PURPOSE: The purpose of this study is to assess in vivo whether diagnostic lumbar puncture (LP) is followed by optic nerve head (ONH) and parapapillary anatomic changes in normal human eyes. MATERIALS AND METHODS: Prospective, single-center, observational case series. ONH structures (prelaminar tissue surface, anterior surface of the lamina cribrosa, central retinal vessels) and parapapillary structures (internal limiting membrane, posterior surfaces of retinal nerve fiber layer and Bruch membrane/retinal pigment epithelium complex, Bruch membrane opening, posterior surface of the choroid) were quantitatively evaluated by means of swept-source optical coherence tomography (Triton Ver...
August 30, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28774935/comparing-optical-coherence-tomography-radial-and-cube-scan-patterns-for-measuring-bruch-s-membrane-opening-minimum-rim-width-bmo-mrw-in-glaucoma-and-healthy-eyes-cross-sectional-and-longitudinal-analysis
#13
Sami W Kabbara, Linda M Zangwill, Rusdeep Mundae, Naama Hammel, Christopher Bowd, Felipe A Medeiros, Robert N Weinreb, Akram Belghith
AIM: To compare the cube and radial scan patterns of the spectral domain optical coherence tomography (SD-OCT) for quantifying the Bruch's membrane opening minimum rim width (BMO-MRW). METHODS: Sixty healthy eyes and 189 glaucomatous eyes were included. The optic nerve head cube and radial pattern scans were acquired using Spectralis SD-OCT. BMO-MRWs were automatically delineated using the San Diego Automated Layer Segmentation Algorithm. The BMO-MRW diagnostic accuracy for glaucoma detection and rates of change derived from the two scan patterns were compared...
August 3, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28732047/in-vivo-analysis-of-glaucoma-related-features-within-the-optic-nerve-head-using-enhanced-depth-imaging-optical-coherence-tomography
#14
Tiago S Prata, Flavio S Lopes, Vitor G Prado, Izabela Almeida, Igor Matsubara, Syril Dorairaj, Rafael L Furlanetto, Roberto M Vessani, Augusto Paranhos
Structural differences between optic nerve head (ONH) parameters in glaucomatous and non-glaucomatous eyes has been documented, however the association between such parameters in patients with different disease stages is yet to be elucidated. We investigated the relationship between different laminar and prelaminar ONH structures using enhanced depth imaging spectral-domain optical coherence tomography (EDI OCT) in a population with and without glaucoma. In this observational case-control study, we prospectively enrolled healthy individuals and glaucomatous patients with different disease stages...
2017: PloS One
https://www.readbyqxmd.com/read/28730092/parameters-of-ocular-fundus-on-spectral-domain-optical-coherence-tomography-for-glaucoma-diagnosis
#15
REVIEW
Yu-Lin Tao, Li-Ming Tao, Zheng-Xuan Jiang, He-Ting Liu, Kun Liang, Mo-Han Li, Xuan-Sheng Zhu, Yan-Lin Ren, Bing-Jie Cui
In this review, we summarize the progression of several parameters assessed by spectral-domain optical coherence tomography (SD-OCT) in recent years for the detection of glaucoma. Monitoring the progression of defects in the retinal nerve fiber layer (RNFL) thickness is essential. Imaging and analysis of retinal ganglion cells (RGCs) and inner plexiform layer (IPL), respectively, have been of great importance. Optic nerve head (ONH) topography obtained from 3D SD-OCT images is another crucial step. Other important assessments involve locating the Bruch's membrane opening (BMO), estimating the optic disc size and rim area, and measuring the lamina cribrosa displacement...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28650590/intra-and-interobserver-reproducibility-of-bruch-s-membrane-opening-minimum-rim-width-measurements-with-spectral-domain-optical-coherence-tomography
#16
Alexandre S C Reis, Camila E S Zangalli, Ricardo Y Abe, André L Silva, Jayme R Vianna, José Paulo C Vasconcellos, Vital P Costa
PURPOSE: To investigate the reproducibility of Bruch's membrane opening minimum rim width (BMO-MRW) and retinal nerve fibre layer thickness (RNFLT) measurements using spectral domain optical coherence tomography (SD-OCT). Additionally, to investigate the reproducibility of BMO area measurements and fovea to BMO centre (FoBMO) angle. METHODS: Participants were healthy subjects (n = 30) and patients with glaucoma (n = 26). One eye of each participant was scanned to obtain optic nerve head (24 radial B-scans) and peripapillary (one circular B-scan) images by three independent examiners...
June 26, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28615925/anterior-lamina-cribrosa-surface-depth-in-healthy-saudi-females
#17
Amira El-Agamy, Fayrouz Oteaf, Mohamed Berika
PURPOSE: This study was conducted to determine normative profile of anterior lamina cribrosa surface depth (ALCSD) in healthy Saudi females using Topcon Three-Dimensional (3D) Optical Coherence Tomography (OCT) 2000 - Spectral Domain (SD-OCT). In addition, the correlation between ALCSD and other clinical factors such as age, refractive error, intraocular pressure (IOP), central corneal thickness, anterior chamber depth, axial length, retinal nerve fiber layer thickness, and disk area was also assessed...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28564701/the-impact-of-lens-opacity-on-sd-oct-retinal-nerve-fiber-layer-and-bruch-s-membrane-opening-measurements-using-the-anatomical-positioning-system-aps
#18
Matthias M Mauschitz, Felix Roth, Frank G Holz, Monique M B Breteler, Robert P Finger
Purpose: To evaluate the impact of lens opacity on retinal nerve fiber layer thickness (RNFLT) and Bruch's membrane opening (BMO) measurements. Methods: Fifty-nine randomly selected patients without any other relevant ocular pathology undergoing elective routine cataract surgery in two specialized eye clinics were enrolled. RNFLT, BMO area, and BMO minimum rim width (BMO-MRW) were assessed with the Heidelberg Engineering Spectralis OCT using the anatomical positioning system (APS) prior to and 1 day after cataract surgery using a ring scan at different eccentricities of the disc (3...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28528295/a-machine-learning-graph-based-approach-for-3d-segmentation-of-bruch-s-membrane-opening-from-glaucomatous-sd-oct-volumes
#19
Mohammad Saleh Miri, Michael D Abràmoff, Young H Kwon, Milan Sonka, Mona K Garvin
Bruch's membrane opening-minimum rim width (BMO-MRW) is a recently proposed structural parameter which estimates the remaining nerve fiber bundles in the retina and is superior to other conventional structural parameters for diagnosing glaucoma. Measuring this structural parameter requires identification of BMO locations within spectral domain-optical coherence tomography (SD-OCT) volumes. While most automated approaches for segmentation of the BMO either segment the 2D projection of BMO points or identify BMO points in individual B-scans, in this work, we propose a machine-learning graph-based approach for true 3D segmentation of BMO from glaucomatous SD-OCT volumes...
July 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28490427/effect-of-acute-intraocular-pressure-elevation-on-the-minimum-rim-width-in-normal-ocular-hypertensive-and-glaucoma-eyes
#20
Sourabh Sharma, Tin A Tun, Mani Baskaran, Eray Atalay, Sri Gowtham Thakku, Zhang Liang, Dan Milea, Nicholas G Strouthidis, Tin Aung, Michael Ja Girard
BACKGROUND: To estimate and compare changes in the Bruch's membrane opening-minimum rim width (BMO-MRW) and area in normal, ocular hypertensive and glaucoma eyes following acute elevations in intraocular pressure (IOP). METHODS: The optic nerve heads (ONHs) of 104 subjects (31 normals, 20 ocular hypertension (OHT) and 53 with primary glaucoma) were imaged using Spectral-domain optical coherence tomography (OCT; Spectralis, Heidelberg Engineering, Germany). IOP was raised twice by applying a force (0...
May 10, 2017: British Journal of Ophthalmology
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