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OCT for glaucoma optic nerve

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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
#1
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/28730114/diagnostic-capability-of-peripapillary-retinal-nerve-fiber-layer-parameters-in-time-domain-versus-spectral-domain-optical-coherence-tomography-for-assessing-glaucoma-in-high-myopia
#2
Mei-Ching Teng, Yi-Chieh Poon, Kuo-Chi Hung, Hsueh-Wen Chang, Ing-Chou Lai, Jen-Chia Tsai, Pei-Wen Lin, Chien-Yun Wu, Chueh-Tan Chen, Pei-Chang Wu
AIM: To evaluate and compare the diagnostic capabilities of peripapillary retinal nerve fiber layer (p-RNFL) parameters of Spectralis optical coherence tomography (OCT) versus Stratus OCT to detect glaucoma in patients with high myopia. METHODS: This is a retrospective, cross-sectional study. Sixty highly myopic eyes of 60 patients were enrolled, with 30 eyes in the glaucoma group and 30 eyes in the control group. All eyes received peripapillary imaging of the optic disc using Stratus and Spectralis OCT...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28730092/parameters-of-ocular-fundus-on-spectral-domain-optical-coherence-tomography-for-glaucoma-diagnosis
#3
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/28729947/associations-between-optic-nerve-head-related-anatomical-parameters-and-refractive-error-over-the-full-range-of-glaucoma-severity
#4
Neda Baniasadi, Mengyu Wang, Hui Wang, Mufeed Mahd, Tobias Elze
PURPOSE: To evaluate the associations between optic disc (OD)-related anatomical parameters (interartery angle [IAA] between superior and inferior temporal retinal arteries, OD tilt [TL], rotation [ROT], and torsion [TO], OD surface curvature [CUR], and central retinal vessel trunk entry point location [CRVTL] on OD) and the spherical equivalent of refractive error (SE), and to assess the impact of glaucoma severity on these relationships. METHODS: Cirrus optical coherence tomography (OCT) fundus images and 24-2 visual fields of 438 patients were included...
July 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/28728171/optical-coherence-tomography-angiography-of-the-superficial-microvasculature-in-the-macular-and-peripapillary-areas-in-glaucomatous-and-healthy-eyes
#5
Henry Shen-Lih Chen, Chun-Hsiu Liu, Wei-Chi Wu, Hsiao-Jung Tseng, Yung-Sung Lee
Purpose: To quantitatively evaluate the superficial microvasculature in the macular and peripapillary areas in glaucomatous and healthy eyes using optical coherence tomography angiography (OCT-A). Methods: We enrolled 26 eyes of medically managed primary open-angle glaucoma patients and 27 eyes of healthy subjects were enrolled in this prospective study. Measurements of OCT-A vessel density were acquired both in the macular and peripapillary areas. We compared vessel density values, the circumpapillary retinal nerve fiber layer (cpRNFL), the ganglion cell complex (GCC), and standard automated perimetry (SAP) parameters across study groups...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28727836/the-disc-damage-likelihood-scale-diagnostic-accuracy-and-correlations-with-cup-to-disc-ratio-structural-tests-and-standard-automated-perimetry
#6
Andrea C Kara-José, Luiz Alberto S Melo, Bruno L B Esporcatte, Angelica T N H Endo, Mauro Toledo Leite, Ivan Maynart Tavares
Our objective was to compare the diagnostic accuracies of and to determine the correlations between the disc damage likelihood scale (DDLS) and anatomical and functional tests used for glaucoma detection. A total of 54 healthy subjects (54 eyes) and 47 primary open-angle glaucoma patients (47 eyes) were included in this cross-sectional observational study. DDLS scores and cup-to-disc (C/D) ratios were evaluated. Subjects underwent standard automated perimetry (SAP), optic disc and retinal nerve fiber layer (RNFL) imaging with time and spectral-domain optical coherence tomography (TD and SD-OCT), Heidelberg Retina Tomograph (HRT II), and scanning laser polarimetry (GDx-VCC)...
2017: PloS One
https://www.readbyqxmd.com/read/28713646/progression-of-local-glaucomatous-damage-near-fixation-as-seen-with-adaptive-optics-imaging
#7
Donald C Hood, Dongwon Lee, Ravivarn Jarukasetphon, Jason Nunez, Maria A Mavrommatis, Richard B Rosen, Robert Ritch, Alfredo Dubra, Toco Y P Chui
PURPOSE: Deep glaucomatous defects near fixation were followed over time with an adaptive optics-scanning light ophthalmoscope (AO-SLO) to better understand the progression of these defects and to explore the use of AO-SLO in detecting them. METHODS: Six eyes of 5 patients were imaged with an AO-SLO from 2 to 4 times for a range of 14.6 to 33.6 months. All eyes had open-angle glaucoma with deep defects in the superior visual field (VF) near fixation as defined by 10-2 VFs with 5 or more points less than -15 dB; two of the eyes had deep defects in the inferior VF as well...
July 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/28687846/comparison-of-the-retinal-microvascular-density-between-open-angle-glaucoma-and-nonarteritic-anterior-ischemic-optic-neuropathy
#8
Chun-Hsiu Liu, Wei-Chi Wu, Ming-Hui Sun, Ling-Yuh Kao, Yung-Sung Lee, Henry Shen-Lih Chen
Purpose: To compare optical coherence tomography angiography (OCT-A) retinal vasculature measurements between nonarteritic anterior ischemic optic neuropathy (NAION) and open angle glaucoma (OAG) with altitudinal hemifield visual field defects. Methods: This retrospective cross-sectional study included 10 NAION eyes and 16 OAG eyes, both demonstrating hemifield visual field defects, and 27 normal eyes serving as controls. The peripapillary and macular OCT-A scans were acquired...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28683484/-retinal-nerve-fiber-layer-thickness-measurements-with-optical-coherence-tomography-in-glaucoma-patients-and-healthy-controls
#9
Christian Yahya Mardin
Thickness measurements of the retinal nerve fiber layer in glaucomas have become an important tool for diagnosis and follow-up of progression. High image resolution and advanced evaluation algorithms led to this achievement. In the following OCT anatomy, imaging technique, normative values, monitoring of progression and the influence of artefacts on OCT measurements are matter of discussion. Knowledge of capabilities and pitfalls of RNF imaging with OCT should help to integrate this technique into daily patient routine...
July 6, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28671919/evaluation-of-layer-by-layer-segmented-ganglion-cell-complex-thickness-for-detecting-early-glaucoma-according-to-different-macular-grids
#10
Hae Jin Kim, Ki Ho Park, Young Kook Kim, Jin Wook Jeoung
PURPOSE: To investigate the diagnostic performance of layer-by-layer segmented macular ganglion cell complex (GCC) thickness for detecting early glaucoma using spectral-domain optical coherence tomography (SD-OCT) with different macular grids. MATERIALS AND METHODS: Sixty-two early-stage open-angle glaucoma patients and 70 healthy subjects were enrolled in this study. The SD-OCT with automated segmentation was used to obtain macular scans with different grids of "1, 2, and 3 mm"; "1, 2...
June 30, 2017: Journal of Glaucoma
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
#11
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/28632031/mr-imaging-of-the-anterior-visual-pathway-in-primary-open-angle-glaucoma-correlation-with-octopus-101-perimetry-and-spectralis-optical-coherence-tomography-findings
#12
Mehmet Giray Ersoz, Yeliz Pekcevik, Emre Ayintap, İrfan Botan Gunes, Duygu Kunak Mart, Ersin Yucel, Gamze Türe
PURPOSE: To investigate structural changes in the visual pathway measured by magnetic resonance imaging (MRI) and its relationship with the clinical severity of glaucoma in primary open-angle glaucoma (POAG) patients. MATERIALS AND METHODS: The study included 28 patients with POAG and 26 age- and sex-matched healthy volunteers. All the subjects underwent spectral domain optical coherence tomography (OCT) of the peripapillary retina nerve fiber layer (RNFL). The optic nerve diameter (OND), chiasma height (Ch), and lateral geniculate nucleus height (LGNh) were measured bilaterally using a 1...
February 28, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28631244/optical-coherence-tomography-angiography-in-pre-perimetric-open-angle-glaucoma
#13
Gilda Cennamo, Daniela Montorio, Nunzio Velotti, Federica Sparnelli, Michele Reibaldi, Giovanni Cennamo
PURPOSE: To evaluate the diagnostic efficacy of optical coherence tomography (OCT) angiography, in patients with pre-perimetric open-angle glaucoma. METHODS: Thirty-eight consecutive eyes of 26 patients with pre-perimetric open-angle glaucoma and 48 normal eyes of 32 controls were included in this prospective study. We evaluated OCT angiography, spectral-domain OCT and visual fields parameters. Differences between controls and patients and between OCT angiography parameters and traditional glaucoma measurements were evaluated...
June 19, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28567618/ganglion-cell-loss-in-early-glaucoma-as-assessed-by-photopic-negative-response-pattern-electroretinogram-and-spectral-domain-optical-coherence-tomography
#14
Barbara Cvenkel, Maja Sustar, Darko Perovšek
PURPOSE: To evaluate discrimination ability of pattern electroretinography (PERG) and photopic negative response (PhNR) between early glaucoma and healthy controls, and their relationship with structural measurements using spectral-domain optical coherence tomography (SD-OCT). METHODS: Cross-sectional study with 34 patients with ocular hypertension (n = 7), suspect glaucoma (n = 17), and early glaucoma (n = 10), plus 24 age-matched controls. The following parameters were analyzed: P50 and N95 amplitude of the PERG, PhNR amplitude and PhNR/b-wave ratio, peripapillary retinal and macular nerve fiber layer (NFL) thicknesses, and ganglion cell complex (GCC) thickness...
May 31, 2017: Documenta Ophthalmologica. Advances in Ophthalmology
https://www.readbyqxmd.com/read/28557829/progressive-decrease-of-peripapillary-angioflow-vessel-density-during-structural-and-visual-field-progression-in-early-primary-open-angle-glaucoma
#15
Gábor Holló
PURPOSE: To present a case of early primary open-angle glaucoma in which retinal nerve fiber layer thickness (RNFLT), ganglion cell complex (GCC), and visual field progression were accompanied with significant progression of peripapillary angioflow vessel density (PAFD) measured with optical coherence tomographic angiography. METHODS: A 68-year-old female patient who was under topical intraocular pressure (IOP) lowering medication for 20 years for ocular hypertension of the right and preperimetric primary open-angle glaucoma of the left eye (with reproducible inferotemporal and superotemporal neuroretinal rim and RNFL loss) was prospectively imaged with the AngioVue OCT for RNFLT, GCC thickness, and PAFD, and investigated with the Octopus Normal G2 visual field test on the same days at 6-month intervals for 18 months, while the IOP of the left eye escaped from control...
July 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28557823/effect-of-the-eye-tracking-system-on-the-reproducibility-of-measurements-obtained-with-spectral-domain-optical-coherence-tomography-in-glaucoma
#16
Beatriz Abadia, Antonio Ferreras, Pilar Calvo, Paolo Fogagnolo, Michele Figus, Ana B Pajarin
PURPOSE: The purpose of this study was to evaluate whether the eye tracking system (ETS) improved the reproducibility of a single circle peripapillary retinal nerve fiber layer (RNFL) measurement acquired with spectral-domain optical coherence tomography (OCT). MATERIALS AND METHODS: The sample comprised 205 individuals divided into 2 groups according to intraocular pressure and visual field outcomes. A total of 100 healthy individuals and 105 patients with open-angle glaucoma underwent imaging of the optic nerve head with OCT 3 times during the same session and 2 additional times in subsequent sessions (30 days apart)...
July 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28549518/ganglion-cell-inner-plexiform-layer-change-detected-by-optical-coherence-tomography-indicates-progression-in-advanced-glaucoma
#17
Joong Won Shin, Kyung Rim Sung, Gary C Lee, Mary K Durbin, Daniel Cheng
PURPOSE: To examine the performance of Guided Progression Analysis (GPA; Carl Zeiss Meditec, Dublin, CA) in spectral-domain optical coherence tomography (OCT) in detecting progressive thinning of ganglion cell-inner plexiform layer (GCIPL) and retinal nerve fiber layer (RNFL) in glaucoma. DESIGN: Longitudinal, observational study. PARTICIPANTS: A total of 196 eyes of 123 primary open-angle glaucoma patients (mean follow-up, 5.0 years). METHODS: Macular GCIPL and peripapillary RNFL thicknesses were measured by Cirrus HD-OCT (Zeiss, Dublin, CA), and progressive GCIPL and RNFL thinning were assessed by GPA...
May 23, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28543741/detection-of-progression-of-glaucomatous-retinal-nerve-fibre-layer-defects-using-optical-coherence-tomography-guided-progression-analysis
#18
Young Hoon Hwang, Min Kyung Kim, Jae Min Wi, Jae Keun Chung, Kwan Bok Lee
PURPOSE: The aim was to investigate the agreement for detection of progression of glaucomatous retinal nerve fibre layer defects (RNFLD) between optical coherence tomography-guided progression analysis (OCT GPA) and conventional red-free fundus photography. METHODS: Four hundred and fifteen glaucomatous eyes that underwent at least four serial red-free photographic and OCT examinations were included in the study. Based on the inspection of the red-free fundus photographs and GPA maps, RNFLD progression was defined as the development of a new defect, widening or deepening of a pre-existing RNFLD in red-free fundus photography (photographic progression) or 'Likely Loss' on a GPA map (GPA progression)...
May 24, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28536832/proteomic-profiling-reveals-crucial-retinal-protein-alterations-in-the-early-phase-of-an-experimental-glaucoma-model
#19
Fabian Anders, Julia Teister, Sebstian Funke, Norbert Pfeiffer, Franz Grus, Thanos Solon, Verena Prokosch
PURPOSE: Clinical glaucoma is difficult to assess in terms of molecular pathophysiology, prompting studies in experimental models of glaucoma. The purpose of this study was to investigate quantitative changes in retinal protein expression at the onset of experimental glaucoma in rats. Analyzing the proteome provides a suitable tool to decipher the pathophysiological processes in glaucomatous degeneration. METHODS: Thermic cauterization of episcleral veins was utilized to elevate the intraocular pressure in Sprague Dawley rats...
July 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
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
#20
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...
May 6, 2017: Medical Image Analysis
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