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https://www.readbyqxmd.com/read/28817389/congenital-anomalies-of-the-optic-disc-insights-from-optical-coherence-tomography-imaging
#1
Karen W Jeng-Miller, Dean M Cestari, Eric D Gaier
PURPOSE OF REVIEW: Congenital anomalies of the optic nerve are rare but significant causes of visual dysfunction in children and adults. Accurate diagnosis is dependent on a thorough funduscopic examination, but can be enhanced by imaging information garnered from optical coherence tomography (OCT). We review common congenital optic nerve anomalies, including optic disc pit, optic nerve coloboma, morning glory disc anomaly, and hypoplasia of the optic nerve, review their systemic associations, and discuss insights from OCT imaging...
August 16, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28810042/oct-angiographic-findings-in-glucose-6-phosphate-dehydrogenase-deficiency
#2
Shangjun Jiang, Netan Choudhry
Fovea plana (FP) describes the abnormal absence of the foveal pit in the retina. It is a sign that is associated with prematurity, albinism, and other ophthalmic disorders. The authors present the optical coherence tomography angiographic findings in a case of a 19-year-old male with FP and glucose-6-phosphate dehydrogenase (G6PD) deficiency. G6PD deficiency is a very common condition that typically presents with hemolytic anemia and jaundice. G6PD deficiency is also known to affect vision, but these pathologies have been less well-characterized...
August 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28767251/role-of-absorbing-nanocrystal-cores-in-soft-photonic-crystals-a-spectroscopy-and-sans-study
#3
Astrid Rauh, Nico Carl, Ralf Schweins, Matthias Karg
Periodic superstructures of plasmonic nanoparticles have attracted significant interest since they can support coupled plasmonic modes making them interesting for plasmonic lasing, metamaterials and as light management structures in thin-film opto-electronic devices. We have recently shown that noble metal-hydrogel core-shell colloids allow for the fabrication of highly ordered 2-dimensional plasmonic lattices that show surface lattice resonances as the result of plasmonic/diffractive coupling [Adv. Optical Mater...
August 2, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28746249/optic-nerve-sheath-meningocele-simulating-an-optic-nerve-pit
#4
Sara E Lally, Ann P Murchison, Adam E Flanders, Jurij R Bilyk
No abstract text is available yet for this article.
July 25, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28731058/multicenter-study-of-pars-plana-vitrectomy-for-optic-disc-pit-maculopathy-macpit-study
#5
R Avci, Z Kapran, Ş Ozdek, M Y Teke, O Oz, D Guven, S Yilmaz, B Kaderli, A H Durukan, G Sobaci, Y B Unver, L Akduman, S Kaynak, I Dogan, U U Inan
PurposeTo evaluate surgical intervention with pars plana vitrectomy (PPV) for correction of optic disc pit maculopathy (ODP-M).Patients and methodsRetrospective chart review from 13 centres of 51 eyes of 50 patients with ODP-M who underwent PPV between 2002-2014. Anatomic and final best-corrected visual acuity (BCVA) outcomes were evaluated for all cases with different adjuvant techniques.ResultsThere were 23 males and 27 females with median age 25.5 (6-68) years. Preoperative median foveal thickness was 694...
July 21, 2017: Eye
https://www.readbyqxmd.com/read/28671921/papilloschisis-a-case-report
#6
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
#7
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
#8
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
#9
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...
August 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28604981/optic-disc-pit-maculopathy-after-prone-positioning-spine-surgery
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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