keyword
MENU ▼
Read by QxMD icon Read
search

Fovea

keyword
https://www.readbyqxmd.com/read/28740565/whole-body-low-dose-computed-tomography-wbldct-in-assessment-of-patients-with-multiple-myeloma-pilot-study-and-standard-imaging-protocol-suggestion
#1
Robert Chrzan, Artur Jurczyszyn, Andrzej Urbanik
BACKGROUND: For decades, the main imaging tool in multiple myeloma (MM) patients was plain radiography. However, computed tomography (CT) has been included in the updated criteria of MM. The main disadvantage of CT is a considerably high radiation dose. Therefore, low-dose CT protocols could be a solution. The aim of the study was to (1) preliminarily analyse the usefulness of Whole-Body Low-Dose CT (WBLDCT) in the evaluation of patients with MM and (2) to make adjustments in the standard CT imaging protocol...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28739419/retinal-non-perfusion-in-the-posterior-pole-is-associated-with-increased-risk-of-neovascularization-in-central-retinal-vein-occlusion
#2
Luke Nicholson, Clara Vazquez-Alfageme, Namritha V Patrao, Ioanna Triantafyllopolou, James W Bainbridge, Philip G Hykin, Sobha Sivaprasad
PURPOSE: To review the definition of ischaemic central retinal vein occlusion (CRVO) and stratify the risk of neovascular complication based on wider areas of visible retinal non-perfusion. DESIGN: Retrospective consecutive case series and image analysis study METHODS: Setting: Moorfields Eye Hospital, London, United Kingdom. STUDY POPULATION: 42 consecutive treatment naïve eyes with CRVO imaged with ultra-widefield angiography with a minimum of 12 months follow-up...
July 21, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28739381/role-of-parafovea-in-blur-perception
#3
Abinaya Priya Venkataraman, Aiswaryah Radhakrishnan, Carlos Dorronsoro, Linda Lundström, Susana Marcos
The blur experienced by our visual system is not uniform across the visual field. Additionally, lens designs with variable power profile such as contact lenses used in presbyopia correction and to control myopia progression create variable blur from the fovea to the periphery. The perceptual changes associated with varying blur profile across the visual field are unclear. We therefore measured the perceived neutral focus with images of different angular subtense (from 4° to 20°) and found that the amount of blur, for which focus is perceived as neutral, increases when the stimulus was extended to cover the parafovea...
July 21, 2017: Vision Research
https://www.readbyqxmd.com/read/28737759/outcome-of-universal-newborn-eye-screening-with-wide-field-digital-retinal-image-acquisition-system-a-pilot-study
#4
P Goyal, T R Padhi, T Das, L Pradhan, S Sutar, S Butola, U C Behera, L Jain, S Jalali
PurposeTo evaluate the outcome of universal newborn eye screening with wide-field digital retinal imaging (WFDRI) system.MethodsIn this pilot study, we examined 1152 apparently healthy newborn infants in the obstetrics and gynecology ward of a civil hospital in Eastern India over 1.5 years. The examination included external eye examination, red reflex test and fundus imaging by WFDRI (RetCam II, Clarity medical system, Pleasanton, CA, USA) by a trained optometrist. The pathologies detected, net monetary gain and skilled manpower saved were documented...
July 24, 2017: Eye
https://www.readbyqxmd.com/read/28735646/hyperhomocysteinemia-and-age-related-macular-degeneration-role-of-inflammatory-mediators-and-pyroptosis-a-proposal
#5
Mahavir Singh, Suresh C Tyagi
Age-related macular degeneration (AMD) and pyroptosis cause irreversible vascular changes in the eyes leading to central vision loss in patients. It is the most common eye disease affecting millions of people aged 50years or older, and is slowly becoming a major health problem worldwide. The disease mainly affects macula lutea, an oval-shaped pigmented area surrounding fovea near the center of retina, a region responsible for visual acuity. It is fairly a complex disease as genetics of patients, environmental triggers as well as risk factors such as age, family history of CVDs, diabetes, gender, obesity, race, hyperopia, iris color, smoking, diabetes, exposure to sun light and pyroptosis have all been clubbed together as probable causes of macular degeneration...
August 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28728160/structural-changes-of-the-macula-on-optical-coherence-tomography-after-vitrectomy-for-proliferative-diabetic-retinopathy
#6
Jong Chan Im, Jong Ho Kim, Dong Ho Park, Jae Pil Shin
PURPOSE: This study aimed to evaluate the relationship between macular structural changes and visual prognosis after pars plana vitrectomy (PPV) for proliferative diabetic retinopathy. METHODS: The study included 60 eyes that had undergone PPV. Macular optical coherence tomography (OCT) findings were classified into 5 groups preoperatively and 10 groups postoperatively. Best-corrected visual acuity (BCVA) were analyzed according to pre- and postoperative OCT. RESULTS: From the preoperative OCT, normal fovea with/without traction, normal fovea with preretinal hemorrhage, and tractional retinal detachment involving fovea showed an increase in BCVA after PPV (all p < 0...
July 21, 2017: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/28724828/ring-shaped-myelinated-retinal-nerve-fibers-at-fovea
#7
Serdar Ozates, Mehmet Yasin Teke
We aim to report an unusual case of myelinated retinal nerve fibers (MRNFs) at fovea. A 39-year-old woman presented with visual impairment and her visual acuity was 20/80 in the right eye. Ophthalmologic examination revealed MRNF lesions at inferior and superior poles of optic disc in the right eye. Furthermore, a ring-shaped MRNF lesion with feathery edges was observed at fovea. MRNF lesions are rarely seen at macula, and to our knowledge, this is the first report of an MRNF lesion at fovea.
July 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28719903/thinning-of-inner-retinal-layers-after-vitrectomy-with-silicone-oil-versus-gas-endotamponade-in-eyes-with-macula-off-retinal-detachment
#8
Konstantine Purtskhvanidze, Jost Hillenkamp, Jan Tode, Olaf Junge, Jürgen Hedderich, Johann Roider, Felix Treumer
PURPOSE: To evaluate retinal layer thickness with optical coherence tomography (OCT) in eyes with macula-off retinal detachment after silicone oil (SiO) or gas endotamponade. PROCEDURES: Cross-sectional study of 40 eyes with macula-off rhegmatogenous retinal detachment that underwent vitrectomy. 20 eyes received SiO tamponade and 20 matched eyes received gas. 33 healthy fellow eyes served as controls. Macular spectral domain OCT was performed with automated layer detection in the 5 inner subfields of the Early Treatment Diabetic Retinopathy Study (ETDRS) map...
July 19, 2017: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/28718315/ulnar-styloid-base-fractures-cause-distal-radioulnar-joint-instability-in-a-cadaveric-model
#9
Tyler S Pidgeon, Joseph J Crisco, Gregory R Waryasz, Douglas C Moore, Manuel F DaSilva
BACKGROUND: The deep portion of the distal radioulnar ligaments (DRUL) inserts on the ulnar fovea and is the most important stabilizer of the distal radioulnar joint (DRUJ). Ulnar styloid base fractures that include the ulnar fovea may cause DRUJ instability. METHODS: DRUJ stability in pronosupination was evaluated in 12 fresh-frozen upper extremities (4 female) aged 52 to 68 years (mean: 58.8 years) using a custom fixture, which allowed free rotation of the radius around the fixed ulna...
January 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28713105/evaluation-of-the-current-techniques-and-introduction-of-a-novel-approach-for-estimating-maxillary-anterior-teeth-dimensions
#10
Mohammed E Sayed, Amit Porwal, Nida A Al-Faraj, Amal M Bajonaid, Hassan A Sumayli
INTRODUCTION: Several techniques and methods have been proposed to estimate the anterior teeth dimensions in edentulous patients. However, this procedure remains challenging especially when preextraction records are not available. Therefore, the purpose of this study is to evaluate some of the existing extraoral and intraoral methods for estimation of anterior tooth dimensions and to propose a novel method for estimation of central incisor width (CIW) and length (CIL) for Saudi population...
July 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28709702/clinical-and-morphologic-characteristics-of-mek-inhibitor-associated-retinopathy-differences-from-central-serous-chorioretinopathy
#11
Jasmine H Francis, Larissa A Habib, David H Abramson, Lawrence A Yannuzzi, Murk Heinemann, Mrinal M Gounder, Rachel N Grisham, Michael A Postow, Alexander N Shoushtari, Ping Chi, Neil H Segal, Rona Yaeger, Alan L Ho, Paul B Chapman, Federica Catalanotti
PURPOSE: To investigate the clinical and morphologic characteristics of serous retinal disturbances in patients taking mitogen-activated protein kinase kinase (MEK) inhibitors. PARTICIPANTS: A total of 313 fluid foci in 50 eyes of 25 patients receiving MEK inhibitors for treatment of their metastatic cancer, who had evidence of serous retinal detachments confirmed by optical coherence tomography (OCT). DESIGN: Single-center, retrospective cohort study...
July 12, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28704921/eys-mutations-causing-autosomal-recessive-retinitis-pigmentosa-changes-of-retinal-structure-and-function-with-disease-progression
#12
David B McGuigan, Elise Heon, Artur V Cideciyan, Rinki Ratnapriya, Monica Lu, Alexander Sumaroka, Alejandro J Roman, Vaishnavi Batmanabane, Alexandra V Garafalo, Edwin M Stone, Anand Swaroop, Samuel G Jacobson
Mutations in the EYS (eyes shut homolog) gene are a common cause of autosomal recessive (ar) retinitis pigmentosa (RP). Without a mammalian model of human EYS disease, there is limited understanding of details of disease expression and rates of progression of the retinal degeneration. We studied clinically and with chromatic static perimetry, spectral-domain optical coherence tomography (OCT), and en face autofluoresence imaging, a cohort of 15 patients (ages 12-51 at first visit), some of whom had longitudinal data of function and structure...
July 12, 2017: Genes
https://www.readbyqxmd.com/read/28689167/the-interpretation-of-results-of-10-2-visual-fields-should-consider-individual-variability-in-the-position-of-the-optic-disc-and-temporal-raphe
#13
Fumi Tanabe, Chota Matsumoto, Allison M McKendrick, Sachiko Okuyama, Shigeki Hashimoto, Yoshikazu Shimomura
AIMS: To clarify the anatomical relation between the optic disc and temporal raphe and to examine how these are related to test points in the 10-2 visual field test pattern. SUBJECTS AND METHODS: For 22 eyes of volunteers with normal vision (+0.75 D spherical equivalent 7.88 D), a volume scan was used to obtain en-face images from a plane fitted to the inner limiting membrane using optical coherence tomography (OCT). The clearest en-face retinal nerve fibre (RNF) image was chosen for each subject and superimposed on fundus photographs using blood vessels for alignment...
July 8, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28687852/optical-coherence-tomographic-imaging-of-posterior-episclera-and-tenon-s-capsule
#14
Kyoko Ohno-Matsui, Yuxin Fang, Kei Morohoshi, Jost B Jonas
Purpose: To investigate structural features of the posterior episclera and Tenon's capsule in patients with high myopia. Methods: This hospital-based observational study included highly myopic eyes (myopic refractive error > -8 diopters or axial length ≥26.5 mm) in which the posterior sclera in its full thickness could be visualized on swept-source optical coherence tomography (OCT) images in all 12 radial scans centered on the fovea. We assessed the posterior episclera and Tenon's capsule...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28687219/diabetic-macular-edema-with-and-without-subfoveal-neuroretinal-detachment-two-different-morphological-and-functional-entities
#15
Stela Vujosevic, Tommaso Torresin, Marianna Berton, Silvia Bini, Enrica Convento, Edoardo Midena
PURPOSE: To assess specific morphologic and functional characteristics in eyes with diabetic macular edema (DME) with subfoveal neuroretinal detachment (SND+) vs DME without SND (SND-). DESIGN: Cross-sectional, prospective, comparative case series. METHODS: Seventy two patients (72 eyes: 22 eyes SND+ and 50 eyes SND-) with treatment-naïve, center-involving DME were evaluated. Data gathering included fundus color photographs, fluorescein angiography, spectral-domain optical coherence tomography (SD-OCT), best corrected visual acuity (BCVA), and microperimetry...
July 4, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28684047/macular-choroidal-thickness-after-vitreoretinal-surgery-long-term-effect-of-pars-plana-vitrectomy-with-and-without-encircling-scleral-buckling-surgery
#16
I Gama, H Proença, A Gonçalves, M Faria, L Almeida, T Bernardo, R Couceiro, M Monteiro-Grillo
PURPOSE: To evaluate the macular choroidal thickness (CT) of eyes subjected to pars plana vitrectomy (PPV) whether or not combined with encircling scleral buckling (ESB) surgery for primary rhegmatogenous retinal detachment repair at 6 months or more after surgery. METHODS: This observational study included: 15 eyes (15 patients) submitted to combined ESB+PPV; 15 eyes submitted to PPV and their respective 30 normal fellow eyes (FE). Two 6mm lineal perpendicular optical coherence tomography B-scans centred on the fovea with enhanced depth imaging were performed on each eye...
July 3, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28677374/retinal-ganglion-cell-inner-plexiform-layer-thickness-in-patients-with-parkinson-s-disease
#17
Maja Živković, Volkan Dayanir, Jelena Stamenović, Srdjan Ljubisavljević, Ana Pražić, Marko Zlatanović, Gordana Zlatanović, Vesna Jakšić, Marija Radenković, Svetlana Jovanović
<i><b>Introduction: </b> The aim of the paper was to analyze the changes in the macular ganglion cell layer and inner plexiform layer (GCL-IPL) thickness in patients with Parkinson's disease. <b>Material and methods</b>: The study enrolled 46 patients with established diagnosis of Parkinson's disease and 46 healthy subjects. Both groups were age- and gender-matched. An OCT protocol, namely standardized Ganglion Cell Analysis algorithm was used to measure the thickness of the macular GCL-IPL layer...
2017: Folia Neuropathologica
https://www.readbyqxmd.com/read/28674835/photodynamic-therapy-in-chronic-central-serous-chorioretinopathy-with-subretinal-fluid-outside-the-fovea
#18
Elon H C van Dijk, Greet Dijkman, Camiel J F Boon
PURPOSE: To assess the efficacy of photodynamic therapy (PDT) in patients with chronic central serous chorioretinopathy (cCSC), in whom subretinal fluid (SRF) was solely present outside the foveal area. METHODS: In this retrospective study, 16 eyes of 15 cCSC patients who received half-dose PDT because of notable subjective visual complaints due to the presence of extrafoveal SRF, were included. An ophthalmic examination was performed before treatment, including Early Treatment Diabetic Retinopathy Study best-corrected visual acuity measurement, applanation tonometry, slit-lamp examination, and indirect ophthalmoscopy, followed by multimodal imaging, including fundus photography, fundus autofluorescence, spectral-domain optical coherence tomography (OCT), enhanced-depth imaging OCT of the choroid, fluorescein angiography, and indocyanine green angiography...
July 3, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28662236/earlier-saccades-to-task-relevant-targets-irrespective-of-relative-gain-between-peripheral-and-foveal-information
#19
Christian Wolf, Alexander C Schütz
Saccades bring objects of interest onto the fovea for high-acuity processing. Saccades to rewarded targets show shorter latencies that correlate negatively with expected motivational value. Shorter latencies are also observed when the saccade target is relevant for a perceptual discrimination task. Here we tested whether saccade preparation is equally influenced by informational value as it is by motivational value. We defined informational value as the probability that information is task-relevant times the ratio between postsaccadic foveal and presaccadic peripheral discriminability...
June 1, 2017: Journal of Vision
https://www.readbyqxmd.com/read/28654631/changes-in-choroidal-thickness-in-clinically-significant-pseudophakic-cystoid-macular-edema
#20
Efrat Fleissig, Shai Cohen, Matias Iglicki, Michaella Goldstein, Dinah Zur
PURPOSE: To investigate choroidal thickness in eyes with clinically significant pseudophakic cystoid macular edema (PCME) during the acute phase and following resolution of the edema, using enhanced depth imaging spectral domain optical coherence tomography (EDI-OCT). METHODS: This is a retrospective, observational clinical study. Patients' records were reviewed for cases of clinically significant PCME after uneventful phacoemulsification surgery. Choroidal thickness was measured at time of PCME diagnosis in both eyes and after CME resolution in the affected eye using enhanced depth imaging spectral domain optical coherence tomography (Spectralis; Heidelberg Engineering)...
June 20, 2017: Retina
keyword
keyword
19445
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"