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Ophthalmic Research

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https://www.readbyqxmd.com/read/29421813/repeatability-and-reproducibility-of-foveal-avascular-zone-area-measurement-on-normal-eyes-by-different-optical-coherence-tomography-angiography-instruments
#1
Elisabetta Pilotto, Luisa Frizziero, Anna Crepaldi, Enrico Della Dora, Davide Deganello, Evelyn Longhin, Enrica Convento, Raffaele Parrozzani, Edoardo Midena
PURPOSE: To compare the foveal avascular zone (FAZ) area measurements produced by different optical coherence tomography angiography (OCTA). METHODS: Healthy enrolled volunteers underwent OCTA using 2 different devices: Spectralis HRA+OCTA (Heidelberg Engineering, Heidelberg, Germany) and RS-3000 Advance (Nidek, Gamagori, Japan). Two graders measured FAZ in both superficial (SCP) and deep (DCP) retinal capillary plexuses. The SCP and DCP en face images were visualized automatically segmenting 2 separate slabs defined by the arbitrary segmentation lines created by the software of each OCT device...
February 8, 2018: Ophthalmic Research
https://www.readbyqxmd.com/read/29414835/choroidal-thickness-with-swept-source-optical-coherence-tomography-versus-foveal-morphology-in-young-children-with-a-history-of-prematurity
#2
Wadim Bowl, Marianne Bowl, Silke Schweinfurth, Kerstin Holve, Monika Andrassi-Darida, Knut Stieger, Birgit Lorenz
AIM: Comparison of choroidal thickness (CT) and foveal morphology as seen with swept-source optical coherence tomography (SS-OCT) in children with a history of treated or spontaneously regressed retinopathy of prematurity (tROP or srROP) to assess the impact on best-corrected visual acuity (BCVA). METHODS: CT was measured by SS-OCT (DRI-OCT Triton; Topcon, USA) single scans of a 6-mm diameter around the fovea in 17 children with tROP or srROP (4-7 years of age) and compared to 25 controls (age-matched children and adults)...
February 7, 2018: Ophthalmic Research
https://www.readbyqxmd.com/read/29393247/optical-coherence-tomography-based-angiography-in-retinal-artery-occlusion-in-children
#3
Wojciech Hautz, Joanna Gołębiewska, Agnieszka Czeszyk-Piotrowicz
PURPOSE: To evaluate the role of optical coherence tomography (OCT)-based angiography (OCTA) in the diagnosis and monitoring of pediatric patients with retinal artery occlusion (RAO). MATERIAL AND METHODS: This retrospective study was conducted at the Department of Ophthalmology, The Children's Memorial Health Institute, in Warsaw between March 2015 and May 2016. Every patient underwent a complete ophthalmological examination. The diagnosis of the disease was based on fundus examination and fluorescein angiography (FA)...
January 24, 2018: Ophthalmic Research
https://www.readbyqxmd.com/read/29339637/corneal-collagen-crosslinking-combined-with-phototherapeutic-keratectomy-and-photorefractive-keratectomy-for-corneal-ectasia-after-laser-in-situ-keratomileusis
#4
Wei Zhu, Yunfei Han, Changxia Cui, Wenwen Xu, Xuan Wang, Xiaoxiao Dou, Linlin Xu, Yanyun Xu, Guoying Mu
PURPOSE: The aim of this study was to analyze the effects of corneal crosslinking (CXL) combined with phototherapeutic keratectomy (PTK) and photorefractive keratectomy (PRK) in halting the progression and improving the visual function of corneal ectasia after laser in situ keratomileusis (LASIK). METHODS: PTK-PRK-CXL was performed on 14 eyes of 14 patients who developed corneal ectasia after LASIK. The visual acuity, spherical refraction and cylinder, corneal topography indices, thinnest corneal thickness (TCT), and endothelial cell count were evaluated at baseline and at 1, 3, 6, and 12 months postoperatively...
January 17, 2018: Ophthalmic Research
https://www.readbyqxmd.com/read/29339646/automated-screening-for-diabetic-retinopathy-a-systematic-review
#5
Mads Fonager Nørgaard, Jakob Grauslund
PURPOSE: Worldwide ophthalmologists are challenged by the rapid rise in the prevalence of diabetes. Diabetic retinopathy (DR) is the most common complication in diabetes, and possible consequences range from mild visual impairment to blindness. Repetitive screening for DR is cost-effective, but it is also a costly and strenuous affair. Several studies have examined the application of automated image analysis to solve this problem. Large populations are needed to assess the efficacy of such programs, and a standardized and rigorous methodology is important to give an indication of system performance in actual clinical settings...
January 16, 2018: Ophthalmic Research
https://www.readbyqxmd.com/read/29332093/structure-function-correlation-in-hemianopic-vision-loss-in-children-aged-3-6-years-using-oct-and-svop-and-comparison-with-adult-eyes
#6
Wadim Bowl, Robert Knobloch, Silke Schweinfurth, Kerstin Holve, Knut Stieger, Birgit Lorenz
PURPOSE: To correlate visual field assessment with saccadic vector optokinetic perimetry (SVOP) in children with ganglion cell loss due to anterior pathway pathologies resulting in hemianopic visual field defects measured with optical coherence tomography (OCT). METHODS: 5 young (aged 3-6 years) and 5 adult patients with hemianopia, 10 healthy preschoolers (mean age 4.4 years), and 10 healthy adults (mean age 25.3 years) were tested with SVOP and OCT (focusing on the ganglion cell layer, GCL+)...
January 13, 2018: Ophthalmic Research
https://www.readbyqxmd.com/read/29268280/different-phenotypes-of-mild-nonproliferative-diabetic-retinopathy-with-different-risks-for-development-of-macular-edema-c-tracer-study
#7
Luísa Ribeiro, Rajeev Pappuru, Conceição Lobo, Dalila Alves, José Cunha-Vaz
PURPOSE: To evaluate diabetic retinopathy (DR) progression in patients with diabetes mellitus type 2 in 2 populations of different ethnicity. METHODS: A prospective observational study was designed to follow eyes/patients with mild nonproliferative DR, for 2 years or until the development of central-involved macular edema (CIME), in 2 centers from different regions of the world. A total of 205 eyes/patients fulfilled the inclusion/exclusion criteria and were included in this study...
December 22, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/29248913/fluocinolone-acetonide-intravitreal-implant-190-%C3%AE-g-iluvien%C3%A2-in-vitrectomized-versus-nonvitrectomized-eyes-for-the-treatment-of-chronic-diabetic-macular-edema
#8
Bernardete Pessoa, João Coelho, Nuno Correia, Natália Ferreira, Melo Beirão, Angelina Meireles
PURPOSE: To compare the functional and anatomical outcomes after a 0.2 µg/day fluocinolone acetonide (FAc) implant between vitrectomized and nonvitrectomized eyes with chronic diabetic macular edema (DME). METHODS: This is a retrospective, comparative analysis of 43 eyes with chronic DME. All eyes were treated with a single 0.2 µg/day FAc implant and followed up for a mean period of 8.5 months (median, 6.0 months; range, 1-21 months). The patients with a 0.2 µg/day FAc implant were divided into 2 groups: 24 eyes which had undergone pars plana vitrectomy prior to 0...
December 16, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/29237169/outer-retina-and-choroidal-thickness-in-intermediate-age-related-macular-degeneration-reticular-pseudodrusen-findings
#9
Pedro Camacho, Marco Dutra-Medeiros, Diogo Cabral, Rufino Silva
PURPOSE: To evaluate outer retina and choroidal thickness in subjects with intermediate age-related macular degeneration (iAMD) and to describe associations with the presence of reticular pseudodrusen (RPD). METHODS: This was a retrospective, cross-sectional analysis of 157 consecutive eyes (specifically: 62 eyes classified as having RPD and 95 eyes with drusen ≥125 µm). Only cases with digital color fundus photographs, red-free, and infrared, obtained and graded according to the Age-Related Eye Disease Study to define iAMD, were used for this study...
December 14, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/29207384/slc2a1-tag-snps-in-greek-patients-with-diabetic-retinopathy-and-nephropathy
#10
Vasileios Siokas, Anatoli Fotiadou, Efthimios Dardiotis, Maria G Kotoula, Sophia V Tachmitzi, Dimitrios Z Chatzoulis, Elias Zintzaras, Ioannis Stefanidis, Evangelia E Tsironi
Backround: Genetic variants are implicated in the development of diabetic retinopathy (DR) and nephropathy (DN). The role of solute carrier family 2-facilitated glucose transporter member 1 (SLC2A1), also known as glucose transporter (GLUT1), on DR and DN remain controversial. OBJECTIVE: Examination of the influence of tag SLC2A1 single-nucleotide polymorphisms (SNPs) on the development of DR and DN during the course of type 2 diabetes mellitus (T2DM). METHODS: A total of 169 patients with DR or DN, 107 uncomplicated T2DM patients, and 315 controls were recruited and genotyped for 14 SLC2A1 tag SNPs...
December 6, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/29186723/optical-coherence-tomography-angiography-in-optic-nerve-drusen
#11
Gilda Cennamo, Sabrina Tebaldi, Francesca Amoroso, Dimitri Arvanitis, Mariangelica Breve, Giovanni Cennamo
AIM: To determine the efficacy of optical coherence tomography angiography (OCT-A) in diagnosing optic nerve head flow impairment in patients with optic nerve drusen. METHODS: Patients affected by optic-nerve head drusen (ONHD) attending the Eye Clinic of the Federico II University of Naples were enrolled in this prospective case series between October 2015 and October 2016. Each patient underwent evaluation of best corrected visual acuity (BCVA), Goldman applanation tonometry, slit-lamp biomicroscopy, fundus examination, standard visual-field testing (perimetry), spectral domain (SD)-OCT and OCT-A...
November 30, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/29183023/the-recovery-of-microvascular-status-evaluated-by-optical-coherence-tomography-angiography-in-patients-after-successful-macular-hole-surgery
#12
Sibel Demirel, Mehmet Fatih Kağan Değirmenci, Serdar Bilici, Özge Yanik, Figen Batıoğlu, Emin Özmert, Numan Alp
PURPOSE: The aim of this study was to evaluate the optical coherence tomography angiography (OCTA) features of patients who underwent successful macular hole (MH) surgery. METHODS: Nineteen patients who underwent surgery in a single eye due to MH and 13 healthy subjects as a control group were included in the study. Vascular densities, flow indexes, and the foveal avascular zone (FAZ) area in superficial and deep retinal capillary plexuses were evaluated by OCTA in the right eyes of the control group, and both the surgical and healthy fellow eyes of the patients...
November 29, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/29161717/subconjunctival-prgf-fibrin-membrane-as-an-adjuvant-to-nonpenetrating-deep-sclerectomy-a-2-year-pilot-study
#13
Iñaki Rodríguez-Agirretxe, Vanesa Freire, Francisco Muruzabal, Gorka Orive, Eduardo Anitua, Elio Díez-Feijóo, Arantxa Acera
PURPOSE: To evaluate the potential role of the autologous PRGF (plasma rich in growth factors) fibrin membrane in tissue regeneration after glaucoma filtering surgery. MATERIALS AND METHODS: Ten patients with medically uncontrolled primary open-angle glaucoma underwent nonpenetrating deep sclerectomy and were treated with PRGF fibrin membrane as adjuvant. Intraocular pressure reduction was the primary outcome. This variable was measured preoperatively and also at each follow-up visit...
November 22, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/29131051/interocular-symmetry-of-choroidal-thickness-and-volume-in-healthy-eyes-on-optical-coherence-tomography
#14
Elvira Orduna, Ana Sanchez-Cano, Maria José Luesma, Itziar Perez-Navarro, Emilio Abecia, Isabel Pinilla
BACKGROUND: We aimed to determine the physiological symmetry, with spectral-domain optical coherence tomography, of choroidal measurements in a healthy population in all the areas defined in the Early Treatment Diabetic Retinopathy Study (ETDRS). METHODS: One hundred and fifty-four eyes of 77 healthy young adults between the ages of 19 and 32 years were enrolled. Differences in choroidal thickness (CT) and volume (CV) between the left and right eyes were calculated...
November 10, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/29084401/the-effect-of-a-decrease-in-intraocular-pressure-on-optic-nerve-function-in-patients-with-optic-nerve-drusen
#15
Dorota Pojda-Wilczek, Patrycja Wycisło-Gawron
PURPOSE: The aim of the study was to compare optic nerve function in eyes with brinzolamide-reduced intraocular pressure (IOP) and the fellow eyes of patients with optic disk drusen (ODD). METHODS: The study comprised 34 patients with bilateral ODD but no signs of any other ocular disease. The eyes with more advanced optic neuropathy were selected for treatment with an IOP-lowering drug, carbonic anhydrase inhibitor (brinzolamide); the fellow eyes served as the control...
October 31, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/29073609/modulation-of-the-proteasome-pathway-by-nano-curcumin-and-curcumin-in-retinal-pigment-epithelial-cells
#16
J Emanuel Ramos de Carvalho, Milan T Verwoert, Ilse M C Vogels, Sabine Schipper-Krom, Cornelis J F Van Noorden, Eric A Reits, Ingeborg Klaassen, Reinier O Schlingemann
INTRODUCTION: Curcumin has multiple biological effects including the modulation of protein homeostasis by the ubiquitin-proteasome system. The purpose of this study was to assess the in vitro cytotoxic and oxidative effects of nano-curcumin and standard curcumin and characterize their effects on proteasome regulation in retinal pigment epithelial (RPE) cells. METHODS: Viability, cell cycle progression, and reactive oxygen species (ROS) production were determined after treatment with nano-curcumin or curcumin...
October 27, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/29069653/intraocular-pressure-spikes-within-first-postoperative-hours-following-standard-trabeculectomy-incidence-and-associated-factors
#17
Felipe Daher, Izabela Almeida, Michele Ushida, Bernardo Soares, Syril Dorairaj, Fabio N Kanadani, Augusto Paranhos, Carolina P B Gracitelli, Tiago S Prata
PURPOSE: To evaluate the incidence of intraocular pressure (IOP) spikes within the first postoperative hours following trabeculectomy (TRAB) and to determine possible associated factors. METHODS: An observational study was carried out. We enrolled consecutive patients undergoing standard TRAB with mitomycin C. They were examined twice within the first few postoperative hours (hours 1-2 and 4-6) and 3 times after TRAB (on days 1, 7, and 30). Demographic and ocular data were collected...
October 26, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/29065425/multimodal-evaluation-of-the-fellow-eye-of-patients-with-retinal-angiomatous-proliferation
#18
Amélia Martins, Cláudia Farinha, Miguel Raimundo, Marta Lopes, Ana Rita Santos, Pedro Melo, Marco Marques, João Pedro Marques, Patrícia Barreto, Maria Luz Cachulo, Catarina Neves, José Cunha-Vaz, Rufino Silva
INTRODUCTION: We conducted a multimodal, cross-sectional evaluation. METHODS: Eyes were divided into 4 study groups: controls, early/intermediate age-related macular degeneration (AMD), fellow eyes of retinal angiomatous proliferation (RAP), and RAP eyes. Patients were evaluated with spectral-domain optical coherence tomography (OCT), enhanced depth imaging-OCT, and OCT angiography (OCTA). OCTA images were processed to generate maps of the vessel density and perfusion density of the superficial and deep retinal layers (SRL and DRL) and the choriocapillaris level (CL)...
October 25, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/29050001/expression-of-angiogenic-and-inflammatory-factors-in-choroidal-neovascularisation-derived-retinal-pigment-epithelium
#19
Christoph Ehlken, Maria-Magdalena Guichard, Günther Schlunck, Anima D Bühler, Gottfried Martin, Hansjürgen T Agostini
PURPOSE: Anti-angiogenic treatment is well established in the management of exudative age-related macular degeneration (AMD), but not sufficient in all patients. The characterisation of factors driving this chronic disease could serve to identify additional treatment options. The purpose of this study was to assess gene expression patterns and distinct changes in cells derived from surgically extracted choroidal neovascularisation (CNV) membranes. MATERIALS AND METHODS: The expression of >11,000 genes was analysed by means of a microarray in cells cultured from 2 late-stage CNV membranes compared to primary human retinal pigment epithelium (RPE) and ARPE-19 cells...
October 20, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/29045946/subfoveal-choroidal-and-macular-thickness-changes-after-phacoemulsification-using-enhanced-depth-imaging-optical-coherence-tomography
#20
Huizhong Jiang, Zhen Li, Ran Sun, Dachuan Liu, Ningpu Liu
PURPOSE: To assess changes in the thickness of the subfoveal retina and choroid after phacoemulsification using enhanced depth imaging optical coherence tomography (EDI-OCT). METHODS: A prospective study was conducted on 100 patients. The subfoveal choroidal thickness (SFCT) was measured at 7 points and the retinal thickness was measured at 5 points (before surgery, and 1 day, 1 week, 1 month, and 3 months after surgery). RESULTS: The foveal choroidal thickness showed a thickening trend (but p > 0...
October 19, 2017: Ophthalmic Research
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