keyword
MENU ▼
Read by QxMD icon Read
search

Lens

keyword
https://www.readbyqxmd.com/read/28634042/routine-ultrasound-quality-assurance-in-a-multi-unit-radiology-department-a-retrospective-evaluation-of-transducer-failures
#1
Anne-Mari Vitikainen, Juha I Peltonen, Eija Vartiainen
The importance of quality assurance (QA) in medical ultrasound (US) has been widely recognized and recommendations concerning technical QA have been published over the years. However, the demonstrated impact of a properly working QA protocol on clinical routine has been scarce. We investigated the transducer write-off causes for a 5-y period in a multi-unit radiology department with an annual average of 230 transducers in demanding diagnostic use. The transducer faults and the initial observers of the faults leading to transducer write-offs were traced and categorized...
June 17, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28633591/approaches-in-topical-ocular-drug-delivery-and-developments-in-the-use-of-contact-lenses-as-drug-delivery-devices
#2
Prina Mehta, Rita Haj-Ahmad, Ali Al-Kinani, Muhammad Sohail Arshad, Ming-Wei Chang, Raid G Alany, Zeeshan Ahmad
Drug-delivery approaches have diversified over the last two decades with the emergence of nanotechnologies, smart polymeric systems and multimodal functionalities. The intended target for specific treatment of disease is the key defining developing parameter. One such area which has undergone significant advancements relates to ocular delivery. This has been expedited by the development of material advancement, mechanistic concepts and through the deployment of advanced process technologies. This review will focus on the developments within lens-based drug delivery while touching on conventional and current methods of topical ocular drug delivery...
July 2017: Therapeutic Delivery
https://www.readbyqxmd.com/read/28633137/incidence-and-characteristics-of-congenital-cataract-surgery-in-france-from-2010-to-2012-the-episafe-program
#3
Vincent Daien, Annick Le Pape, Didier Heve, Max Villain, Dominique Bremond Gignac
INTRODUCTION: Prevention of visual impairment due to congenital cataract is an international priority as part of VISION 2020 - The Right to Sight, the joint initiative of the World Health Organization and the International Agency for the Prevention of Blindness. The present study is part of the Epidemiology and Safety (EPISAFE) collaborative program aiming at assessing the epidemiology and safety of interventions in ophthalmology. METHODS: All children who underwent cataract surgery before the age of 1 year in France between January 2010 and December 2012 were identified by using the Programme de Médicalisation des Systèmes d'Information...
June 20, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28633136/malaria-fever-therapy-for-general-paralysis-of-the-insane-a-historical-cohort-study
#4
Ingrid M Daey Ouwens, C Elisabeth Lens, Aernoud T L Fiolet, Alewijn Ott, Peter J Koehler, Piet A Kager, Willem M A Verhoeven
BACKGROUND/AIMS: This year marks the 100th anniversary of the first malaria fever treatment (MFT) given to patients with general paralysis of the insane (GPI) by the Austrian psychiatrist and later Nobel laureate, Julius Wagner-Jauregg. In 1921 Wagner-Jauregg reported an impressive therapeutic success of MFT and it became the standard treatment for GPI worldwide. In this study, MFT practice in the Dutch Vincent van Gogh psychiatric hospital in GPI patients who had been admitted in the period 1924-1954 is explored...
June 21, 2017: European Neurology
https://www.readbyqxmd.com/read/28632845/iris-malformation-and-anterior-segment-dysgenesis-in-mice-and-humans-with-a-mutation-in-pi-3-kinase
#5
Marie H Solheim, Allen C Clermont, Jonathon N Winnay, Erlend Hallstensen, Anders Molven, Pål R Njølstad, Eyvind Rødahl, C Ronald Kahn
Purpose: To determine the ocular consequences of a dominant-negative mutation in the p85α subunit of phosphatidylinositol 3-kinase (PIK3R1) using a knock-in mouse model of SHORT syndrome, a syndrome associated with short stature, lipodystrophy, diabetes, and Rieger anomaly in humans. Methods: We investigated knock-in mice heterozygous for the SHORT syndrome mutation changing arginine 649 to tryptophan in p85α (PIK3R1) using physical examination, optical coherence tomography (OCT), tonometry, and histopathologic sections from paraffin-embedded eyes, and compared the findings to similar investigations in two human subjects with SHORT syndrome heterozygous for the same mutation...
June 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28632597/leadership-communication-and-negotiation-across-a-diverse-workforce-an-aoa-critical-issues-symposium
#6
Denis R Clohisy, Michael J Yaszemski, Joanne Lipman
The current workforce in the United States is rapidly changing and is increasingly inclusive of individuals from a broad range of ages, ethnicities, and cultural backgrounds. Engaging and leading a diverse workforce creates great opportunities for innovation and adaptation in our evolving medical economic and clinical care delivery environment. For optimal engagement of employees and partners, orthopaedic surgeons must develop the necessary skills for executing change inside complex organizations and across teams composed of a variety of providers and skilled workers...
June 21, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28632093/allergic-contact-dermatitis-from-ophthalmics
#7
Yue Zheng, Paru R Chaudhari, Howard I Maibach
In this article we summarize the recently described allergens responsible for allergic contact dermatitis due to ophthalmic drugs and contact lens solutions, and emphaage the need on how to perform diagnostic testing in this special clinical entity.
March 6, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28632030/ultraviolet-b-radiation-stimulates-the-interaction-between-nuclear-factor-of-activated-t-cells-5-nfat5-and-nuclear-factor-kappa-b-nf-%C3%AE%C2%BAb-in-human-lens-epithelial-cells
#8
Inyoung Chung, Young-Sool Hah, SunMi Ju, Ji-Hye Kim, Woong-Sun Yoo, Hee-Young Cho, Ji-Myong Yoo, Seong-Wook Seo, Wan-Sung Choi, Seong-Jae Kim
PURPOSE: Nuclear factor-kappa B (NF-κB) has been proposed as a therapeutic target for the treatment of cataracts. The authors investigated the relationship between nuclear factor of activated T cells 5 (NFAT5) and NF-κB in ultraviolet B (UVB)-irradiated human lens epithelial (HLE) cells. METHODS: Human lens epithelial B-3 (HLE-B3) cells were exposed to UVB light at a dose of 10 mJ/cm(2) and then incubated for 24 h. Cell viability was assessed by using the Cell Counting Kit-8 (CCK-8) assay...
February 26, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28631620/effectiveness-of-pelvic-lead-blanket-to-reduce-the-doses-to-eye-lens-and-hands-of-interventional-cardiologists-and-assistant-nurses
#9
Włodzimierz Grabowicz, Joanna Karolina Domienik-Andrzejewska, Konrad Masiarek, Tomasz Górnik, Tomasz Grycewicz, Marcin Brodecki, Andrzej Lubiński
The aim of the present study is to analyse quantitatively the potential reduction of the doses to eye lens and the hands of an operator and a nurse by the pelvic lead blanket during coronary angiography (CA) and percutaneous transluminal coronary angioplasty (PTCA) procedures. Thermoluminescent dosimeters (TLDs) were used to assess dose levels to left eye lens and left and right fingers of both physician and nurses during single procedures performed with or without lead blanket. The measurements were carried out in one medical centre and include dosimetric data from100 procedures...
June 20, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28631430/internal-cyclopexy-for-complicated-traumatic-cyclodialysis-cleft
#10
Cong Wang, Xiao-Yan Peng, Qi-Sheng You, Yi Liu, Xiu-Qin Pang, Peng-Fei Zheng, Jost B Jonas
PURPOSE: To assess the surgical and functional outcome of internal direct cyclopexy as therapy of complicated traumatic cyclodialysis. METHODS: The single-centre interventional case-series study included eyes with traumatic cyclodialysis who had consecutively been treated. Internal cyclopexy was performed using double-armed sutures introduced into the eye through the pars plana opposite to the cyclodialysis cleft and which were laid parallel to limbus. Additional procedures included cataract surgery, and pars plana vitrectomy...
June 20, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28630786/ophthoselfie-detailed-self-imaging-of-cornea-and-anterior-segment-by-smartphone
#11
Abdullah Kaya
OBJECTIVES: To describe the ophthoselfie, a method by which everyone can take detailed self-images of the cornea and anterior segment with a smartphone. MATERIALS AND METHODS: A 90-diopter non-contact double aspheric lens was attached to posterior camera of the smartphone by clear tape. Images of one eye on the screen of the smartphone could be seen with the other eye in the mirror and images were taken. RESULTS: Accurate and detailed images of the cornea and anterior segment of the eye could be taken...
June 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28630681/imaging-optical-scattering-of-butterfly-wing-scales-with-a-microscope
#12
Jinxin Fu, Beom-Jin Yoon, Jung Ok Park, Mohan Srinivasarao
A new optical method is proposed to investigate the reflectance of structurally coloured objects, such as Morpho butterfly wing scales and cholesteric liquid crystals. Using a reflected-light microscope and a digital single-lens reflex (DSLR) camera, we have successfully measured the two-dimensional reflection pattern of individual wing scales of Morpho butterflies. We demonstrate that this method enables us to measure the bidirectional reflectance distribution function (BRDF). The scattering image observed in the back focal plane of the objective is projected onto the camera sensor by inserting a Bertrand lens in the optical path of the microscope...
August 6, 2017: Interface Focus
https://www.readbyqxmd.com/read/28630553/australia-abortion-and-human-rights
#13
Ronli Sifris, Suzanne Belton
This article adopts a human rights lens to consider Australian law and practice regarding elective abortion. As such, it considers Australian laws within the context of the right to equality, right to privacy, right to health, and right to life. After setting out the human rights framework and noting the connected nature of many of the rights (and their corresponding violations), the article shifts its focus to analyzing Australian law and practice within the framework of these rights. It considers the importance of decriminalizing abortion and regulating it as a standard medical procedure...
June 2017: Health and Human Rights
https://www.readbyqxmd.com/read/28630442/ir-sensitivity-enhancement-of-cmos-image-sensor-with-diffractive-light-trapping-pixels
#14
Sozo Yokogawa, Itaru Oshiyama, Harumi Ikeda, Yoshiki Ebiko, Tomoyuki Hirano, Suguru Saito, Takashi Oinoue, Yoshiya Hagimoto, Hayato Iwamoto
We report on the IR sensitivity enhancement of back-illuminated CMOS Image Sensor (BI-CIS) with 2-dimensional diffractive inverted pyramid array structure (IPA) on crystalline silicon (c-Si) and deep trench isolation (DTI). FDTD simulations of semi-infinite thick c-Si having 2D IPAs on its surface whose pitches over 400 nm shows more than 30% improvement of light absorption at λ = 850 nm and the maximum enhancement of 43% with the 540 nm pitch at the wavelength is confirmed. A prototype BI-CIS sample with pixel size of 1...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28630333/boosting-cns-axon-regeneration-by-harnessing-antagonistic-effects-of-gsk3-activity
#15
Marco Leibinger, Anastasia Andreadaki, Renate Golla, Evgeny Levin, Alexander M Hilla, Heike Diekmann, Dietmar Fischer
Implications of GSK3 activity for axon regeneration are often inconsistent, if not controversial. Sustained GSK3 activity in GSK3(S/A) knock-in mice reportedly accelerates peripheral nerve regeneration via increased MAP1B phosphorylation and concomitantly reduces microtubule detyrosination. In contrast, the current study shows that lens injury-stimulated optic nerve regeneration was significantly compromised in these knock-in mice. Phosphorylation of MAP1B and CRMP2 was expectedly increased in retinal ganglion cell (RGC) axons upon enhanced GSK3 activity, but, surprisingly, no GSK3-mediated CRMP2 inhibition was detected in sciatic nerves, thus revealing a fundamental difference between central and peripheral axons...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28629391/anterior-lens-capsule-and-epithelium-thickness-measurements-using-spectral-domain-optical-coherence-tomography
#16
Jing Dong, Yading Jia, Yaqin Zhang, Haining Zhang, Zhijie Jia, Suhua Zhang, Qiang Wu, Qingmao Hu, Tianqiao Zhang, Xiaogang Wang
BACKGROUND: To investigate the anterior lens capsule and epithelium thickness (defined as anterior lens capsular complex: ALCC) in normal Chinese subjects using spectral-domian optical coherence tomography (SD-OCT) and examine the factors that may influence the ALCC, such as age, gender, pupil diameter (PD) and signal strength index (SSI). METHODS: A prospective observational case series. One-hundred-thirty-four normal subjects (134 eyes) were included. The ALCCs were determined manually via SD-OCT...
June 19, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28629349/relationships-between-dental-personnel-and-non-dental-primary-health-care-providers-in-rural-and-remote-queensland-australia-dental-perspectives
#17
Jackie Stuart, Ha Hoang, Len Crocombe, Tony Barnett
BACKGROUND: Collaboration between dental practitioners and non-dental primary care providers has the potential to improve oral health care for people in rural and remote communities, where access to oral health services is limited. However, there is limited research on collaboration between these professional disciplines. The purpose of this paper was to explore the relationships between dental practitioners and non-dental primary care providers from rural and remote areas of Queensland and to identify strategies that could improve collaboration between these disciplines from the perspective of dental participants...
June 19, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28629164/cataract-surgery-performed-by-high-frequency-ldv-z8-femtosecond-laser-safety-efficacy-and-its-physical-properties
#18
Bojan Pajic, Zeljka Cvejic, Brigitte Pajic-Eggspuehler
BACKGROUND: The aim of our study was to investigate the safety and efficacy of the LDV Z8 femtosecond laser in cataract surgery compared to the conventional procedure. METHODS: This prospective study was performed at the Swiss Eye Research Foundation, Eye Clinic ORASIS, Reinach, Switzerland. The study included 130 eyes from 130 patients: 68 treated with femtosecond laser-assisted cataract surgery (FLACS) using the FEMTO LDV Z8 and 62 treated with conventional phacoemulsification...
June 18, 2017: Sensors
https://www.readbyqxmd.com/read/28628489/shifting-of-the-line-of-sight-in-tilted-disk-syndrome
#19
Pinar Kosekahya, Ozge Sarac, Mustafa Koc, Mehtap Caglayan, Gozde Hondur, Nurullah Cagil
OBJECTIVES: To investigate the shifting of the line of sight (LoS) and the refractive, topographic, and aberrometric parameters that may be associated with the shifting of the LoS in eyes with tilted disk syndrome (TDS). METHODS: Eighty left eyes of 80 subjects with TDS (Study Group) and 70 left eyes of 70 subjects with myopia and astigmatism (Control Group) were included in this study. Line-of-sight coordinates on the horizontal (x) and vertical (y) axes, refractive, topographic, and aberrometric parameters were evaluated...
June 16, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28628342/effect-of-green-tea-polyphenol-epigallocatechin-3-gallate-on-the-aggregation-of-%C3%AE-a-66-80-peptide-a-major-fragment-of-%C3%AE-a-crystallin-involved-in-cataract-development
#20
Vijay Kumar, Shalini Gour, Ocan Simon Peter, Shraddha Gandhi, Pankaj Goyal, Janmejay Pandey, Ram Swaroop Harsolia, Jay Kant Yadav
PURPOSE: Crystallin is a major protein present in eye lens. Peptide fragment αA(66-80) derived from αA-crystallin possesses high aggregation propensity and forms amyloid-like structures. αA(66-80) aggregates are known to interact with soluble crystallins and destabilize native structures that subsequently undergo aggregation. Crystallin aggregation in eye lens leads to reduction in lens opacity, the condition generally referred to as a cataract. Thus, αA(66-80) aggregation appears to be an important event during cataract development, and therefore, inhibition of αA(66-80) aggregation may be an attractive strategy to intervene in cataract development...
June 19, 2017: Current Eye Research
keyword
keyword
55333
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"