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OCT for glaucoma optic nerve

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https://www.readbyqxmd.com/read/29917000/four-questions-for-every-clinician-diagnosing-and-monitoring-glaucoma
#1
Donald C Hood, Carlos G De Moraes
We pose four questions for the clinician diagnosing and monitoring glaucoma, and supply evidence-based answers. The first question is: "When do you perform a 10-2 (2° grid) visual field test?" We argue the best answer is: anyone you would do, or have done, a 24-2 (6° grid) visual field on should have both a 24-2 and a 10-2 visual field within the first two visits. Second, "When do you perform an optical coherence tomography (OCT) scan of the macula?" We argue that, if you are performing an OCT test, then it should include both the macula and disc, either as a single scan or as two scans, one centered on the macula and the other on the disc...
June 18, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29907322/macular-and-optic-nerve-head-vessel-density-and-progressive-retinal-nerve-fiber-layer-loss-in-glaucoma
#2
Sasan Moghimi, Linda M Zangwill, Rafaella C Penteado, Kyle Hasenstab, Elham Ghahari, Huiyuan Hou, Mark Christopher, Adeleh Yarmohammadi, Patricia Isabel C Manalastas, Takuhei Shoji, Christopher Bowd, Robert N Weinreb
PURPOSE: To investigate prospectively the relationship between macular and peripapillary vessel density and progressive retinal nerve fiber layer (RNFL) loss in patients with mild to moderate primary open-angle glaucoma. DESIGN: Prospective, observational study. PARTICIPANTS: One hundred thirty-two eyes of 83 patients with glaucoma followed up for at least 2 years (average: 27.3±3.36 months). METHODS: Measurements of macular whole image vessel density (m-wiVD) and optic nerve head whole image vessel density (onh-wiVD) were acquired at baseline using OCT angiography...
June 12, 2018: Ophthalmology
https://www.readbyqxmd.com/read/29881648/comparison-of-widefield-and-circumpapillary-circle-scans-for-detecting-glaucomatous-neuroretinal-thinning-on-optical-coherence-tomography
#3
Zhichao Wu, Denis S D Weng, Abinaya Thenappan, Rashmi Rajshekhar, Robert Ritch, Donald C Hood
Purpose: Our purpose was to compare the effectiveness of detecting progressive retinal nerve fiber layer (RNFL) thickness changes using widefield scans compared to circumpapillary circle scans derived from optic disc volume scans when using a manual region-of-interest (ROI) approach . Methods: In a prospective observational study, a total of 125 eyes diagnosed clinically with glaucoma or suspected glaucoma that had both widefield (12 × 9 mm) and optic disc (6 × 6 mm) scans obtained at least one year apart were included...
May 2018: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/29879152/diagnostic-ability-of-inner-macular-layers-to-discriminate-early-glaucomatous-eyes-using-vertical-and-horizontal-b-scan-posterior-pole-protocols
#4
Maria P Bambo, Beatriz Cameo, Ruben Hernandez, Enrique Fuentemilla, Noemi Güerri, Blanca Ferrandez, Vicente Polo, Jose M Larrosa, Luis E Pablo, Elena Garcia-Martin
PURPOSE: To evaluate the diagnostic ability of macular ganglion cell (mGCL) and macular retinal nerve fiber (mRNFL) layers, to detect early glaucomatous eyes, using the new segmentation software of Spectralis optical coherence tomography (OCT) device (Heidelberg Engineering). METHODS: A total of 83 eyes from 83 subjects were included in this observational, prospective cross-sectional study: 43 healthy controls and 40 early primary open-angle glaucoma (POAG) patients...
2018: PloS One
https://www.readbyqxmd.com/read/29862185/vessel-density-in-oct-angiography-permits-differentiation-between-normal-and-glaucomatous-optic-nerve-heads
#5
Claudia Lommatzsch, Kai Rothaus, Joerg Michael Koch, Carsten Heinz, Swaantje Grisanti
AIM: To evaluate whether optical coherence tomography angiography (OCTA) can detect altered vessel density (VD) at the optic nerve head (ONH) in glaucoma patients. Special attention is paid to the accuracy of the OCTA technique for distinguishing healthy from glaucomatous eyes. METHODS: A total of 171 eyes were examined by the OCTA system AngioVue™ (Optovue): 97 eyes diagnosed with glaucoma and 74 healthy control eyes. The papillary and peripapillary VD was measured...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29862177/diagnostic-ability-of-ganglion-cell-complex-thickness-to-detect-glaucoma-in-high-myopia-eyes-by-fourier-domain-optical-coherence-tomography
#6
Wei-Wei Wang, Huai-Zhou Wang, Jian-Rong Liu, Xi-Fang Zhang, Meng Li, Yan-Jiao Huo, Xin-Guang Yang
AIM: To evaluate the ability of macular ganglion cell complex (GCC) thickness using Fourier domain optical coherence tomography (FD-OCT) to detect glaucoma in highly myopic eyes. METHODS: Cross-sectional study. A total of 114 participants, consecutively were enrolled. Macular GCC thickness and peripapillary retinal nerve fiber layer (RNFL) thickness were obtained with RTVue FD-OCT. Receiver operating characteristics curves were constructed for each measurement parameter, and areas under the curves (AUCs) were compared...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29861577/application-of-optical-coherence-tomography-in-the-detection-and-classification-of-cognitive-decline
#7
REVIEW
Moon J Lee, Alison G Abraham, Bonnielin K Swenor, A Richey Sharrett, Pradeep Y Ramulu
Aim: This review aims to critically analyze the current literature on the relationship of optical coherence tomography (OCT) measures to cognition and dementia. Background: Optical coherence tomography, a noninvasive method of imaging neuroretinal layers, and OCT angiography, a highly precise method of examining retinal vasculature, have widely been used to aid in the diagnosis and monitoring of a variety of ocular diseases. There is now an increasing body of evidence relating the structural and microvascular changes of the retina to cognitive impairment...
January 2018: Journal of Current Glaucoma Practice
https://www.readbyqxmd.com/read/29860461/retinal-nerve-fiber-layer-features-identified-by-unsupervised-machine-learning-on-optical-coherence-tomography-scans-predict-glaucoma-progression
#8
Mark Christopher, Akram Belghith, Robert N Weinreb, Christopher Bowd, Michael H Goldbaum, Luke J Saunders, Felipe A Medeiros, Linda M Zangwill
Purpose: To apply computational techniques to wide-angle swept-source optical coherence tomography (SS-OCT) images to identify novel, glaucoma-related structural features and improve detection of glaucoma and prediction of future glaucomatous progression. Methods: Wide-angle SS-OCT, OCT circumpapillary retinal nerve fiber layer (cpRNFL) circle scans spectral-domain (SD)-OCT, standard automated perimetry (SAP), and frequency doubling technology (FDT) visual field tests were completed every 3 months for 2 years from a cohort of 28 healthy participants (56 eyes) and 93 glaucoma participants (179 eyes)...
June 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29858183/variability-of-vertical-cup-to-disc-ratio-measurement-and-the-effects-of-glaucoma-5-year-risk-estimation-in-untreated-ocular-hypertensive-eyes
#9
Poemen Pui Man Chan, Vivian S M Chiu, Mandy O I Wong
AIM: To compare the vertical cup to disc ratio (VCDR) measurements obtained with optical coherence tomography (OCT), Heidelberg retina tomography (HRT) and stereophotography of the optic nerve head (ONH) in patients with ocular hypertension (OHT), and their corresponding estimated 5-year risk for development of glaucoma. METHODS: ONH images of patients with OHT were taken by fundus camera (stereoscopic images), OCT and HRT. Optic disc stereophotographs were evaluated with a stereo-viewer by two glaucoma specialists (SP1 and SP2) and the VCDR was measured with the ImageJ software...
June 1, 2018: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/29850207/influence-of-disc-size-on-the-diagnostic-accuracy-of-cirrus-spectral-domain-optical-coherence-tomography-in-glaucoma
#10
Shino Sato, Kaori Ukegawa, Eri Nitta, Kazuyuki Hirooka
Purpose: To examine the influence of optic disc size on the diagnostic accuracy of optic nerve head (ONH) parameters determined by Cirrus spectral-domain optical coherence tomography (Cirrus HD-OCT). Methods: A total of 51 eyes of 51 normal participants and 71 eyes of 71 glaucoma patients were examined. ONH imaging was obtained by Cirrus HD-OCT. Sensitivity at a fixed 90% specificity along with the area under the receiver operating characteristic curve (AUC) for continuous parameters were analyzed...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29847642/factors-influencing-central-lamina-cribrosa-depth-a-multicenter-study
#11
Haomin Luo, Hongli Yang, Stuart K Gardiner, Christy Hardin, Glen P Sharpe, Joseph Caprioli, Shaban Demirel, Christopher A Girkin, Jeffrey M Liebmann, Christian Y Mardin, Harry A Quigley, Alexander F Scheuerle, Brad Fortune, Balwantray C Chauhan, Claude F Burgoyne
Purpose: To quantify the influence of ocular and demographic factors on central laminar depth (LD) in healthy participants. Methods: A total of 362 normal subjects underwent optical coherence tomography (OCT) enhanced depth imaging of the optic nerve head (ONH) with a 24 radial B-scan pattern aligned to the fovea-to-Bruch's membrane opening (BMO) axis. BMO, anterior lamina, anterior scleral canal opening (ASCO), Bruch's membrane (BM), and the peripapillary scleral surface were manually segmented...
May 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29789659/comparison-of-glaucoma-diagnostic-ability-between-wide-field-swept-source-oct-retinal-nerve-fiber-layer-maps-and-spectral-domain-oct
#12
Won June Lee, Sohee Oh, Young Kook Kim, Jin Wook Jeoung, Ki Ho Park
PURPOSE: To compare the diagnostic ability of wide-field swept-source optical coherence tomography (SS-OCT) retinal nerve fiber layer (RNFL) maps with spectral-domain OCT (SD-OCT) maps for detection of preperimetric (PPG) and early glaucoma (EG). PATIENTS AND METHODS: One hundred and forty-six eyes, including 37 healthy eyes, 38 eyes with PPG, and 71 eyes with EG, were analyzed. The patients underwent both SD-OCT (Cirrus HD-OCT; Carl Zeiss Meditec, Dublin, CA, USA) and wide-field SS-OCT scanning (DRI-OCT-1 Atlantis; Topcon, Tokyo, Japan)...
May 23, 2018: Eye
https://www.readbyqxmd.com/read/29787603/association-of-ocular-cardiovascular-morphometric-and-lifestyle-parameters-with-retinal-nerve-fibre-layer-thickness
#13
Julia Lamparter, Irene Schmidtmann, Alexander K Schuster, Angeliki Siouli, Joanna Wasielica-Poslednik, Alireza Mirshahi, René Höhn, Josef Unterrainer, Philipp S Wild, Harald Binder, Karl Lackner, Manfred E Beutel, Thomas Münzel, Norbert Pfeiffer, Esther M Hoffmann
BACKGROUND: Glaucoma is a neurodegenerative disease, leading to thinning of the retinal nerve fibre layer (RNFL). The exact influence of ocular, cardiovascular, morphometric, lifestyle and cognitive factors on RNFL thickness (RNFLT) is unknown and was analysed in a subgroup of the Gutenberg Health Study (GHS). METHODS: Global peripapillary RNFLT was measured in 3224 eyes of 1973 subjects (49% female) using spectral-domain optical coherence tomography (SD-OCT). The association of age, sex, ocular, cardiovascular, morphometric, lifestyle and cognitive factors on RNFLT was analysed using Pearson correlation coefficient and fitting a linear mixed model...
2018: PloS One
https://www.readbyqxmd.com/read/29762268/influence-of-removing-the-large-retinal-vessels-related-effect-on-peripapillary-vessel-density-progression-analysis-in-glaucoma
#14
Gábor Holló
PURPOSE: To investigate the usefulness of removing the large vessel-related information from peripapillary optical coherence tomography (OCT) angiography progression analysis. Peripapillary vessel density (VD) image series which had shown no progression with an earlier software version that did not separate capillary and large vessel-related effects were reevaluated for selective peripapillary capillary VD progression. METHODS: Prospective retinal nerve fiber layer thickness (RNFLT) and peripapillary VD measurements were made using the Angiovue/RTvue-XR OCT on one eye of 9 normal, 20 under treatment ocular hypertensive (OHT) and 24 under treatment open-angle glaucoma patients at 6-month intervals for 2 years (5 visits)...
May 12, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29757019/optical-coherence-tomography-angiography-in-glaucoma-care
#15
Sunee Chansangpetch, Shan C Lin
Rapid improvements in optical coherence tomography (OCT) technology have allowed for enhancement of both image resolution and scanning speed, and the development of vascular assessment modality. Optical coherence tomography angiography (OCTA) is the non-invasive in vivo imaging of the vasculature located within the retina and optic nerve head area. The principle of OCTA is to use the variations in OCT signals caused by moving particles as the contrast mechanism for imaging of flow. Several algorithms which aim to maximize the contrast signal and minimize the noise have been developed including the phase-based techniques, intensity-based techniques (e...
May 14, 2018: Current Eye Research
https://www.readbyqxmd.com/read/29750949/automated-beta-zone-parapapillary-area-measurement-to-differentiate-between-healthy-and-glaucoma-eyes
#16
Patricia Isabel C Manalastas, Akram Belghith, Robert N Weinreb, Jost B Jonas, Min Hee Suh, Adeleh Yarmohammadi, Felipe A Medeiros, Christopher A Girkin, Jeffrey M Liebmann, Linda M Zangwill
PURPOSE: To evaluate whether automated assessment of beta-zone parapapillary atrophy (ßPPA) area can differentiate between glaucomatous and healthy eyes of varying axial lengths (AL). DESIGN: Cross-sectional study. METHODS: ßPPA was automatically identified in glaucoma and healthy eyes with enhanced depth imaging optical coherence tomography (OCT) optic nerve head (ONH) radial B-scans. Associations with AL and the presence of glaucoma were assessed...
May 8, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29750715/visual-field-tests-for-glaucoma-patients-with-initial-macular-damage-comparison-between-frequency-doubling-technology-and-standard-automated-perimetry-using-24-2-or-10-2-visual-fields
#17
Hae-Young Lopilly Park, Jiyoung Lee, Chan Kee Park
PURPOSE: To compare standard automated perimetry (SAP) and frequency-doubling technology (FDT) perimetry for detecting macular damage in glaucoma. METHODS: One-hundred-twelve glaucomatous eyes with localized retinal nerve fiber layer (RNFL) defects on red-free photographs and corresponding macular ganglion cell/inner plexiform layer (mGC/IPL) thinning on the deviation map of macular optical coherence tomography (OCT), and thirty-five healthy eyes were enrolled in the study...
May 10, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29736326/evaluation-of-a-qualitative-approach-for-detecting-glaucomatous-progression-using-wide-field-optical-coherence-tomography-scans
#18
Zhichao Wu, Denis S D Weng, Rashmi Rajshekhar, Abinaya Thenappan, Robert Ritch, Donald C Hood
Purpose: To determine the effectiveness of detecting glaucomatous progression by a qualitative evaluation of wide-field (12 × 9 mm) scans on optical coherence tomography imaging. This method was compared to a conventional quantitative analysis of the global circumpapillary retinal nerve fiber layer (cpRNFL) thickness. Methods: A total of 409 eyes with a clinical diagnosis of glaucoma or suspected glaucoma for which two wide-field scans were obtained at least 1 year apart ( n = 125) and within one session ( n = 284) were included to determine the sensitivity of detecting progression at 95% specificity...
May 2018: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/29706620/the-effect-of-trabeculectomy-surgery-on-the-central-visual-field-in-patients-with-glaucoma-using-microperimetry-and-optical-coherence-tomography
#19
Gokulan Ratnarajan, Jasleen K Jolly, Imran H Yusuf, John F Salmon
PURPOSE: To determine the functional and structural effects of trabeculectomy surgery on patients with advanced glaucoma and central visual field defects in the early post-operative period. METHODS: Thirty consecutive adult subjects with advanced glaucoma requiring trabeculectomy surgery and an established visual field defect within 10° of fixation underwent microperimetry (MAIA MP-1, CenterVue, Padova, Italy) and optic disc optical coherence tomography (OCT) imaging (Spectralis, Heidelberg Engineering, Germany) pre-operatively, and 1 month and 3 months following trabeculectomy surgery...
April 30, 2018: Eye
https://www.readbyqxmd.com/read/29672563/analysis-of-inner-and-outer-retinal-layers-using-spectral-domain-optical-coherence-tomography-automated-segmentation-software-in-ocular-hypertensive-and-glaucoma-patients
#20
Pilar Cifuentes-Canorea, Jorge Ruiz-Medrano, Rosa Gutierrez-Bonet, Pablo Peña-Garcia, Federico Saenz-Frances, Julian Garcia-Feijoo, Jose Maria Martinez-de-la-Casa
OBJECTIVE: To analyse the morphological features and diagnostic ability of eight macular retinal layers using a new segmentation software Heidelberg's Spectralis Optical Coherence Tomography (SD-OCT) in healthy, ocular hypertensive and primary open angle glaucoma patients. METHODS: Single-center, cross-sectional, non-interventional study. 193 eyes from 193 consecutive patients (56 controls, 63 ocular hypertensives, 32 early primary open glaucoma patients and 42 moderate-advanced primary open glaucoma patients)...
2018: PloS One
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