keyword
MENU ▼
Read by QxMD icon Read
search

OCT Nerve head

keyword
https://www.readbyqxmd.com/read/28641680/ophthalmological-evaluation-of-integrated-resistance-and-aerobic-training-during-70-day-bed-rest
#1
Giovanni Taibbi, Ronita L Cromwell, Susana B Zanello, Patrice O Yarbough, Robert J Ploutz-Snyder, Bernard F Godley, Gianmarco Vizzeri
INTRODUCTION: We evaluated ophthalmic changes in healthy individuals who underwent integrated resistance and aerobic training (iRAT) during 70-d 6° head-down tilt (HDT) bed rest (BR). METHODS: Participants were selected using NASA standard screening procedures. Standardized NASA BR conditions were implemented. Subjects were randomly assigned to the iRAT protocol or no exercise during HDTBR. Weekly ophthalmic examinations were performed in the sitting (pre/post-BR only) and HDT (BR only) positions...
July 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28637781/detecting-optic-nerve-head-swelling-on-ultrasound-and-optical-coherence-tomography-in-children-and-young-people-an-observational-study
#2
Annegret Hella Dahlmann-Noor, Gillian W Adams, Moritz Claudius Daniel, Alison Davis, Joanne Hancox, Melanie Hingorani, Patricia Ibanez, Becky McPhee, Himanshu Patel, Marie Restori, Clare Roberts, Maria Theodorou, James Acheson
BACKGROUND: Following high-profile cases, referrals for evaluation of 'suspicious optic discs' to eye clinics in the UK have sharply increased, asking ophthalmologists to reliably distinguish between true and pseudopapilloedema. Optic nerve sheath dilatation (ONSD) on ocular ultrasound (US) is considered a reliable sign of true papilloedema, but this test is not widely available. Recently, anterior bowing of Bruch's membrane (BM) and increased retinal nerve fibre layer thickness on optical coherence tomography (OCT) have emerged as indicators of intracranial hypertension, and OCT is widely available...
June 21, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28631244/optical-coherence-tomography-angiography-in-pre-perimetric-open-angle-glaucoma
#3
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/28622313/optical-coherence-tomography-analysis-of-evolution-of-bruch-s-membrane-features-in-angioid-streaks
#4
A Marchese, M Parravano, A Rabiolo, A Carnevali, E Corbelli, M V Cicinelli, M Battaglia Parodi, L Querques, F Bandello, G Querques
PurposeTo describe optical coherence tomography (OCT) features in the Bruch's membrane (BM) of eyes with angioid streaks (AS) and evaluate their evolution over the follow-up.Patients and methodsPatients with AS presenting between March 2016 and September 2016 at two tertiary referral centers were consecutively recruited in this study. Eligibility criteria included prior spectral domain (SD)-OCT images, taken at least 3 months before at the same referral center, with automated eye tracking and image alignment modules...
June 16, 2017: Eye
https://www.readbyqxmd.com/read/28611153/effects-of-short-term-mild-hypercapnia-during-head-down-tilt-on-intracranial-pressure-and-ocular-structures-in-healthy-human-subjects
#5
Steven S Laurie, Gianmarco Vizzeri, Giovanni Taibbi, Connor R Ferguson, Xiao Hu, Stuart M C Lee, Robert Ploutz-Snyder, Scott M Smith, Sara R Zwart, Michael B Stenger
Many astronauts experience ocular structural and functional changes during long-duration spaceflight, including choroidal folds, optic disc edema, globe flattening, optic nerve sheath diameter (ONSD) distension, retinal nerve fiber layer thickening, and decreased visual acuity. The leading hypothesis suggests that weightlessness-induced cephalad fluid shifts increase intracranial pressure (ICP), which contributes to the ocular structural changes, but elevated ambient CO2 levels on the International Space Station may also be a factor...
June 2017: Physiological Reports
https://www.readbyqxmd.com/read/28584935/evaluation-of-optic-nerve-head-parameters-and-retinal-nerve-fiber-layer-thickness-in-axial-myopia-using-sd-oct
#6
Heba Radi AttaAllah, Ismail Ahmed Nagib Omar, Ahmed Shawkat Abdelhalim
INTRODUCTION: The purpose of this research was to study the effect of increased axial myopia, in non-glaucomatous eyes, and its correlation with ONH parameters, and RNFL thickness, using Cirrus HD 4000 SD-OCT. METHODS: The myopia group included 86 eyes of 86 patients, while the control group involved 92 eyes of 92 patients, attending the Ophthalmology Outpatient Clinic in Minia University Hospital, between November 2013 and March 2015. ONH parameters and peripapillary RNFL thickness measurement were evaluated by using SD-OCT, selecting the standard optic disc cube 200 × 200...
June 5, 2017: Ophthalmology and Therapy
https://www.readbyqxmd.com/read/28584914/optical-coherence-tomography-for-the-diagnosis-and-monitoring-of-idiopathic-intracranial-hypertension
#7
Philipp Albrecht, Christine Blasberg, Marius Ringelstein, Ann-Kristin Müller, David Finis, Rainer Guthoff, Ella-Maria Kadas, Wolf Lagreze, Orhan Aktas, Hans-Peter Hartung, Friedemann Paul, Alexander U Brandt, Axel Methner
The objectives of the study were to investigate the value of optical coherence tomography in detecting papilledema in patients with idiopathic intracranial hypertension (IIH), a disease which is difficult to monitor and which can lead to permanent visual deficits; to analyze retinal changes over time. In this non-interventional case-control study, spectral-domain optical coherence tomography (SD-OCT) was used to analyze the retinal and optic nerve head (ONH) morphology of 21 patients with IIH and 27 age- and sex-matched healthy controls over time...
June 5, 2017: Journal of Neurology
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
#8
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)...
May 26, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28557535/peripapillary-atrophy-in-high-myopia
#9
Weifeng Liu, Liping Gong, Yingjie Li, Xuan Zhu, Jay M Stewart, Changyun Wang
PURPOSE: To evaluate peripapillary atrophy (PPA) in high myopia (HM) as a function of extent of myopia, axial length (AL), and age. METHODS: Medical records from patients (n = 88) seen in the Ophthalmology Department of the Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China, and diagnosed with high myopia (HM)-defined as spherical equivalent (SE) of >6.00 diopters (D) of myopia in either eye-were included in this study. Eyes were classified according to SE and age...
May 30, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28538978/the-characteristics-of-deep-optic-nerve-head-morphology-in-myopic-normal-tension-glaucoma
#10
Jong Chul Han, Eun Jung Lee, Si Bum Kim, Changwon Kee
Purpose: To investigate the relationship between axial length (AL) and deep optic nerve head (ONH) structure and to evaluate the characteristics of deep ONH structures in myopic normal tension glaucoma (NTG). Methods: The following parameters were assessed using spectral-domain optical coherence tomography (SD-OCT): externally oblique border tissue (EOBT) length, ONH tilt angle, optic canal (OC) obliqueness, and β-zone peripapillary atrophy (PPA). In addition, the angular location of the maximal value of each parameter and retinal nerve fiber layer (RNFL) defect were measured using infrared and red-free photos...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28538035/structure-function-analysis-of-nonarteritic-anterior-ischemic-optic-neuropathy-and-age-related-differences-in-outcome
#11
Ming-Hui Sun, Yaping Joyce Liao
BACKGROUND: The optic nerve head is vulnerable to ischemia leading to anterior ischemic optic neuropathy (AION), the most common acute optic neuropathy in those older than 50 years of age. METHODS: We performed a cross-sectional study of 55 nonarteritic anterior ischemic optic neuropathy (NAION) eyes in 34 patients to assess clinical outcome and perform structure-function correlations. RESULTS: The peak age of NAION onset was between 50 and 55 years...
May 18, 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28492874/peripapillary-retinal-pigment-epithelium-layer-shape-changes-from-acetazolamide-treatment-in-the-idiopathic-intracranial-hypertension-treatment-trial
#12
Jui-Kai Wang, Randy H Kardon, Johannes Ledolter, Patrick A Sibony, Mark J Kupersmith, Mona K Garvin
Purpose: Recent studies indicate that the amount of deformation of the peripapillary retinal pigment epithelium and Bruch's membrane (pRPE/BM) toward or away from the vitreous may reflect acute changes in cerebrospinal fluid pressure. The study purpose is to determine if changes in optic-nerve-head (ONH) shape reflect a treatment effect (acetazolamide/placebo + weight management) using the optical coherence tomography (OCT) substudy of the Idiopathic Intracranial Hypertension Treatment Trial (IIHTT) at baseline, 3, and 6 months...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28490427/effect-of-acute-intraocular-pressure-elevation-on-the-minimum-rim-width-in-normal-ocular-hypertensive-and-glaucoma-eyes
#13
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
https://www.readbyqxmd.com/read/28486274/a-novel-method-for-assessing-lamina-cribrosa-structure-ex-vivo-using-anterior-segment-enhanced-depth-imaging-optical-coherence-tomography
#14
Jason L Chien, Mark P Ghassibi, Pooja Mahadeshwar, Pengcheng Li, Jeffrey M Liebmann, Robert Ritch, Tatyana Milman, Sung Chul Park
PURPOSE: The purpose of this study is to investigate the use of anterior segment enhanced depth imaging (EDI) optical coherence tomography (OCT) for ex vivo lamina cribrosa (LC) imaging. MATERIALS AND METHODS: After removing anterior segment and vitreous, the optic nerve head (ONH) tissue of porcine eyes was placed on a customized eye holder for imaging. Serial EDI OCT B-scans (interval, ∼35 μm) of the ONH were obtained using anterior segment module of spectral-domain OCT...
May 8, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28447287/topography-and-correlation-of-radial-peripapillary-capillary-density-network-with-retinal-nerve-fibre-layer-thickness
#15
Tarannum Mansoori, Jayanthi Sivaswamy, Jahnavi Sai Gamalapati, Nagalla Balakrishna
PURPOSE: To analyse the expansion of radial peripapillary capillary (RPC) network with optical coherence tomography angiography (OCT-A) in normal human eyes and correlate RPC density with retinal nerve fibre layer thickness (RNFLT) at various distances from the optic nerve head (ONH) edge. METHODS: Fifty eyes of 50 healthy subjects underwent imaging with RTVue XR-100 Avanti OCT. OCT-A scans of Angio disc (6 × 6 mm) and Angio retina (8 × 8 mm) were combined to create a wide-field montage image of the RPC network...
April 26, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28405489/three-dimensional-optical-coherence-tomography-imaging-and-treatment-of-glaucomatous-optic-nerve-head-defects-associated-with-schisis-like-maculopathy
#16
Zafer Öztaş, Jale Menteş, Halil Ateş, Serhad Nalçacı
We present the three-dimensional (3D) spectral-domain optical coherence tomography (SD-OCT) findings of schisis-like maculopathy associated with structural changes of the optic nerve (ON) head as well as the treatment outcomes of a case of advanced glaucoma. In addition to ophthalmological examination, B-scan and 3D-SD-OCT images of the ON head, peripapillary retina, and the macula were obtained. The B-scan images only detected typical retinoschisis findings. However, the 3D-SD-OCT images of the ON head revealed defects of various sizes, shapes, and depths at the outer wall of the prelaminar and laminar regions of the ON canal...
April 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28394809/structure-function-relationship-between-the-bruch-membrane-opening-based-minimum-rim-width-and-visual-field-defects-in-advanced-glaucoma
#17
Serhat Imamoglu, Nimet Burcu Celik, Mehmet S Sevim, Gokhan Pekel, Nimet Yesim Ercalik, Esra Turkseven Kumral, Handan Bardak
PURPOSE: To investigate the relationship between the Bruch membrane opening-minimum rim width (BMO-MRW) (global and temporal) parameters with spectral-domain optical coherence tomography (SD-OCT) and visual field (VF) sensitivity on the 10-2 test in patients with advanced glaucoma. MATERIALS AND METHODS: This cross-sectional, observational study included a total of 33 eyes of 29 patients. To evaluate VF sensitivity, automated white-on-white perimetry was performed using a Humphrey field analyzer...
June 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28388263/reversal-of-cystoid-macular-edema-in-gyrate-atrophy-patients
#18
Dan Heller, Chen Weiner, Iris Nasie, Yair Anikster, Yuval Landau, Tal Koren, Russell Pokroy, Adi Abulafia, Eran Pras
PURPOSE: This study reports the presentation of two families with gyrate atrophy (GA). The aim of this study was to characterize the potential effect of therapeutic regimens on macular edema. METHODS: Two unrelated patients with GA were studied for the potential effect of low protein diet (≤ 0.8 g/kg/d), and oral administration of pyridoxine (500 mg/day), on serum ornithine levels, best corrected visual acuity (BCVA), slit-lamp, OCT, and auto-fluorescence findings...
April 7, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/28387764/crowded-optic-nerve-head-evaluation-with-optical-coherence-tomography-in-anterior-ischemic-optic-neuropathy
#19
S Moghimi, M Afzali, M Akbari, K B Ebrahimi, A Khodabande, A R Yazdani-Abyaneh, S N H Ghafouri, P Coh, S Okhravi, M A Fard
PurposeTo characterize the optic nerve head (ONH) structure in patients with non-arteritic anterior ischemic optic neuropathy (NAION) compared to healthy control subjects using spectral domain optical coherence tomography (SD-OCT) via the enhanced depth imaging method.MethodsIn this prospective, cross-sectional, comparative study, we assessed 66 eyes of 33 patients with unilateral NAION and 31 eyes of 31 healthy normal subjects in an academic institution. The peripapillary nerve fiber layer thickness, disc area, and quantitative parameters of the ONH structures, including the Bruch's membrane opening (BMO) area, anterior laminar depth, and prelaminar thickness and depth were compared between the three groups...
April 7, 2017: Eye
https://www.readbyqxmd.com/read/28363483/restoration-of-reaching-and-grasping-movements-through-brain-controlled-muscle-stimulation-in-a-person-with-tetraplegia-a-proof-of-concept-demonstration
#20
A Bolu Ajiboye, Francis R Willett, Daniel R Young, William D Memberg, Brian A Murphy, Jonathan P Miller, Benjamin L Walter, Jennifer A Sweet, Harry A Hoyen, Michael W Keith, P Hunter Peckham, John D Simeral, John P Donoghue, Leigh R Hochberg, Robert F Kirsch
BACKGROUND: People with chronic tetraplegia, due to high-cervical spinal cord injury, can regain limb movements through coordinated electrical stimulation of peripheral muscles and nerves, known as functional electrical stimulation (FES). Users typically command FES systems through other preserved, but unrelated and limited in number, volitional movements (eg, facial muscle activity, head movements, shoulder shrugs). We report the findings of an individual with traumatic high-cervical spinal cord injury who coordinated reaching and grasping movements using his own paralysed arm and hand, reanimated through implanted FES, and commanded using his own cortical signals through an intracortical brain-computer interface (iBCI)...
May 6, 2017: Lancet
keyword
keyword
59595
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"