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Perimetry

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https://www.readbyqxmd.com/read/27906070/subretinal-adipose-tissue-derived-mesenchymal-stem-cell-implantation-in-advanced-stage-retinitis-pigmentosa-a-phase-i-clinical-safety-study
#1
Ayse Oner, Z Burcin Gonen, Neslihan Sinim, Mustafa Cetin, Yusuf Ozkul
BACKGROUND: This prospective clinical case series aimed to investigate the safety of subretinal adipose tissue-derived mesenchymal stem cell (ADMSC) implantation in advanced stage retinitis pigmentosa (RP). METHODS: This study included 11 patients with end-stage RP who received subretinal implantation of ADMSCs. All patients had a total visual field defect and five of them only had light perception. The best corrected visual acuity (BCVA) in the study was 20/2000...
December 1, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27896492/hemianopic-line-bisection-error-in-a-patient-with-alzheimer-s-disease
#2
Heeyoung Kang, Soo-Kyoung Kim, Ki-Jong Park, Nack-Cheon Choi, Oh-Young Kwon, Byeong Hoon Lim
Visual symptoms are frequently observed in posterior cortical atrophy compared to typical amnestic Alzheimer's disease (AD). We report the case of a patient with amnestic AD with long-lasting homonymous hemianopia. A 62-year-old woman, who was diagnosed in amnestic AD, complained of visual disturbance. She had left homonymous hemianopia in the perimetry test and left tactile extinction. Regardless of posture, retinotopically leftward error was observed on 21 cm line bisection test. Brain single photon emission computerized tomography (SPECT) showed bilateral temporoparietal hypoperfusion, which was more severe to the right than left side...
November 28, 2016: Neurological Sciences
https://www.readbyqxmd.com/read/27888083/clinical-and-imaging-evaluation-of-the-transuncus-selective-amygdalo-hippocampectomy
#3
Enrico Ghizoni, Roger Matias, Stefan Lieber, Brunno Machado de Campos, Clarissa Lin Yasuda, João Paulo Sant Ana Santos de Souza, Pamela Castro Pereira, Augusto Amato, Andrei Fernandes Joaquim, Tátila Martins Lopes, Helder Tedeschi, Fernando Cendes
BACKGROUND: Various reports described the transuncus approach (TU) as a selective route to the amygdala and hippocampus, but this approach has not yet being submitted to a solid post operative imaging analysis. The objective of this study was to evaluate the anatomy, surgical technique, postoperative imaging analysis and outcome in a series of temporal lobe epilepsy (TLE) patients who underwent to selective amigdalo-hippocampectomy (SHA) via TU. METHODS: This is a prospective study of 25 consecutive patients who underwent to selective amigdalo-hippocampectomy through TU...
November 22, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27885592/normal-threshold-size-of-stimuli-in-children-using-a-game-based-visual-field-test
#4
Yanfang Wang, Zaria Ali, Siddharth Subramani, Susmito Biswas, Cecilia Fenerty, David B Henson, Tariq Aslam
INTRODUCTION: The aim of this study was to demonstrate and explore the ability of novel game-based perimetry to establish normal visual field thresholds in children. METHODS: One hundred and eighteen children (aged 8.0 ± 2.8 years old) with no history of visual field loss or significant medical history were recruited. Each child had one eye tested using a game-based visual field test 'Caspar's Castle' at four retinal locations 12.7° (N = 118) from fixation...
November 24, 2016: Ophthalmology and Therapy
https://www.readbyqxmd.com/read/27872777/optic-disk-pit-with-sudden-central-visual-field-scotoma
#5
Nikol Panou, Demetrios G Vavvas
Purpose. To describe a case of optic disk pit (ODP) with sudden central visual field scotoma. Methods. A 49-year-old woman presented, reporting sudden painless central visual field loss 3 months prior to presentation. Neuroophthalmologic, systematic, and laboratory evaluation and full imaging processes were performed. Results. Fundoscopy and color photography demonstrated an optic disk pit inferotemporally. Perimetry identified central visual field horizontal scotoma. OCT revealed absence of serous retinal detachment, but disclosed inner retina thinning corresponding to the area of the visual field loss...
2016: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/27858858/optic-neuritis-as-an-initial-presentation-of-primary-sj%C3%A3-gren-syndrome-a-case-report-and-literature-review
#6
Jia-Yue Sun, Zheng Liu, Peng Zhao, Tao Liu
BACKGROUND: Primary Sjögren syndrome (pSS) is a progressive autoimmune disease that primarily affects exocrine glands. The clinical presentation of pSS may vary from an asymptomatic condition to severe skin symptom, resulting in a difficult and challenging diagnosis and treatment. METHODS AND RESULTS: Here, we report a 47-year-old Chinese woman who lost vision in the right eye for 7 days. She had been misdiagnosed with primary optic neuritis for 3 months. After 3 months, the results of immunohistochemistry, salivary gland scintigraphy, and antibody tests proved the diagnosis of pSS...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27857487/macular-thickness-assessment-in-patients-with-glaucoma-and-its-correlation-with-visual-fields
#7
Mafalda Mota, Fernando T Vaz, Mário Ramalho, Catarina Pedrosa, Maria Lisboa, Paulo Kaku, Florindo Esperancinha
AIM: To determine the relationship between macular thickness (MT) and visual field (VF) parameters, as well as with changes in the retinal nerve fiber layer (RNFL) thickness in patients with glaucoma and ocular hypertension (OH). MATERIALS AND METHODS: Cross-sectional statistical analysis of spectral domain optical coherence tomography (SD-OCT) compared with several VF parameters (mean defect - MD and loss variance - LV), in a nonrandom sample of 70 eyes from patients with glaucoma or OH...
September 2016: Journal of Current Glaucoma Practice
https://www.readbyqxmd.com/read/27847689/a-comparison-of-perimetric-results-from-a-tablet-perimeter-and-humphrey-field-analyzer-in-glaucoma-patients
#8
Yu Xiang George Kong, Mingguang He, Jonathan G Crowston, Algis J Vingrys
PURPOSE: To determine the correlation between the perimetric outcomes from perimetry software Melbourne Rapid Fields (MRF) run on an Apple iPad tablet and those from the Humphrey Field Analyzer (HFA). METHODS: The MRF software was designed with features including variable fixation and fast thresholding using Bayes logic. Here, we report a cross-sectional study on 90 eyes from 90 participants: 12 had normal optic nerves and 78 had glaucoma with various degrees of visual field loss (41 mild and 37 moderate-severe)...
November 2016: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/27834960/diagnostic-ability-of-humphrey-perimetry-octopus-perimetry-and-optical-coherence-tomography-for-glaucomatous-optic-neuropathy
#9
B Monsalve, A Ferreras, P Calvo, J A Urcola, M Figus, J Monsalve, P Frezzotti
PurposeTo evaluate and compare the diagnostic accuracy of the Humphrey Field Analyzer (HFA), Octopus perimetry, and Cirrus OCT for glaucomatous optic neuropathy.MethodsEighty-eight healthy individuals and 150 open-angle glaucoma patients were consecutive and prospectively selected. Eligibility criteria for the glaucoma group were intraocular pressure ≥21 mm Hg and glaucomatous optic nerve head morphology. All subjects underwent a reliable standard automated perimetry with the HFA and Octopus perimeter, and were imaged with the Cirrus OCT...
November 11, 2016: Eye
https://www.readbyqxmd.com/read/27829104/physiologic-statokinetic-dissociation-is-eliminated-by-equating-static-and-kinetic-perimetry-testing-procedures
#10
Jack Phu, Noha Al-Saleem, Michael Kalloniatis, Sieu K Khuu
In the present study, we measured the extent of statokinetic dissociation (SKD) in normal observers and then equated the psychophysical tasks into a two-interval forced choice (2IFC) procedure. In Experiment 1, we used the Humphrey visual field analyzer in static perimetry and automated kinetic perimetry modes to measure contrast sensitivity thresholds and the Goldmann manual kinetic perimeter to measure isopters. This was carried out using a Goldmann size II target. Goldmann kinetic perimetry was performed manually with both inward (peripheral to center) and outward (center to periphery) directions of movement to deduce an "average" isopter...
November 1, 2016: Journal of Vision
https://www.readbyqxmd.com/read/27829030/smaller-fixation-target-size-is-associated-with-more-stable-fixation-and-less-variance-in-threshold-sensitivity
#11
Kazunori Hirasawa, Kana Okano, Risako Koshiji, Wakana Funaki, Nobuyuki Shoji
The aims of this randomized observational case control study were to quantify fixation behavior during standard automated perimetry (SAP) with different fixation targets and to evaluate the relationship between fixation behavior and threshold variability at each test point in healthy young participants experienced with perimetry. SAP was performed on the right eyes of 29 participants using the Octopus 900 perimeter, program 32, dynamic strategy. The fixation targets of Point, Cross, and Ring were used for SAP...
2016: PloS One
https://www.readbyqxmd.com/read/27820873/increased-plasma-cgmp-in-a-family-with-autosomal-recessive-retinitis-pigmentosa-due-to-homozygous-mutations-in-the-pde6a-gene
#12
Ulrika Kjellström, Patricia Veiga-Crespo, Sten Andréasson, Per Ekström
Purpose: To describe genotype and phenotype in a family with autosomal recessive retinitis pigmentosa (arRP) carrying homozygous mutations in the gene for the α-subunit of cyclic guanosine monophosphate (cGMP)-hydrolyzing phosphodiesterase 6 (PDE6A). Moreover, to compare their plasma cGMP levels to controls, exploring the possible role for cGMP in RP diagnostics. Methods: Seven siblings and their parents were recruited. Microarray, verified by Sanger sequencing, was used for genotyping...
November 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27820422/the-relation-of-white-on-white-standard-automated-perimetry-short-wavelength-perimetry-and-optic-coherence-tomography-parameters-in-ocular-hypertension
#13
Ceyda Başkan, Özlem G Köz, Rahmi Duman, Sabite E Gökçe, Ahmet A Yarangümeli, Gülcan Kural
PURPOSE: The purpose of this study is to examine the demographics, clinical properties, and the relation between white-on-white standard automated perimetry (SAP), short wavelength automated perimetry (SWAP), and optical coherence tomographic (OCT) parameters of patients with ocular hypertension. MATERIALS AND METHODS: Sixty-one eyes of 61 patients diagnosed with ocular hypertension in the Ankara Numune Education and Research Hospital ophthalmology unit between January 2010 and January 2011 were included in this study...
December 2016: Journal of Glaucoma
https://www.readbyqxmd.com/read/27815676/-recovery-time-as-a-potential-new-progression-parameter-for-patients-with-advanced-glaucomatous-optic-atrophy
#14
B Hohberger, S Mißlinger, F Horn, J Kremers
BACKGROUND: Functional tests in glaucoma diagnosis can monitor a potential perimetric progression. However white-on-white perimetry is limited in advanced glaucoma, whereas contrasts were detected reproducibly. Especially when stressing (i. e. adapting) the visual system, subsequent measurements yielded different results-the visual system needs a "recovery time". In the present study the recovery time was investigated in patients with advanced glaucoma. Additionally correlation analysis was done with standard perimetric parameters...
November 4, 2016: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/27800239/comparison-of-pattern-electroretinography-and-optical-coherence-tomography-parameters-in-patients-with-primary-open-angle-glaucoma-and-ocular-hypertension
#15
Semra Tiryaki Demir, Mehmet Ersin Oba, Ezgi Tuna Erdoğan, Mahmut Odabaşı, Ayşe Burcu Dirim, Mehmet Demir, Efe Can, Orhan Kara, Selam Yekta Şendül
OBJECTIVES: To investigate the correlation of visual field (VF), pattern electroretinography (PERG) and Fourier domain optical coherence tomography (FD-OCT) results in patients with ocular hypertension (OHT) and early primary open-angle glaucoma (POAG). MATERIALS AND METHODS: The study included 72 eyes of 37 patients with early POAG, 76 eyes of 38 patients with OHT, and 60 eyes of 30 controls. All subjects underwent full ophthalmologic examination, VF assessment with 24-2 Humphrey standard automated perimetry (Swedish Interactive Thresholding Algorithm (SITA)-Standard), retinal nerve fiber layer (RNFL) and ganglion cell complex (GCC) thickness measurement with FD-OCT, and PERG P50 and N95 wave latency and amplitude measurements with electroretinography (Nihon Kohden)...
December 2015: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/27799733/steady-state-pattern-electroretinogram-and-frequency-doubling-technology-in-anisometropic-amblyopia
#16
Costantino Schiavi, Filippo Tassi, Alessandro Finzi, Ernesto Strobbe, Mauro Cellini
BACKGROUND: Steady-state pattern electroretinogram (PERG) and frequency doubling technology (FDT) perimetry can be used to selectively investigate the activity of the M-Y ganglion cells in adult anisometropic amblyopes. METHODS: Fifteen normal subjects (mean 27.8±4.1 years) and 15 adults with anisometropic amblyopia (mean 28.7±5.9 years) were analyzed using steady-state PERG and FDT. RESULTS: The amplitude of steady-state PERG was significantly different not only among the control group and both the amblyopic eye (P=0...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27790630/central-visual-field-sensitivity-data-from-microperimetry-with-spatially-dense-sampling
#17
Andrew T Astle, Iram Ali, Jonathan Denniss
Microperimetry, also referred to as fundus perimetry or fundus-driven perimetry, enables simultaneous acquisition of visual sensitivity and eye movement data. We present sensitivity data collected from 60 participants with normal vision using gaze-contingent perimetry. A custom designed spatially dense test grid was used to collect data across the visual field within 13° of fixation. These data are supplemental to a study in which we demonstrated a spatial interpolation method that facilitates comparison of acquired data from any set of spatial locations to normative data and thus screening of individuals with both normal and non-foveal fixation (Denniss and Astle, 2016) [1]...
December 2016: Data in Brief
https://www.readbyqxmd.com/read/27784065/effect-of-restricting-perimetry-testing-algorithms-to-reliable-sensitivities-on-test-retest-variability
#18
Stuart K Gardiner, Steven L Mansberger
Purpose: We have previously shown that sensitivities obtained at severely damaged visual field locations (<15-19 dB) are unreliable and highly variable. This study evaluates a testing algorithm that does not present very high contrast stimuli in damaged locations above approximately 1000% contrast, but instead concentrates on more precise estimation at remaining locations. Methods: A trained ophthalmic technician tested 36 eyes of 36 participants twice with each of two different testing algorithms: ZEST0, which allowed sensitivities within the range 0 to 35 dB, and ZEST15, which allowed sensitivities between 15 and 35 dB but was otherwise identical...
October 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27782956/predictive-value-of-hrt-stereometric-parameters-and-blue-on-yellow-perimetry-global-indices-in-glaucoma-suspected-subjects
#19
Konstantinos Rallis, George D Kymionis, Ilias Georgalas, Marilita M Moschos, Chryssanthi Koutsandrea, Michael A Grentzelos, Dimitris Papaconstantinou
OBJECTIVE: To determine subtle changes of Heidelberg retina tomography (HRT) stereometric parameters and blue-on-yellow (B/Y) perimetry global indices for the early diagnosis of glaucoma in suspected subjects. PATIENTS AND METHODS: Cross-sectional data on 174 eyes of 87 subjects from a larger cohort, attending the Glaucoma Department of the "G. Gennimatas" General Hospital of Athens from January 2004 to February 2014, were used in the study. Subjects were assigned to 3 groups: (a) "normals" not requiring treatment throughout the study (group 1), (b) suspects who developed glaucoma and required treatment during the study (group 2), and (c) patients with incipient glaucoma (group 3)...
December 2016: Journal of Glaucoma
https://www.readbyqxmd.com/read/27778463/detection-of-glaucoma-progression-by-perimetry-and-optic-disc-photography-at-different-stages-of-the-disease-results-from-the-early-manifest-glaucoma-trial
#20
HannaMaria Öhnell, Anders Heijl, Harald Anderson, Boel Bengtsson
PURPOSE: To compare the earliest detection of progression in visual fields and monoscopic optic disc photographs at different stages of manifest glaucoma. METHODS: This study evaluated 306 eyes in 249 patients with manifest open-angle glaucoma included in the Early Manifest Glaucoma Trial (EMGT). All patients in the trial were followed up regularly by standard automated perimetry and monoscopic optic disc photography, and the median follow-up time was 8 years. Progression was assessed in series of optic disc photographs and in series of visual fields using glaucoma change probability maps and the predefined EMGT progression criterion...
October 25, 2016: Acta Ophthalmologica
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