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https://www.readbyqxmd.com/read/29352993/comparison-of-chorioretinal-layers-in-rhesus-macaques-using-spectral-domain-optical-coherence-tomography-and-high-resolution-histological-sections
#1
Glenn Yiu, Zhe Wang, Christian Munevar, Eric Tieu, Bradley Shibata, Brittany Wong, David Cunefare, Sina Farsiu, Jeffrey Roberts, Sara Thomasy
Nonhuman primates are important preclinical models of retinal diseases because they uniquely possess a macula similar to humans. Ocular imaging technologies such as spectral-domain optical coherence tomography (SD-OCT) allow noninvasive, in vivo measurements of chorioretinal layers with near-histological resolution. However, the boundaries are based on differences in reflectivity, and detailed correlations with histological tissue layers have not been explored in rhesus macaques, which are widely used for biomedical research...
January 15, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29349656/correlations-among-multifocal-electroretinography-and-optical-coherence-tomography-findings-in-patients-with-parkinson-s-disease
#2
Metin Unlu, Duygu Gulmez Sevim, Murat Gultekin, Cagatay Karaca
To assess the correlation between functional and anatomical evaluations with multifocal electroretinography (mfERG) and spectral-domain optical coherence tomography (SD-OCT) in patients with Parkinson's disease (PD). This cross-sectional study involved 116 eyes of 58 patients with PD and 30 age- and sex-matched control subjects. All study participants underwent a comprehensive neuro-ophthalmic examination, retinal single-layer thicknesses and volumes, and peripapillary retinal nerve fiber layer (pRNFL) measurements with SD-OCT, and the patients' mfERG recordings were evaluated...
January 18, 2018: Neurological Sciences
https://www.readbyqxmd.com/read/29346239/factors-associated-with-development-of-dissociated-optic-nerve-fiber-layer-appearance-in-the-pioneer-intraoperative-optical-coherence-tomography-study
#3
Anne P Runkle, Sunil K Srivastava, Alex Yuan, Peter K Kaiser, Rishi P Singh, Jamie L Reese, Justis P Ehlers
PURPOSE: To assess the relationship of dissociated optic nerve fiber layer (DONFL) and intraoperative membrane-peeling dynamics as visualized using intraoperative optical coherence tomography (OCT), and to evaluate the functional implications of DONFL. METHODS: This was a post hoc analysis of eyes undergoing membrane peeling for vitreomacular interface disorders in the prospective PIONEER intraoperative OCT study. Retinal layer measurements in preincision and postpeel intraoperative OCT images were obtained...
January 16, 2018: Retina
https://www.readbyqxmd.com/read/29343878/cxcl14-like-immunoreactivity-exists-in-somatostatin-containing-endocrine-cells-and-in-the-lamina-propria-and-submucosal-somatostatinergic-nervous-system-of-mouse-alimentary-tract
#4
Hirohumi Suzuki, Kentaro Yamada, Yasuhiro Matsuda, Minoru Onozuka, Toshiharu Yamamoto
In the present study, we investigated the distribution of CXCL14 immunoreactive endocrine cells and neurons in mouse alimentary tract by immunohistochemistry. CXCL14 immunoreactive endocrine cells were found as closed-type cells in the stomach and open-type cells in the small intestine. The immunostaining of these endocrine cells corresponded with that of the somatostatin-containing endocrine cells. Only a few CXCL14 immunoreactive endocrine cells were seen in the large intestine. CXCL14 immunoreactive fibers were observed in the muscular layer from the stomach to the rectum with most abundance in the rectum...
December 26, 2017: Acta Histochemica et Cytochemica
https://www.readbyqxmd.com/read/29339644/changes-in-central-macular-thickness-and-retinal-nerve-fiber-layer-thickness-in-eyes-with-vogt-koyanagi-harada-disease-a-2-year-follow-up-study
#5
Yong-Seop Han, Kyung-Sup Shin, Woo-Hyuk Lee, Jung-Yeul Kim
PURPOSE: To investigate the central macular thickness (CMT) and retinal nerve fiber layer (RNFL) thickness in eyes with Vogt-Koyanagi-Harada (VKH) disease associated with optic disc swelling and serous retinal detachment through a 24-month follow-up period. METHODS: We prospectively investigated 28 eyes of 14 treatment-naïve patients with acute VKH disease associated with optic disc swelling and serous retinal detachment and 30 eyes of 15 normal individuals to compare changes in the CMT and average RNFL thickness...
January 16, 2018: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/29335420/lamina-cribrosa-morphology-predicts-progressive-retinal-nerve-fiber-layer-loss-in-eyes-with-suspected-glaucoma
#6
Jeong-Ah Kim, Tae-Woo Kim, Robert N Weinreb, Eun Ji Lee, Michaël J A Girard, Jean Martial Mari
Although early diagnosis and treatment reduce the risk of blindness from glaucoma, the decision on whether or not to begin treatment in patients with suspected glaucoma is often a dilemma because the majority of patients never develop definite glaucoma. A growing body of evidences suggests that posterior bowing of the lamina cribrosa (LC) is the earliest structural change preceding the retinal nerve fiber layer (RNFL) loss in glaucomatous optic neuropathy. Based on this notion, we conducted a prospective study enrolling 87 eyes suspected of having glaucoma to investigate whether the future rate of RNFL loss is associated with the baseline LC curve evaluated by measuring the LC curve index (LCCI) using enhanced depth imaging optical coherence tomography...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29334923/relationship-between-corneal-biomechanical-properties-and-structural-biomarkers-in-patients-with-normal-tension-glaucoma-a-retrospective-study
#7
Keunheung Park, Jonghoon Shin, Jiwoong Lee
BACKGROUND: We evaluated the relationships between corneal biomechanical properties and structural parameters in patients with newly diagnosed, untreated normal-tension glaucoma (NTG). METHODS: All subjects were evaluated using an Ocular Response Analyzer (ORA) measuring corneal hysteresis (CH) and the corneal resistance factor (CRF). Central corneal thickness (CCT), Goldmann applanation tonometric (GAT) data, axial length, and the spherical equivalent (SE), were also measured...
January 15, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29332249/correlation-of-flow-density-as-measured-using-optical-coherence-tomography-angiography-with-structural-and-functional-parameters-in-glaucoma-patients
#8
Maged Alnawaiseh, Larissa Lahme, Viktoria Müller, André Rosentreter, Nicole Eter
PURPOSE: To evaluate the correlation between flow density, as measured by optical coherence tomography angiography (OCTA), and structural and functional parameters in patients with open-angle glaucoma. METHODS: Thirty-four eyes of 34 patients with open-angle glaucoma and 35 eyes of 35 healthy subjects were prospectively included in this study. OCTA was performed using RTVue XR Avanti with AngioVue. The macula was imaged with a 3 × 3 mm scan and the optic nerve head (ONH) with a 4...
January 13, 2018: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29329562/granular-cell-tumors-of-the-tongue-fibroma-or-schwannoma
#9
Atsushi Musha, Masaru Ogawa, Satoshi Yokoo
BACKGROUND: Granular cell tumors are benign lesions that typically occur in the oral cavity, but can also be found in other sites. However, the characteristics of these tumors are unclear. Thus, the present study aimed to investigate the immunohistological characteristics of these tumors of the tongue. METHODS: Seven patients were treated for granular cell tumors of the tongue at our institution during 2003-2017. Paraffin-embedded specimens were available for all cases; thus, retrospective immunohistochemical analyses were performed...
January 3, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/29329141/precision-of-optic-nerve-head-and-retinal-nerve-fiber-layer-parameter-measurements-by-spectral-domain-optical-coherence-tomography
#10
Laura M Schrems-Hoesl, Wolfgang A Schrems, Robert Laemmer, Friedrich E Kruse, Christian Y Mardin
PURPOSE: The aim of this study was to assess the repeatability and reproducibility (R&R) of Bruch's Membrane Opening - based on Minimum Rim Width (BMO-MRW), Minimum Rim Area (BMO-MRA) and peripapillary retinal nerve fiber layer thickness (RNFLT) with the Spectralis OCT (Heidelberg Engineering) for normal and glaucoma subjects. Precise measurement of these parameters can support detection of structural glaucomatous damage and progression. METHODS: This cross-sectional study included 16 healthy controls and 16 patients with glaucoma...
January 11, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29329139/diagnostic-ability-and-structure-function-relationship-of-peripapillary-optical-microangiography-measurements-in-glaucoma
#11
Harsha L Rao, Srilakshmi Dasari, Mohammed Riyazuddin, Narendra K Puttaiah, Zia S Pradhan, Robert N Weinreb, Kaweh Mansouri, Carroll A B Webers
PURPOSE: To evaluate the diagnostic abilities of peripapillary optical microangiography (OMAG) measurements in eyes with primary open angle glaucoma (POAG) and to evaluate the relationship of these measurements with retinal nerve fiber layer (RNFL) thickness and visual sensitivities in different peripapillary sectors. METHODS: In a cross-sectional study, 97 eyes of 57 control subjects and 101 eyes of 66 POAG patients underwent OMAG and RNFL imaging with optical coherence tomography...
January 11, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29329137/macular-and-multifocal-perg-and-fd-oct-in-pre-perimetric-and-hemifield-loss-glaucoma
#12
André Carvalho Kreuz, Carlos Gustavo de Moraes, Marcelo Hatanaka, Maria Kiyoko Oyamada, Mario L R Monteiro
PURPOSE: To evaluate the ability of macular and multifocal (mf) pattern electroretinogram (PERG) to differentiate pre-perimetric glaucoma (PG) and glaucoma with hemifield loss (GHL) from controls, to compare the discrimination ability of PERG and fourier-domain optical coherence tomography (fdOCT), and to assess the relationship between measurements. METHODS: Standard automated perimetry, [1] steady-state and transient PERG and mfPERG measurements were obtained from PG (n=14, 24 eyes), GHL (n=5, 7 eyes) and controls (n=19, 22 eyes)...
January 11, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29327060/optical-coherence-tomography-analysis-of-the-optic-nerve-head-and-surrounding-structures-in-long-duration-international-space-station-astronauts
#13
Nimesh Patel, Anastas Pass, Sara Mason, Charles R Gibson, Christian Otto
Importance: After long-duration spaceflight, morphological changes in the optic nerve head (ONH) and surrounding tissues have been reported. Objective: To develop methods to quantify ONH and surrounding tissue changes using preflight and postflight optical coherence tomographic scans of the ONH region. Design, Setting, and Participants: Two separate analyses were done on retrospective data, with the first comparing a preflight group with a control group, followed by preflight to postflight analysis...
January 11, 2018: JAMA Ophthalmology
https://www.readbyqxmd.com/read/29320503/pattern-of-peripapillary-capillary-density-loss-in-ischemic-optic-neuropathy-compared-to-that-in-primary-open-angle-glaucoma
#14
Masoud Aghsaei Fard, Yanin Suwan, Sasan Moghimi, Lawrence S Geyman, Toco Y Chui, Richard B Rosen, Robert Ritch
PURPOSE: Both non-arteritic anterior ischemic optic neuropathy (NAION) and primary open-angle glaucoma (POAG) damage retinal ganglion cell axons, which are perfused by the radial peripapillary capillaries. To evaluate the pattern of ischemia, we compared peripapillary capillary density (PCD) in NAION eyes to POAG eyes matched for visual field mean deviation and retinal nerve fiber layer thickness. METHODS: 31 chronic NAION (>6 months after the acute event) and unaffected fellow eyes (31 subjects), 42 moderate and severe POAG eyes (27 subjects), and 77 control eyes (46 healthy subjects) were imaged with a commercial optical coherence tomography angiography system (AngioVue, Avanti RTVue-XR, Optovue, CA) at two academic institutions...
2018: PloS One
https://www.readbyqxmd.com/read/29313052/a-deep-learning-approach-to-digitally-stain-optical-coherence-tomography-images-of-the-optic-nerve-head
#15
Sripad Krishna Devalla, Khai Sing Chin, Jean-Martial Mari, Tin A Tun, Nicholas G Strouthidis, Tin Aung, Alexandre H Thiéry, Michaël J A Girard
Purpose: To develop a deep learning approach to digitally stain optical coherence tomography (OCT) images of the optic nerve head (ONH). Methods: A horizontal B-scan was acquired through the center of the ONH using OCT (Spectralis) for one eye of each of 100 subjects (40 healthy and 60 glaucoma). All images were enhanced using adaptive compensation. A custom deep learning network was then designed and trained with the compensated images to digitally stain (i.e., highlight) six tissue layers of the ONH...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29311586/the-corneal-subbasal-nerve-plexus-and-thickness-of-the-retinal-layers-in-pediatric-type-1-diabetes-and-matched-controls
#16
Aline Götze, Sophie von Keyserlingk, Sabine Peschel, Ulrike Jacoby, Corinna Schreiver, Bernd Köhler, Stephan Allgeier, Karsten Winter, Martin Röhlig, Anselm Jünemann, Rainer Guthoff, Oliver Stachs, Dagmar-C Fischer
Optical coherence tomography (OCT) of the retina and corneal confocal laser scanning microscopy (CLSM) of the subbasal nerve plexus (SBP) are noninvasive techniques for quantification of the ocular neurodegenerative changes in individuals with type 1 diabetes mellitus (T1DM). In adult T1DM patients these changes are hardly related to T1DM only. Instead, ageing and/or lifestyle associated comorbidities have to be considered as putative confounding variables. Therefore, we investigated pediatric T1DM patients (n = 28; 14...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29309745/alterations-of-ocular-hemodynamics-impair-ophthalmic-vascular-and-neuroretinal-function
#17
Shu-Huai Tsai, Wankun Xie, Min Zhao, Robert H Rosa, Travis W Hein, Lih Kuo
Hypertension is associated with numerous diseases, but its direct impact on the ocular circulation and neuroretinal function remains unclear. Herein, mouse eyes were challenged with different levels of hemodynamic insult via transverse aortic coarctation, which increased blood pressure and flow velocity by 50% and 40%, respectively, in the right common carotid artery, and reduced those parameters by 30% and 40%, respectively, in the left common carotid artery. Blood velocity in the right central retinal artery gradually increased up to 40% at four weeks of transverse aortic coarctation, and the velocity in the left central retinal artery gradually decreased by 20%...
January 5, 2018: American Journal of Pathology
https://www.readbyqxmd.com/read/29304270/a-new-oct-finding-in-purtscher-like-retinopathy
#18
Sevil Ari Yaylali, Nedim Bromand, Guler Kilic
The authors report a new spectral-domain optical coherence tomography (SD-OCT) appearance observed in two patients with Purtscher-like retinopathy. In this prospective case series of three eyes of two patients with Purtscher-like retinopathy, the patients were assessed with biomicroscopy, fluorescein angiography (FA), and SD-OCT. The last examinations of the patients were performed at 3 months and 12 months, respectively. Both patients presented with decreased visual acuity. Fundus examination revealed a whitish-appearing parafoveal retina and scattered cotton-wool spots in the posterior retina...
January 1, 2018: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29304265/segmental-analysis-of-macular-layers-in-patients-with-rhegmatogenous-retinal-detachment-treated-with-perfluoropropane-or-silicon-oil
#19
Yasin Sakir Goker, Kemal Yuksel, Miray Faiz Turan, Kenan Sonmez, Kemal Tekin, Pelin Yilmazbas
BACKGROUND AND OBJECTIVE: To determine possible changes in thickness profiles of retinal layers in patients with rhegmatogenous retinal detachment (RRD) treated with perfluoropropane (C3F8) or silicon oil (SiO). PATIENTS AND METHODS: Seventy-two eyes of 36 patients were enrolled in this retrospective comparative study. Patients were divided into two groups according to intraocular tamponade: C3F8 or SiO. All study eyes were compared with fellow eyes via spectral-domain optical coherence tomography segment analysis at 6 months postoperatively...
January 1, 2018: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29303881/association-between-optic-disc-hemorrhage-and-renal-function-in-south-korea
#20
Jae Yeun Lee, Joon Mo Kim, SeongHee Shim, Jin Young Lee, Chungkwon Yoo, Ji Yoon Song, Yu Sam Won, Young Youl Hyun, Ki Ho Park
PURPOSE: To investigate the relationship between renal function and disc hemorrhage (DH). METHODS: This retrospective cross-sectional survey was conducted at Kangbuk Samsung Hospital Health Screening Center between August 2012 and July 2013, and a total of 168,044 participants at least 20 years of age who voluntarily visited the health screening center for systemic and ophthalmologic examinations, including fundus photography, were enrolled. All subjects underwent a physical examination and provided samples for laboratory analysis...
January 4, 2018: Journal of Glaucoma
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