40,799 results match your criteria Refractive Eyecare [Journal]


Hemodynamic Response of the Three Macular Capillary Plexuses in Dark Adaptation and Flicker Stimulation Using Optical Coherence Tomography Angiography.

Invest Ophthalmol Vis Sci 2019 Feb;60(2):694-703

Department of Ophthalmology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States.

Purpose: To assess retinal microvascular reactivity during dark adaptation and the transition to ambient light and after flicker stimulation using optical coherence tomography angiography (OCTA).

Methods: Fifteen eyes of 15 healthy participants were dark adapted for 45 minutes followed by OCTA imaging in the dark-adapted state. After 5 minutes of normal lighting, subjects underwent OCTA imaging. Read More

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http://dx.doi.org/10.1167/iovs.18-25478DOI Listing
February 2019

Macular spectral-domain optical coherence tomography values and correlations in healthy children.

Int Ophthalmol 2019 Feb 19. Epub 2019 Feb 19.

Università di Pisa-Dipartimento di patologia chirurgica medica, molecolare e dell'area critica, Via Savi n. 10, 56126, Pisa, PI, Italy.

Purpose: The aim of this study is to investigate potential correlations between age, gender, spherical equivalent and optical coherence tomography (OCT) retinal parameters among healthy children.

Methods: A macular spectral-domain OCT was performed in all patients using a Spectralis OCT device, and the macular thickness and volume of each of the early treatment diabetic retinopathy study (ETDRS) subfields were analysed.

Results: Ninety-four children were enrolled. Read More

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http://dx.doi.org/10.1007/s10792-019-01085-wDOI Listing
February 2019

[Astigmatism].

Ophthalmologe 2019 Feb 19. Epub 2019 Feb 19.

Univ.-Augenklinik Düsseldorf, Heinrich-Heine-Universität, Moorenstr. 5, 40225, Düsseldorf, Deutschland.

Astigmatism is the most frequent refractive error worldwide followed by hyperopia and myopia. Internal astigmatism has to be differentiated from external astigmatism. Furthermore, external astigmatism can be divided into "with the rule", "against the rule" and "oblique". Read More

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http://dx.doi.org/10.1007/s00347-019-0865-7DOI Listing
February 2019

Air-like plasmonics with ultralow-refractive-index silica aerogels.

Sci Rep 2019 Feb 19;9(1):2265. Epub 2019 Feb 19.

School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.

The coupling of the surface plasmon near-field into the sensing medium is key to the sensitivity of surface plasmon-based sensing devices. A low-index dielectric is necessary for the sensing medium to support a highly-penetrating surface plasmon evanescent field that extends well into the dielectric medium. The air-like refractive index, n, of an aerogel substrate provides another dimension for ultralow-index plasmonic devices. Read More

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http://www.nature.com/articles/s41598-019-38859-2
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http://dx.doi.org/10.1038/s41598-019-38859-2DOI Listing
February 2019
1 Read

Single gold-bridged nanoprobes for identification of single point DNA mutations.

Nat Commun 2019 Feb 19;10(1):836. Epub 2019 Feb 19.

Department of Chemical & Biological Engineering, Korea University, Seoul, 136713, Republic of Korea.

Consensus ranking of protein affinity to identify point mutations has not been established. Therefore, analytical techniques that can detect subtle variations without interfering with native biomolecular interactions are required. Here we report a rapid method to identify point mutations by a single nanoparticle sensing system. Read More

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http://dx.doi.org/10.1038/s41467-019-08769-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6381086PMC
February 2019

Prevalence of amblyopia and strabismus in Hani school children in rural southwest China: a cross-sectional study.

BMJ Open 2019 Feb 19;9(2):e025441. Epub 2019 Feb 19.

Department of Ophthalmology, The First Affiliated Hospital with Nanjing Medical University, Nanjing, China.

Purpose: To determine the prevalence rate of amblyopia and strabismus in Chinese Hani ethnic school-aged children.

Methods: All grade 1 and grade 7 students in Mojiang Hani Autonomous County, located in southwest China, were invited for comprehensive eye examinations performed by experienced ophthalmologists and optometrists, including visual acuity, ocular alignment and movements, cycloplegic autorefraction, anterior segment and fundus examinations. Standard definitions of amblyopia and strabismus were applied to calculate their prevalence rate. Read More

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http://dx.doi.org/10.1136/bmjopen-2018-025441DOI Listing
February 2019

Multifunctional ZnO NPs-chitosan-gallic acid hybrid nanocoating to overcome contact lenses associated conditions and discomfort.

J Colloid Interface Sci 2019 Feb 13;543:114-121. Epub 2019 Feb 13.

Grup de Biotecnologia Molecular i Industrial, Department of Chemical Engineering, Universitat Politècnica de Catalunya, Rambla Sant Nebridi 22, 08222 Terrasa, Spain. Electronic address:

Contact lenses (CL) provide visual correction but their use may also induce several adverse effects causative of discomfort and conditions that lead to stop or discontinue their use. Discomfort is mainly caused by insufficient wetting, impairment of the antioxidant defence system and eye infections. The current work reports on a single step sonochemical coating of CL with ZnO nanoparticles (NPs), chitosan (CS) and gallic acid (GA). Read More

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http://dx.doi.org/10.1016/j.jcis.2019.02.043DOI Listing
February 2019

First Report of Leaf Spot Caused by a Cercosporella sp. on Acroptilon repens in the United States.

Plant Dis 2006 Jun;90(6):833

Montana State University, Bozeman 59717.

In August 2005, leaf spots were observed on a sample of Acroptilon repens (L.) DC. (Russian knapweed [RK]) collected at the Charles M. Read More

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http://dx.doi.org/10.1094/PD-90-0833BDOI Listing

First Report of the Pale Cyst Nematode, Globodera pallida, in the United States.

Plant Dis 2007 Mar;91(3):325

Nematology Laboratory, USDA-ARS, Beltsville Agricultural Research Center, Beltsville, MD 20705.

In 2006, a cyst nematode was discovered in tare dirt at a potato (Solanum tuberosum) processing facility in eastern Idaho. The nematode was found during a routine survey conducted jointly by the Idaho State Department of Agriculture and the USDA Animal and Plant Health Inspection Service through the Cooperative Agricultural Pest Survey program. Extensive additional sampling from two suspect fields led to the identification of the same nematode in a 45-acre (18. Read More

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http://dx.doi.org/10.1094/PDIS-91-3-0325BDOI Listing

First Report of Puccinia lagenophorae on Common Groundsel (Senecio vulgaris) in Canada.

Plant Dis 2007 Aug;91(8):1058

Edmonton, Alberta, Canada T6R 2V7.

Rust disease on common groundsel was independently collected from two backyard gardens in Alberta, Canada during 2005, the first on September 11 in Sherwood Park (53.542°N, 113.262°W) and the second on September 18 in Edmonton (53. Read More

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http://dx.doi.org/10.1094/PDIS-91-8-1058CDOI Listing

Hollow Fiber Coupler Sensor.

Sensors (Basel) 2019 Feb 16;19(4). Epub 2019 Feb 16.

Department of Electrical and Computer Engineering, University of Victoria, Victoria, BC V8P 5C2, Canada.

We present a bi-conical optical directional coupler composed of solid and hollow core fibers. Through an evanescent wave coupling mechanism, the detection of liquid refractive index and its temperature are demonstrated. The experimental results illustrated that the sensor offers a sensitivity of 4. Read More

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http://dx.doi.org/10.3390/s19040806DOI Listing
February 2019

Fano Resonance in an Asymmetric MIM Waveguide Structure and Its Application in a Refractive Index Nanosensor.

Sensors (Basel) 2019 Feb 15;19(4). Epub 2019 Feb 15.

Science and Technology on Electronic Test & Measurement Laboratory, North University of China, No. 3 Xueyuan Road, Taiyuan 030051, China.

Herein, the design for a tunable plasmonic refractive index nanosensor is presented. The sensor is composed of a metal⁻insulator⁻metal waveguide with a baffle and a circular split-ring resonator cavity. Analysis of transmission characteristics of the sensor structures was performed using the finite element method, and the influence of the structure parameters on the sensing characteristics of the sensor is studied in detail. Read More

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http://dx.doi.org/10.3390/s19040791DOI Listing
February 2019

[THE ISRAELI INHERITED RETINAL DISEASES CONSORTIUM (IIRDC)- CLINICAL-GENETIC MAPPING AND FUTURE PERSPECTIVES].

Harefuah 2019 Feb;158(2):91-95

Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa.

Introduction: The sense of vision is highly important for humans and its loss markedly affects function and quality of life. Many inherited retinal diseases (IRDs) cause visual loss due to dysfunction or progressive degeneration of photoreceptor cells. These diseases show clinical and genetic heterogeneity. Read More

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February 2019
4 Reads

Nanoplasmonic Sensor Detects Preferential Binding of IRSp53 to Negative Membrane Curvature.

Front Chem 2019 4;7. Epub 2019 Feb 4.

Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Göteborg, Sweden.

Biosensors based on plasmonic nanostructures are widely used in various applications and benefit from numerous operational advantages. One type of application where nanostructured sensors provide unique value in comparison with, for instance, conventional surface plasmon resonance, is investigations of the influence of nanoscale geometry on biomolecular binding events. In this study, we show that plasmonic "nanowells" conformally coated with a continuous lipid bilayer can be used to detect the preferential binding of the insulin receptor tyrosine kinase substrate protein (IRSp53) I-BAR domain to regions of negative surface curvature, i. Read More

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http://dx.doi.org/10.3389/fchem.2019.00001DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6369594PMC
February 2019

Unilateral corneal edema in young: A diagnostic dilemma.

Indian J Ophthalmol 2019 Mar;67(3):442

Department of Cornea, Refractive Surgery and Ocular Surface Disorders, Dr. Shroff's Charity Eye Hospital, 5027, Kedarnath Road, Daryaganj, New Delhi, India.

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http://dx.doi.org/10.4103/ijo.IJO_1895_18DOI Listing

Prevalence of ocular morbidity among tribal children in Jawadhi hills, southern India: A cross-sectional study.

Indian J Ophthalmol 2019 Mar;67(3):386-390

Department of Ophthalmology, Schell Eye Hospital, Christian Medical College, Vellore, Tamil Nadu, India.

Purpose: Childhood blindness is second to cataract in terms of blind person years; population-based prevalence of ocular morbidity among tribal children has not been studied. We conducted this study to determine the prevalence of ocular morbidity in tribal children age 15 years or younger in Jawadhi hills, southern India.

Methods: A population-based cross-sectional study was conducted in four tribal villages where all children below 15 years of age were invited to participate in the study. Read More

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http://dx.doi.org/10.4103/ijo.IJO_795_18DOI Listing

Commentary on: Practice pattern of cataract surgeons when operating on seropositive patients.

Indian J Ophthalmol 2019 Mar;67(3):339-340

Department of Cornea, Cataract and Refractive, Centre for Sight Hospital, Safdarjung Enclave, New Delhi, India.

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http://dx.doi.org/10.4103/ijo.IJO_46_19DOI Listing
March 2019
1 Read

Ecofriendly and Efficient Luminescent Solar Concentrators Based on Fluorescent Proteins.

ACS Appl Mater Interfaces 2019 Feb 22. Epub 2019 Feb 22.

In recent years, luminescent solar concentrators (LSCs) have received renewed attention as a versatile platform for large-area, high-efficiency, and low-cost solar energy harvesting. So far, artificial or engineered optical materials, such as rare-earth ions, organic dyes, and colloidal quantum dots (QDs) have been incorporated into LSCs. Incorporation of nontoxic materials into efficient device architectures is critical for environmental sustainability and clean energy production. Read More

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http://dx.doi.org/10.1021/acsami.9b00147DOI Listing
February 2019
1 Read

An ultranarrow SPR linewidth in the UV region for plasmonic sensing.

Nanoscale 2019 Feb 18. Epub 2019 Feb 18.

Department of Physics, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Jiujiang Research Institute, Xiamen University, Xiamen, Fujian 361005, P. R. China.

Conventional surface plasmon resonance (SPR) modes based on gold and silver nanostructures only operate in the visible and near-infrared (NIR) regions. Nowadays, with the rapid development of strong coupling between molecules and plasmonic nanostructures and surface enhanced spectroscopy, it is highly desired to modulate the SPR modes with a narrow linewidth toward the ultraviolet (UV) wavelength region through a low cost and reproducible fabrication method. Herein, laser interference lithography is utilized to manufacture stable Al plasmonic arrays with well-controlled and tunable geometries. Read More

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http://dx.doi.org/10.1039/c8nr09703hDOI Listing
February 2019

The use of patient-reported outcome research in modern ophthalmology: impact on clinical trials and routine clinical practice.

Patient Relat Outcome Meas 2019 24;10:9-24. Epub 2019 Jan 24.

Centre for Patient Reported Outcomes Research and NIHR Birmingham Biomedical Research Centre, University of Birmingham, Edgbaston, Birmingham, UK,

This review article considers the rising demand for patient-reported outcome measures (PROMs) in modern ophthalmic research and clinical practice. We review what PROMs are, how they are developed and chosen for use, and how their quality can be critically appraised. We outline the progress made to develop PROMs in each clinical subspecialty. Read More

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http://dx.doi.org/10.2147/PROM.S162802DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6352858PMC
January 2019

Surgical experience with a redesigned, fully preloaded, hydrophobic acrylic intraocular lens in challenging cases of pseudoexfoliation syndrome, phacodonesis, and small pupils.

Clin Ophthalmol 2019 22;13:199-206. Epub 2019 Jan 22.

Borkenstein & Borkenstein, Privatklinik der Kreuzschwestern Graz, Graz, Austria,

Purpose: The purpose of this study was to describe our surgical experience and evaluate safety and postoperative outcomes of a fully preloaded, monofocal, hydrophobic acrylic intraocular lens (IOL) (CT LUCIA 611P) with a newly designed optic-haptic junction in severe cases of pseudoexfoliation (PXF) syndrome, phacodonesis, and small pupils.

Setting: This study was conducted in Borkenstein & Borkenstein, private practice, Privatklinik der Kreuzschwestern Graz, Austria.

Patients And Methods: This study presents outcomes of 15 eyes of 15 patients implanted with CT LUCIA 611P IOL with improved optical properties and more rigid and wider optic- haptic junction. Read More

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https://www.dovepress.com/surgical-experience-with-a-redesig
Publisher Site
http://dx.doi.org/10.2147/OPTH.S194420DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6348969PMC
January 2019
6 Reads

Stoichiometric Engineering of Chalcogenide Semiconductor Alloys for Nanophotonic Applications.

Adv Mater 2019 Feb 17:e1807083. Epub 2019 Feb 17.

Optoelectronics Research Centre and Centre for Photonic Metamaterials, University of Southampton, Southampton, SO17, 1BJ, UK.

A variety of alternative plasmonic and dielectric material platforms-among them nitrides, semiconductors, and conductive oxides-have come to prominence in recent years as means to address the shortcomings of noble metals (including Joule losses, cost, and passive character) in certain nanophotonic and optical-frequency metamaterial applications. Here, it is shown that chalcogenide semiconductor alloys offer a uniquely broad pallet of optical properties, complementary to those of existing material platforms, which can be controlled by stoichiometric design. Using combinatorial high-throughput techniques, the extraordinary epsilon-near-zero, plasmonic, and low/high-index characteristics of Bi:Sb:Te alloys are explored. Read More

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http://dx.doi.org/10.1002/adma.201807083DOI Listing
February 2019

[The role of caveolae in cataractogenesis: examination of human lens epithelial cells].

Orv Hetil 2019 Feb;160(8):300-308

Szemészeti Klinika, Semmelweis Egyetem, Általános Orvostudományi Kar 1085 Budapest, Üllői út 26., 1085.

Inrtoduction: Caveolae are flask shaped with 50-100 nm size, non-clathrin associated invaginations of the plasmamembrane. The main membrane protein of the structures is caveolin-1. Caveolae play an important role in numerous cellular functions including vesicular transport and cell-cycle regulation, and create platforms for classical and alternative signaling pathways. Read More

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http://dx.doi.org/10.1556/650.2019.31313DOI Listing
February 2019

[From evidence to clinical practice: myopia control among children in refraction clinics].

Zhonghua Yan Ke Za Zhi 2019 Feb;55(2):89-92

Zhongshan Ophthalmic Center, Sun Yat-sen University, State Key Laboratory of Ophthalmology, Guangzhou 510060, China.

Over the past decade, breakthrough has been made on myopia progression control with a lot of evidence from clinical trials, but the effective clinical application of many of them remained immature. Though refraction clinics have been set up in many specialized hospitals offering spectacles to correct refractive error, there was few protocol or standard of treatment for reducing myopia progression. This commentary reviews the latest and essential publications and presents critical advice on applying the research findings to clinical practice. Read More

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http://dx.doi.org/10.3760/cma.j.issn.0412-4081.2019.02.003DOI Listing
February 2019
1 Read

[It is essential to diagnose and correct children's ametropia after cycloplegic refraction].

Authors:
R Y Chu J L Zhao

Zhonghua Yan Ke Za Zhi 2019 Feb;55(2):86-88

Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China.

It is essential to diagnose and assess children's ametropia after cycloplegic refraction. The use of cyclopentolate 1% eyedrops in children is safe and effective for cycloplegic refraction. An accurate prescription should be based on the actual eye position and accommodation, as well as cycloplegic refraction in children. Read More

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http://dx.doi.org/10.3760/cma.j.issn.0412-4081.2019.02.002DOI Listing
February 2019

Bilateral Epibulbar Pseudorheumatoid Nodulosis with a Review of Ocular Adnexal Palisading Granulomas.

Surv Ophthalmol 2019 Feb 14. Epub 2019 Feb 14.

Cornea and Refractive Surgery Service; Massachusetts Eye and Ear Infirmary and the Harvard Medical School, Boston, MA.

We describe the clinical, histopathologic and immunohistochemical characteristics of episcleral/conjunctival pseudorheumatoid nodulosis, a new granulomatous entity that belongs among a group of related lesions. Specifically, pseudorheumatoid nodulosis should be differentiated from solitary rheumatoid nodules, rheumatoid nodulosis, accelerated rheumatoid nodules and nodulosis, and solitary pseudorheumatoid nodules. A 53-year-old man presented with bilateral painless, large, faintly yellow-grey, partially immobile, solid, circumscribed and occasionally confluent episcleral nodules of several months' duration. Read More

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http://dx.doi.org/10.1016/j.survophthal.2019.02.002DOI Listing
February 2019

Regenerative Surgery of the Corneal Stroma for Advanced Keratoconus: One Year Outcomes.

Am J Ophthalmol 2019 Feb 14. Epub 2019 Feb 14.

Cell Engineering Laboratory, IdiPAZ, La Paz Hospital Research Institute, Madrid, Spain.

Purpose: To evaluate the one-year safety and efficacy of the cellular therapy of the corneal stroma by implanting autologous adipose derived adult stem cells (ADASc) with or without sheets of decellularized donor human corneal stroma within the stroma of patients with advanced keratoconus.

Methods: Prospective interventional non-randomized series of cases. Fourteen consecutive patients were selected and distributed into 3 experimental groups: A) Implantation of autologous ADASc alone (3x 10/1mL ) (n:5); B) Decellularized donor 120 μm thick corneal stroma lamina alone (n:5); C) Recellularized donor lamina with 1x10 autologous ADASc+ another 1x10/1mL cells at the time of the surgery (n:4). Read More

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http://dx.doi.org/10.1016/j.ajo.2019.02.009DOI Listing
February 2019

Peripheral refraction and spherical aberration profiles with single vision, bifocal and multifocal soft contact lenses.

J Optom 2019 Feb 13. Epub 2019 Feb 13.

Brien Holden Vision Institute, Sydney, NSW, Australia; School of Optometry and Vision Sciences, UNSW, Sydney, NSW, Australia. Electronic address:

Purpose: To compare the peripheral refraction and spherical aberration profiles along three visual field meridians of 16 commercial single vision (SV), bifocal (BF) and multifocal (MF) test contact lenses with a single vision control.

Method: Forty-four participants [24.2±2. Read More

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http://dx.doi.org/10.1016/j.optom.2018.11.002DOI Listing
February 2019

Refractive correction with multifocal intraocular lenses after radial keratotomy.

Eye (Lond) 2019 Feb 15. Epub 2019 Feb 15.

Optics and Optometry and Vision Sciences Department, Faculty of Physics, University of Valencia, Valencia, Spain.

Purpose: To assess visual and refractive results of multifocal intraocular lens (IOLs) implantation for refractive correction after radial keratotomy (RK).

Methods: In a retrospective non-comparative interventional case series, we analyzed the outcomes of multifocal IOL implantation performed in the context of cataract or refractive lens exchange surgery following RK. A total of 17 eyes from nine patients were included in the study. Read More

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http://dx.doi.org/10.1038/s41433-019-0364-8DOI Listing
February 2019
1 Read

[A Simplifed Model Eye for Testing Fundus Imaging Device].

Zhongguo Yi Liao Qi Xie Za Zhi 2019 Jan;43(1):21-24

Zhejiang Institute of Medical Device Testing, Hangzhou, 310018.

Based on the Gullstrand I model eye, a simplified model eye for testing fundus imaging device is designed. The model eye can reach the following requirements:(1) The refractive characteristics of the ocular refractive tissue are simulated, and the equivalent focal length in air is 17 mm; (2) The differences between relative refractive index differences of the adjacent materials of the simplified model eye and relative refractive index differences of any adjacent two layers (cornea and aqueous humor, aqueous humor and lens, lens and vitreous body) of the Gullstrand I model eye are not more than 1%; (3) In the case of the incident aperture diameter of 3 mm, the differences of radii of the diffuse spots formed by the paraxial light and the axial light are not more than 15%; (4) The differences of angles of chief ray and tangent line of the fundus are not more than 1°; (5) In the case of the incident aperture diameter of 3 mm, the differences of MTF values of the near axis light are not more than 0.1. Read More

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http://dx.doi.org/10.3969/j.issn.1671-7104.2019.01.006DOI Listing
January 2019

Prevalence and risk factors of myopic maculopathy in rural southern China: the Yangxi Eye Study.

Br J Ophthalmol 2019 Feb 15. Epub 2019 Feb 15.

State Key Laboratory of Ophthalmology, Sun Yat-Sen University Zhongshan Ophthalmic Center, Guangzhou, China

Aims: To evaluate the prevalence of myopic maculopathy among participants aged 50 years and older in rural southern China.

Methods: Population-based, cross-sectional study. Subjects were recruited using cluster sampling from Yangxi County, Guangdong Province, China from August to November in 2014. Read More

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http://dx.doi.org/10.1136/bjophthalmol-2018-313057DOI Listing
February 2019

Design of a multi-analyte resonant photonic platform for label-free biosensing.

Nanotechnology 2019 Feb 15. Epub 2019 Feb 15.

Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, 710049, P. R. China, Xi'an, CHINA.

We have designed a multi-analyte biosensing platform based on a hybrid whispering gallery mode resonator to detect protein biomarkers, e.g. those allowing the early diagnosis of Alzheimer's disease. Read More

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http://dx.doi.org/10.1088/1361-6528/ab0771DOI Listing
February 2019

Deep Anterior Lamellar Keratoplasty in Eyes With Intrastromal Corneal Ring Segments.

Cornea 2019 Feb 12. Epub 2019 Feb 12.

Department of Ophthalmology, Ospedali Privati Forlì, Forlì, Italy.

Purpose: To evaluate the possibility of using the intrastromal corneal ring segments (ICRSs) previously implanted as a depth reference for performing pneumatic dissection in deep anterior lamellar keratoplasty (DALK).

Methods: The depth of placement of 2 symmetrical ICRSs placed in the superior and inferior midperipheral cornea of 4 eyes of 4 patients with keratoconus was measured by means of anterior segment optical coherence tomography. Because of irregular and/or high astigmatism, DALK using pneumatic dissection was performed in all eyes. Read More

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http://dx.doi.org/10.1097/ICO.0000000000001906DOI Listing
February 2019

Influence of optics vibration on synchrotron beam coherence.

Opt Lett 2019 Feb;44(4):899-902

Vibration of optics is one of the major limiting factors of the performance of state-of-the-art beamlines at low-emittance synchrotron facilities. We present a theoretical model with experimental data describing vibration-induced effects on x-ray beam coherence. Owing to the incoherent nature of vibration, the decrease in the beam spatial coherence perturbed by optics vibrations can be characterized by modeling the effective source profile of the vibrating beam. Read More

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http://dx.doi.org/10.1364/OL.44.000899DOI Listing
February 2019

In-line reflective Mach-Zehnder interferometer based on a tilted in-fiber beam splitter.

Authors:
Hua Zhang D N Wang

Opt Lett 2019 Feb;44(4):803-806

A fiber in-line reflective Mach-Zehnder interferometer is proposed and experimentally demonstrated, which is based on a tilted in-fiber beam splitter inscribed by a femtosecond laser. The beam splitter splits the incident light beam into two parts; one is directed to the fiber cladding-air interface, where it experiences total internal reflection and is directed to the fiber core. The other part of the light beam keeps traveling in the fiber core. Read More

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http://dx.doi.org/10.1364/OL.44.000803DOI Listing
February 2019

Separation, Characterization and Discriminant Analysis of Subvisible Particles in Biologics Formulations.

Curr Pharm Biotechnol 2019 Feb 13. Epub 2019 Feb 13.

BMS Research & Development, GRS&B, Princeton, New Jersey 08543. United States.

The presence of subvisible particles (SVPs) in parenteral formulations of biologics is a major challenge in the development of therapeutic protein formulations. Distinction between proteinaceous and non-proteinaceous SVPs is vital in monitoring formulation stability. The current compendial method based on light obscuration (LO) has limitations in the analysis of translucent/low refractive index particles. Read More

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http://dx.doi.org/10.2174/1389201020666190214100840DOI Listing
February 2019

Novel ocular findings in oculodentodigital dysplasia (ODDD): a case report and literature review.

Ophthalmic Genet 2019 Feb 15:1-6. Epub 2019 Feb 15.

a State Key Laboratory of Ophthalmology , Zhongshan Ophthalmic Center, Sun Yat-Sen University , Guangzhou , Guangdong , China.

Background: Oculodentodigitaldysplasia (ODDD; MIM no. 164200) is a rare hereditary disorder caused by mutations in the gene GJA1.Ocular disorders included microcornea, cornea opacity and glaucoma. Read More

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http://dx.doi.org/10.1080/13816810.2019.1571616DOI Listing
February 2019

Expansion Light Sheet Microscopy Resolves Subcellular Structures in Large Portions of the Songbird Brain.

Front Neuroanat 2019 31;13. Epub 2019 Jan 31.

Institute of Neuroinformatics, University of Zürich/ETH Zürich, Zurich, Switzerland.

Expansion microscopy and light sheet imaging (ExLSM) provide a viable alternative to existing tissue clearing and large volume imaging approaches. The analysis of intact volumes of brain tissue presents a distinct challenge in neuroscience. Recent advances in tissue clearing and light sheet microscopy have re-addressed this challenge and blossomed into a plethora of protocols with diverse advantages and disadvantages. Read More

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http://dx.doi.org/10.3389/fnana.2019.00002DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365838PMC
January 2019

Unilateral Congenital Nasolacrimal Duct Obstruction, Is It An Amblyogenic Factor?

Middle East Afr J Ophthalmol 2018 Jul-Dec;25(3-4):156-160

Research Department, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia.

Background/aims: To evaluate the refractive status, axial length, and prevalence of amblyopia among Saudi children with unilateral congenital nasolacrimal duct obstruction (UCNLDO) compared to the unaffected fellow eye.

Methods: A retrospective chart review was performed for children with UCNLDO at two eye institutes in Eastern Saudi Arabia from 2009 to 2015. The outcomes of syringing determined UNCLDO. Read More

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http://www.meajo.org/text.asp?2018/25/3/156/249327
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http://dx.doi.org/10.4103/meajo.MEAJO_3_17DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6348941PMC
February 2019
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Optimization of Transparent Organic Light-Emitting Diodes by Simulation-Based Design of Organic Capping Layers.

J Nanosci Nanotechnol 2019 Jul;19(7):3959-3963

Compound Semiconductor Technology, RWTH Aachen University, Sommerfeldstr. 18, 52074 Aachen, Germany.

In this work, we use the transfer matrix method to optimize TPBi capping layers deposited on organic light emitting diodes with respect to light extraction and transmittance. The green transparent organic light emitting diodes comprise three organic semiconductors (CBP, Ir(ppy)₃ and TPBi) forming an efficient simplified phosphorescent organic light emitting diode stack. A transparent cathode of 2 nm Cs₂CO₃, 2 nm Al and 16 nm Au is deposited by thermal evaporation. Read More

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http://dx.doi.org/10.1166/jnn.2019.16306DOI Listing

Visual Performance, Subjective Satisfaction and Quality of Life Effect of a New Refractive Intraocular Lens with Central Extended Depth of Focus.

Klin Monbl Augenheilkd 2019 Feb 14. Epub 2019 Feb 14.

Glaucoma Research Centre, Montchoisi Clinic, Swiss Visio Network, Lausanne, Switzerland.

Purpose: To assess the visual performance, clinical and quality of life outcomes, and subjective patient satisfaction after implantation of a new refractive/extended depth of focus (EDOF) hybrid intraocular lens (IOL).

Methods: This is a monocentric, retrospective study of 29 patients (45 eyes), carried out in a tertiary care glaucoma research centre. All patients underwent implantation of a Lucidis (Swiss Advanced Vision, SAV-IOL SA, Neuchâtel, Switzerland) IOL during cataract surgery. Read More

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http://dx.doi.org/10.1055/a-0799-9700DOI Listing
February 2019

"Numbers sometimes lie"- refractive surprise following IOL mislabeling by the manufacturer.

Eye (Lond) 2019 Feb 13. Epub 2019 Feb 13.

Department of Ophthalmology, General Hospital Klagenfurt, Klagenfurt, Austria.

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http://dx.doi.org/10.1038/s41433-019-0367-5DOI Listing
February 2019

Lab-on-Fiber Nanoprobe with Dual High-Q Rayleigh Anomaly-Surface Plasmon Polariton Resonances for Multiparameter Sensing.

Sci Rep 2019 Feb 13;9(1):1922. Epub 2019 Feb 13.

Department of Mechanical Engineering, University of Maryland, College Park, Maryland, 20742, USA.

Surface plasmon resonance (SPR) based sensing is an attractive approach for realizing lab-on-fiber nanoprobes. However, simultaneous measurement of multiple parameters (e.g. Read More

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http://dx.doi.org/10.1038/s41598-018-38113-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6374433PMC
February 2019

Efficient metal halide perovskite light-emitting diodes with significantly improved light extraction on nanophotonic substrates.

Nat Commun 2019 Feb 13;10(1):727. Epub 2019 Feb 13.

Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China.

Metal halide perovskite has emerged as a promising material for light-emitting diodes. In the past, the performance of devices has been improved mainly by optimizing the active and charge injection layers. However, the large refractive index difference among different materials limits the overall light extraction. Read More

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http://dx.doi.org/10.1038/s41467-019-08561-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6374404PMC
February 2019

Preparation, Characterization and in vivo Antiinflammatory Studies of Ostrich Oil Based Nanoemulsion.

J Oleo Sci 2019 Feb 13. Epub 2019 Feb 13.

Department of Pharmaceutics, College of Pharmacy Prince Sattam Bin Abdulaziz University.

Ostrich oil, a natural bird fat oil, has significant biological activities in preventing various pains and inflammation. The aim of the current study was to develop ostrich oil loaded nanoemulsions to check the anti-inflammatory efficacy. The developed nanoemulsions(F1-F3) were evaluated in vitro for various physicochemical parameters including thermodynamic stability, nanoemulsifying potential, mean droplet size, polydispersity index (PDI), zeta potential (ZP), viscosity (η), refractive index (RI) and transmittance (%T). Read More

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http://dx.doi.org/10.5650/jos.ess18213DOI Listing
February 2019

Low dose radiation regulates BRAF-induced thyroid cellular dysfunction and transformation.

Cell Commun Signal 2019 Feb 13;17(1):12. Epub 2019 Feb 13.

Department of Life Science, Research Institute for Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea.

Background: The existence of differentiated thyroid cells is critical to respond radioactive iodide treatment strategy in thyroid cancer, and loss of the differentiated phenotype is a trademark of iodide-refractive thyroid disease. While high-dose therapy has been beneficial to several cancer patients, many studies have indicated this clinical benefit was limited to patients having BRAF mutation. BRAF-targeted paired box gene-8 (PAX8), a thyroid-specific transcription factor, generally dysregulated in BRAF-mutated thyroid cancer. Read More

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http://dx.doi.org/10.1186/s12964-019-0322-xDOI Listing
February 2019
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Novel dynamic corneal response parameters in a practice use: a critical review.

Biomed Eng Online 2019 Feb 13;18(1):17. Epub 2019 Feb 13.

Department of Biomedical Computer Systems, Faculty of Computer Science and Materials Science, Institute of Computer Science, University of Silesia, ul. Będzińska 39, 41-200, Sosnowiec, Poland.

Background: Non-contact tonometers based on the method using air puff and Scheimpflug's fast camera are one of the latest devices allowing the measurement of intraocular pressure and additional biomechanical parameters of the cornea. Biomechanical features significantly affect changes in intraocular pressure values, as well as their changes, may indicate the possibility of corneal ectasia. This work presents the latest and already known biomechanical parameters available in the new offered software. Read More

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http://dx.doi.org/10.1186/s12938-019-0636-3DOI Listing
February 2019

Optical Properties of Oxidized Plasma-Polymerized Organosilicones and Their Correlation with Mechanical and Chemical Parameters.

Materials (Basel) 2019 Feb 12;12(3). Epub 2019 Feb 12.

Institute of Materials Chemistry, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic.

Pure tetravinylsilane and its oxygen mixture were used to deposit oxidized plasma polymer films at various effective power (0.1⁻10 W) and various oxygen fractions (0⁻0.71) using RF pulsed plasma. Read More

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http://dx.doi.org/10.3390/ma12030539DOI Listing
February 2019

Comparing habitual and i. Scription refractions.

BMC Ophthalmol 2019 Feb 12;19(1):49. Epub 2019 Feb 12.

Midwestern University, College of Optometry, 19555 N 59th Ave, Glendale, Arizona, 85308, USA.

Background: Many patients voice concerns regarding poor night vision, even when they see 20/20 or better in the exam room. During mesopic and scotopic conditions the pupil size increases, increasing the effects on visual performance of uncorrected (residual) refractive errors. The i. Read More

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http://dx.doi.org/10.1186/s12886-019-1053-xDOI Listing
February 2019

Choroid thickness profile in patients with lupus nephritis.

Lupus 2019 Feb 12:961203319828525. Epub 2019 Feb 12.

1 Centro Hospitalar de Vila Nova de Gaia Espinho, Vila Nova de Gaia, Portugal.

Background: Choroidopathy is a rare manifestation of systemic lupus erythematosus (SLE). This entity is associated with active phases of severe SLE and it is frequently accompanied by acute kidney failure, central nervous system involvement and coagulopathy.

Purpose: To evaluate the choroid thickness of patients with lupus nephritis (LN) without choroidopathy, and to compare this with that of age-matched SLE patients without LN and healthy control subjects. Read More

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http://dx.doi.org/10.1177/0961203319828525DOI Listing
February 2019
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