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https://www.readbyqxmd.com/read/28671921/papilloschisis-a-case-report
#1
Lina Osman, Sundeep Deol, Diana Mather, Subhanjan Mukherji
We report a case of papilloschisis, where the schisis is noted within the optic nerve tissue with no associated disc pit. This has not been reported in the literature to the best of our knowledge.
June 30, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28665476/incidence-and-evolution-of-subretinal-precipitates-in-optic-disc-pit-maculopathy
#2
Irini Chatziralli, George Theodossiadis, Dimitrios Brouzas, Panagiotis Theodossiadis
PURPOSE: To study the evolution of subretinal precipitates coexistent with optic disc pit (ODP) maculopathy from their appearance at baseline examination until their absorption after successful treatment. METHODS: Participants in this retrospective, multicenter study were 42 patients with ODP maculopathy, in whom complete ocular examination was performed, including visual acuity (VA) measurement, slit-lamp examination, color or red-free fundus photography, and optical coherence tomography at baseline after surgical treatment...
June 26, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28630797/spontaneous-resolution-of-optic-disc-pit-maculopathy
#3
Koushik Tripathy
No abstract text is available yet for this article.
June 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28616716/retinal-microstructures-are-altered-in-patients-with-idiopathic-infantile-nystagmus
#4
Jinu Han, Taekjune Lee, Jong Bok Lee, Sueng-Han Han
PURPOSE: To compare segmented retinal layer thicknesses between patients with idiopathic infantile nystagmus (IIN) and controls. METHODS: This retrospective case-control study included 66 patients with IIN and 66 age-matched controls. The retinal layers were examined using spectral domain optical coherence tomography with autosegmentation. Central foveal thickness (CFT), outer nuclear layer (ONL), and outer segment length (OSL) thickness were measured at the fovea center...
June 14, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28604981/optic-disc-pit-maculopathy-after-prone-positioning-spine-surgery
#5
Marcos Ruiz-Sánchez, Maria E Rodríguez-González-Herrero, Jenifer Ruiz-Sará
PURPOSE: To report a case of optic disc pit maculopathy after spine surgery performed in the prone position. METHODS: Case report. RESULTS: A 32-year-old man underwent spine surgery for disc herniation repair. He complained of visual acuity loss immediately after the procedure. Optic disc maculopathy with internal limiting membrane detachment was found to be the cause. Vitrectomy was scheduled after a 12-month follow-up without resolution of the maculopathy...
June 9, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28594996/echographic-assessment-of-optic-nerve-pit
#6
Kara M Cavuoto, Ta C Chang
No abstract text is available yet for this article.
June 8, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28579317/six3-in-a-small-population-of-progenitors-at-e8-5-is-required-for-neuroretinal-specification-via-regulating-cell-signaling-and-survival-in-mice
#7
Wei Liu, Ales Cvekl
Neuroretina and retinal pigment epithelium (RPE) are differentiated from the progenitors in optic vesicles, but it is unclear when and how the two lineages are segregated. Manipulation of chick embryos reveals that the early anteroventral optic vesicle is crucial for neuroretinal development, but the molecular mechanism is unclear. Homeodomain transcription factor Six3 is required for neuroretinal specification and is dispensable for RPE formation, but the cell fates of Six3-deficient progenitors and the origins of remnant RPE are unknown...
August 1, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28574004/surgical-management-of-optic-disc-pit-maculopathy-with-a-fovea-sparing-internal-limiting-membrane-flap
#8
Rupak Roy, Kumar Saurabh, Nicey Roy Thomas, Kalpita Das
Optic disc pit (ODP) is rare congenital cavitary anomaly of the optic disc. Serous detachment of macula is the most common complication of ODP and occurs in 25%-75% of these cases. Although various surgical techniques have been used for the treatment of ODP maculopathy; consensus still eludes as far as the optimal surgical approach is concerned. We herein report a case of ODP maculopathy in a young female treated successfully with vitrectomy, fovea sparing internal limiting membrane flap, and C3F8 tamponade...
May 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28562060/sphagnum-moss-as-an-indicator-of-contemporary-rates-of-atmospheric-dust-deposition-in-the-athabasca-bituminous-sands-region
#9
Gillian Mullan-Boudreau, Rene Belland, Kevin Devito, Tommy Noernberg, Rick Pelletier, William Shotyk
Sphagnum moss was collected from ombrotrophic (rain-fed) peat bogs to quantify dust emissions from the open-pit mining and upgrading of Athabasca bituminous sands (ABS). A total of 30 bogs were sampled in the ABS region, and 5 were sampled in central Alberta. Ash was separated into the acid-insoluble ash (AIA) and acid-soluble ash (ASA) fractions using HCl. The AIA concentrations increase toward industry from 0.4 ± 0.5% to 4.7 ± 2.0% over a distance of 30 km; the control site at the Utikuma Region Study Area (URSA) yielded 0...
June 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28542028/bilateral-optic-disc-pits-with-posterior-pituitary-ectopia
#10
Jonathan C Horton, A James Barkovich
Posterior pituitary ectopia has been reported previously in association with optic nerve hypoplasia, as a variant of septo-optic dysplasia. We describe a 14-year-old boy with posterior pituitary ectopia and bilateral optic disc pits. He had hypopituitarism and a reduction in visual acuity to 20/40 in each eye, owing to loss of foveal ganglion cells. Optic pits and posterior pituitary ectopia may have occurred together in the same subject by chance, but the rarity of both conditions suggests a possible association...
May 22, 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28514248/foveal-curvature-and-asymmetry-assessed-using-optical-coherence-tomography
#11
Dean A VanNasdale, Amanda Eilerman, Aaron Zimmerman, Nicky Lai, Keith Ramsey, Loraine T Sinnott
PURPOSE: The aims of this study were to use cross-sectional optical coherence tomography imaging and custom curve fitting software to evaluate and model the foveal curvature as a spherical surface and to compare the radius of curvature in the horizontal and vertical meridians and test the sensitivity of this technique to anticipated meridional differences. METHODS: Six 30-degree foveal-centered radial optical coherence tomography cross-section scans were acquired in the right eye of 20 clinically normal subjects...
June 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28512423/refined-internal-limiting-membrane-inverted-flap-technique-for-intractable-macular-detachment-with-optic-disc-pit
#12
Rumiko Hara, Yasutomo Tsukahara, Tsuyoshi Simoyama, Soutarou Mori
PURPOSE: To report a surgical technique for retinal detachment associated with optic disc pit (ODP) by using an internal limiting membrane (ILM) inverted flap as an obstacle between the vitreous cavity and subretinal space. CASE PRESENTATION: A 43-year-old man presented with decreased visual acuity in the right eye for 1 week due to macular detachment associated with ODP. After 2 unsuccessful surgeries, the retina was reattached by vitrectomy with an ILM inverted flap onto the ODP...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28511535/surface-morphology-evolution-mechanisms-of-ingan-gan-multiple-quantum-wells-with-mixture-n2-h2-grown-gan-barrier
#13
Xiaorun Zhou, Taiping Lu, Yadan Zhu, Guangzhou Zhao, Hailiang Dong, Zhigang Jia, Yongzhen Yang, Yongkang Chen, Bingshe Xu
Surface morphology evolution mechanisms of InGaN/GaN multiple quantum wells (MQWs) during GaN barrier growth with different hydrogen (H2) percentages have been systematically studied. Ga surface-diffusion rate, stress relaxation, and H2 etching effect are found to be the main affecting factors of the surface evolution. As the percentage of H2 increases from 0 to 6.25%, Ga surface-diffusion rate and the etch effect are gradually enhanced, which is beneficial to obtaining a smooth surface with low pits density...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28499056/recurrent-macular-detachment-due-to-occult-retinal-break-in-a-patient-with-optic-disc-pit
#14
Xi Chen, John B Miller, Dean Eliott
Serous macular detachment occurs in nearly 50% of eyes with optic disc pit. These macular detachments have been historically difficult to treat. The authors report a case of macular retinal detachment due to an occult juxtapapillary retinal break in a patient with optic disc pit refractory to prior treatments. This case demonstrates that a presumed serous detachment associated with an optic disc pit may have a rhegmatogenous etiology. [Ophthalmic Surg Lasers Imaging Retina. 2017;48:432-434.].
May 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28482872/disturbed-microcirculation-in-the-hands-of-patients-with-systemic-sclerosis-detected-by-fluorescence-optical-imaging-a-pilot-study
#15
Stefanie Friedrich, Susanne Lüders, Stephanie Gabriele Werner, Anne-Marie Glimm, Gerd-Rüdiger Burmester, Gabriela Riemekasten, Marina Backhaus, Sarah Ohrndorf
BACKGROUND: Utilising fluorescence optical imaging (FOI), the distribution of an intravenously applied colouring agent indocyanine green (ICG) can be analysed with the potential to identify malperfusion by little to no tissue enhancement. Systemic sclerosis (SSc) is characterised by the presence of digital ulcers reflecting progressive vasculopathy. The objective was to investigate the potential of FOI in the detection of disturbed microcirculation in the hands and fingers of patients with SSc and to link FOI findings to clinical signs of ischemia such as digital ulcers and pitting scars...
May 8, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28470322/a-one-dimensional-random-laser-based-on-artificial-high-index-contrast-scatterers
#16
Yanyan Wu, Yuhao Ren, Anqi Chen, Zhiyang Chen, Yunfeng Liang, Jinyu Li, Guanlin Lou, Hai Zhu, Xuchun Gui, Shuangpeng Wang, Zikang Tang
The realization of a one-dimensional (1D) random laser (RL) by using artificially fabricated scatterers is reported in this letter, and the lasing characteristic has also been investigated comprehensively. The manipulation of the lasing mode in the 1D microwire (MW) RL can be achieved through micro-pits prepared by the laser-ablation technique. Well-defined sharp lasing peaks were realized based on the coherence feedback process in the 1D optical waveguide. The near- and far-field images exhibit excellent spatial intensity distribution, and the stability of lasing modes has also been investigated...
June 1, 2017: Nanoscale
https://www.readbyqxmd.com/read/28468358/interference-effects-in-laser-induced-plasma-emission-from-surface-bound-metal-micro-particles
#17
Eyal Feigenbaum, Omer Malik, Alexander M Rubenchik, Manyalibo J Matthews
The light-matter interaction of an optical beam and metal micro-particulates at the vicinity of an optical substrate surface is critical to the many fields of applied optics. Examples of impacted fields are laser-induced damage in high power laser systems, sub-wavelength laser machining of transmissive materials, and laser-target interaction in directed energy applications. We present a full-wave-based model that predicts the laser-induced plasma pressure exerted on a substrate surface as a result of light absorption in surface-bound micron-scale metal particles...
May 1, 2017: Optics Express
https://www.readbyqxmd.com/read/28465066/bacterial-adhesion-not-inhibited-by-ion-releasing-bioactive-glass-filler
#18
Kumiko Yoshihara, Noriyuki Nagaoka, Yukinori Maruo, Hidehiko Sano, Yasuhiro Yoshida, Bart Van Meerbeek
OBJECTIVE: Bioactive glasses and surface pre-reacted glass-ionomer (sPRG) filler possess cariostatic properties owing to ion release. Many studies investigated potential cariostatic effects; few studies evaluated the surface stability and the structural changes their surfaces undergo in acidic conditions. METHODS: The surface resistance against acid attack and the surface receptiveness for bacterial adhesion and biofilm formation of a sPRG-filled (Beautifil ll, Shofu) and conventional glass-filled (Herculite XRV Ultra, Kerr) resin-based composite (RBC), and a conventional glass-ionomer cement (GIC; Fuji IX GP Extra, GC) were examined...
April 29, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28459526/organofunctional-silane-modification-of-aluminum-doped-zinc-oxide-surfaces-as-a-route-to-stabilization
#19
Rachael Matthews, Emily Glasser, Samuel C Sprawls, Roger H French, Timothy J Peshek, Emily Pentzer, Ina T Martin
Aluminum-doped zinc oxide (AZO) is a low-temperature processed transparent conductive oxide (TCO) made of earth abundant elements; its applications are currently limited by instability to heat, moisture, and acidic conditions. We demonstrate that the application of an organofunctional silane modifier mitigates AZO degradation and explore the interplay between performance and material composition and morphology. Specifically, we evaluate degradation of bare AZO and APTES (3-aminopropyltriethoxysilane)-modified AZO in response to damp heat (DH, 85 °C, 85% relative humidity) exposure over 1000 h and then demonstrate how surface modification impacts changes in electrical and optical properties and chemical composition in one of the most thorough studies to date...
May 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28419404/use-of-evicel-fibrin-sealant-in-optic-disc-pit-associated-macular-detachment
#20
Paulo Ricardo Chaves de Oliveira, Alan Richard Berger, David Robert Chow
Optic disc pit is a rare congenital anomaly of the optic nerve. Retinal detachment is a common complication with poor outcomes. Many surgical alternatives have been described for the treatment of this condition, producing variable results. Herein, the authors describe four cases of optic disc pit-associated macular detachment managed with pars plana vitrectomy, fluid-air exchange, drainage of subretinal fluid through the optic disc pit, temporal peripapillary laser, and application of Evicel fibrin sealant (human) (Ethicon, Bridgewater, NJ) over the optic disc head...
April 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
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