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quality of vision

A Ferrero, J L Velázquez, A Pons, J Campos
The General V(λ) Mismatch Index, f1 ' , was defined for a general description of the photometric performance of photometers. This index is widely-used in photometry, and it is very relevant for selecting photometers for low-uncertainty photometric measurements. It quantifies the spectral mismatch between the relative spectral responsivity of a photometer and the luminous efficiency function for photopic vision, V(λ). The linear correlation between the real general photometric measurement error and f1 ' of 77 photometers was studied for four sets of light sources: R, G and B LEDs (narrowband spectral power distributions, SPDs), blackbodies at different colour temperatures (broadband SPDs), phosphor-based LEDs at different correlated color temperatures (SPDs with narrow- and broad-band features), and a mixture of blackbodies and phosphor-based LED sources...
July 9, 2018: Optics Express
Alexandra F Dalton, Corey Lyon, Bennett Parnes, Douglas Fernald, Carmen L Lewis
PURPOSE: The purpose of this project was to: (1) develop a strategy for primary care quality measurement using an environmental scan and interviews to identify best practices and candidate measures; (2) present recommendations to facilitate successful measurement. METHODS: Following stakeholder interviews and review of existing measures, we created a three-tiered recommendation system for selecting and implementing measures. We also developed a framework for reviewing and prioritizing measures and prepared a detailed project report...
August 14, 2018: Journal for Healthcare Quality: Official Publication of the National Association for Healthcare Quality
Edith Holloway, Bonnie Sturrock, Ecosse Lamoureux, Mark Hegel, Robin Casten, David Mellor, Gwyneth Rees
PURPOSE: To explore the feasibility and preliminary effectiveness of Problem-Solving Treatment for Primary Care (PST-PC) delivered by low-vision rehabilitation (LVR) practitioners to adult clients with depressive symptoms. DESIGN/METHOD: A single-group pre/postintervention study. Eighteen adult LVR clients with depressive symptoms (Patient Health Questionnaire-9 [PHQ-9] score of ≥5) received 6-8 weekly telephone sessions of PST-PC delivered by expertly trained practitioners (n = 14)...
August 2018: Rehabilitation Psychology
Roman Kislov, Paul M Wilson, Sarah Knowles, Ruth Boaden
BACKGROUND: Collaborations for Leadership in Applied Health Research and Care (CLAHRCs) were funded by NIHR in England in 2008 and 2014 as partnerships between universities and surrounding health service organisations, focused on improving the quality of healthcare through the conduct and application of applied health research. The aim of this review is to synthesise learning from evaluations of the CLAHRCs. METHODS: Fifteen databases including CINAHL, MEDLINE, EMBASE and PsycINFO were searched to identify any evaluations of CLAHRCs...
August 15, 2018: Implementation Science: IS
David Feeny, William Furlong, George W Torrance
BACKGROUND: Multi-attribute generic preference-based measures of health-related quality of life are used as comprehensive outcome measures. Typically preferences for health states defined by these systems are elicited from a representative sample of the general population. An important element in that elicitation process is the information that respondents were instructed to consider in providing their responses. METHODS: A random sample of community-dwelling respondents in Canada was surveyed in face-to-face interviews...
August 15, 2018: Health and Quality of Life Outcomes
Lan-Ping Guo, Ze-Kun Zhang, Xiao-Bo Zhang, Guang Yang, Hai-Nan Wang, Lu-Qi Huang
This paper comprehensively analyses the background and meaning of The Technological Guiding Principle for Assessment of Chinese Medicine Resources enacted by the former CFDA ( China Food and Drug Administration), moreover, it also points out that the Chinese medicine resources assessment with the purpose of guaranteeing the sustainable supplying capacity of Chinese medicine resources is the premise of new drug development; the Chinese medicine resources assessment which takes quality guarantee as the core is a significant action to promote the fixing of place of origin and quality-management antedisplacement for the traditional Chinese medicine industry; in this regard, the Chinese medicine resources assessment which aims at realizing the whole-process traceability is the key to building the high-quality modern traditional Chinese medicine brand...
July 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
X F Yang, R You, L Zhao, X Chen, X X Guo, Y L Wang
Objective: Quality of life and the influencing factors in patients with diabetic retinopathy before and after receiving treatment of pan-retinal photocoagulation (PRP) were studied. Methods: Prospective study. A total of 55 diabetic retinopathy patients were collected at Beijing Friendship Hospital, Capital Medical University from November 2016 to August 2017 and were surveyed using Vision Function Questionaire (VFQ-25) to evaluate their quality of life before and 3 months after treatment with PRP. According to diagnostic criteria, the patients were divided into two groups: severe nonproliferative diabetic retinopathy(NPDR) and proliferative diabetic retinopathy group(PDR)...
August 11, 2018: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
L Y Qiao, X G Cai, X X Li, J X Tan, Z Guan, Y Zhang, S Z Li, K Cao, N L Wang
Objective: To assess the retinal image quality of the normal northern rural Chinese adult population. Methods: A normal population-based, cross-sectional study. From Oct, 2012 to Jan 2013, a clustered, random sampling procedure was used to select normal population who visual acuity≤ 0(LogMAR) and 30-69 years old from 2 villages. All eligible subjects were invited to undergo a comprehensive eye examination, and the retinal image quality related index were examined with pupil 4 mm using objective optical quality analysis systemⅡ(OQAS Ⅱ, Visiometrics, Spain), including MTFcutoff, VA20, VA9, PSF50, PSF10, OSI, SR...
August 11, 2018: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
Sachiko Inoue, Motoko Kawashima, Yoshimune Hiratsuka, Tadashi Nakano, Hiroshi Tamura, Koichi Ono, Akira Murakami, Kazuo Tsubota, Masakazu Yamada
To evaluate the association between vision-related quality of life (QoL), physical inactivity, and locomotor dysfunction in subjects with visual impairment.This cross-sectional study included 215 visually impaired subjects recruited from six ophthalmology departments in Japan. The physical inactivity and locomotor dysfunction associated with their visual impairment was investigated. The physical activity level was assessed using the short form of the International Physical Activity Questionnaire and classified as high, moderate, or low...
August 13, 2018: Scientific Reports
Chih-Ling Hu, Kai-Ling Peng
Purpose: We report a rare case of silicone oil droplets adhering to the posterior surface of an intraocular lens (IOL) after removal of silicone oil for a patient with retinal reattachment, who had a history of pseudophakic rhegmatogenous retinal detachment. Case report: A 45-year-old male with a history of cataract surgeries of both eyes developed pseudophakic retinal detachment in his left eye. He received surgeries of scleral buckle and standard 3-port pars plana vitrectomy with silicon oil tamponade...
2018: International Medical Case Reports Journal
Jonathon Ashley Gibbs, Michael P Pound, Andrew P French, Darren M Wells, Erik H Murchie, Tony P Pridmore
Three-dimensional (3D) computer-generated models of plants are urgently needed to support both phenotyping and simulation-based studies such as photosynthesis modelling. However, the construction of accurate 3D plant models is challenging as plants are complex objects with an intricate leaf structure, often consisting of thin and highly reflective surfaces that vary in shape and size, forming dense, complex, crowded scenes. We address these issues within an image-based method by taking an active vision approach, one that investigates the scene to intelligently capture images, to image acquisition...
August 10, 2018: Plant Physiology
Steven Jean, Wietske Medema, Jan Adamowski, Chengzi Chew, Patrick Delaney, Arjen Wals
Novel methods for enhancing collaboration and interactions are required to ensure that stakeholders and governments are able to develop a shared vision that supports sustainable watershed governance. Particular attention must be placed on integrating stakeholders who would otherwise have limited decision-making power. By crossing professional, ideological and jurisdictional boundaries, stakeholders' perspectives are more likely to change than when staying within those boundaries. This process, known as boundary crossing, requires boundary objects; either artifacts, people, or institutions that play a bridging role between different boundary spaces...
October 1, 2018: Journal of Environmental Management
Michael J Bartiss
PURPOSE OF REVIEW: As the population ages, the number of patients presenting to ophthalmologists with complaints of double vision is increasing. RECENT FINDINGS: Diplopia is known to occur for optical, neuroophthalmological, strabismological and even iatrogenic reasons following various ophthalmic surgical procedures. The mainstays of the nonsurgical treatment of diplopia including no treatment, partial or total occlusion, press-on or ground in prisms and vergence exercises (to increase fusional vergence amplitudes) have been utilized for some time...
September 2018: Current Opinion in Ophthalmology
Nora N Sommer, Karla M Treitl, Eva Coppenrath, Hendrik Kooijman, Claudia Dechant, Michael Czihal, Theresa M Kolben, Sebastian E Beyer, Wieland H Sommer, Tobias Saam
OBJECTIVES: Arteritic anterior ischemic optic neuropathy (A-AION) caused by inflammatory occlusion of the posterior ciliary arteries is the most common reason for irreversible vision loss in patients with giant cell arteritis. Atypical clinical presentation and negative funduscopy can delay systemic high-dose corticosteroid therapy to prevent impending permanent blindness and involvement of the contralateral eye.The purpose of this study was to assess the diagnostic accuracy of 3-dimensional (3D) high-resolution T1-weighted black-blood magnetic resonance imaging (T1-BB-MRI) for the detection of posterior ciliary artery involvement in patients with giant cell arteritis and funduscopic A-AION...
August 8, 2018: Investigative Radiology
Sasha Strul, Penny Straughn
There is currently no well-defined guideline for treatment and management of patients with keratitis-ichthyosis-deafness (KID) syndrome, and most patients will face disabling vision loss due to corneal neovascularization and cicatrization. We offer this case as an example of how we can improve visual acuity (VA) and quality of life even in advanced cases of corneal neovascularization. We showcase the use of gas-permeable (GP) contact lenses to provide useful, functional VA in a patient with long-standing visual impairment secondary to corneal neovascularization and irregularity due to KID syndrome...
August 7, 2018: Eye & Contact Lens
Nasim Hashemi, Hamid Moghaddasi, Reza Rabiei, Farkhondeh Asadi, Azadeh Farahi
One of the important factors for achieving "Vision 2020" targets is the availability and accessibility of eye health information systems. This study aimed to describe eye health information systems in selected countries. The status of eye health information systems in Australia, the United States, and England was reviewed. Data were gathered from the PubMed, Scopus, and ScienceDirect databases. The main key terms used included, but were not limited to "National Action plan", "Eye Health Information System", "Database", and "Registery"...
July 2018: Journal of Ophthalmic & Vision Research
Beatrice Cochener, Guillaume Boutillier, Mathieu Lamard, Claire Auberger-Zagnoli
PURPOSE: To evaluate and compare the performance of two diffractive trifocal and one extended depth of focus (EDOF) intraocular lenses (IOLs). METHODS: In this 6-month, single-center, prospective, randomized, comparative study, patients undergoing routine cataract surgery were randomized to receive one of two trifocal IOLs (AcrySof IQ PanOptix; Alcon Laboratories, Inc., Fort Worth, TX, or FineVision Micro F; PhysIOL SA, Liège, Belgium) or an EDOF IOL (TECNIS Symfony; Abbott Medical Optics, Inc...
August 1, 2018: Journal of Refractive Surgery
Kai Kaarniranta, Jakub Kajdanek, Jan Morawiec, Elzbieta Pawlowska, Janusz Blasiak
PGC-1α (peroxisome proliferator-activated receptor gamma coactivator 1-alpha) is a transcriptional coactivator of many genes involved in energy management and mitochondrial biogenesis. PGC-1α expression is associated with cellular senescence, organismal aging, and many age-related diseases, including AMD (age-related macular degeneration), an important global issue concerning vision loss. We and others have developed a model of AMD pathogenesis, in which stress-induced senescence of retinal pigment epithelium (RPE) cells leads to AMD-related pathological changes...
August 7, 2018: International Journal of Molecular Sciences
K R Sekar, Mahadev Easwar, R Manikandan, K S Ravichandran
INTRODUCTION: The World Health Organization (WHO) has been asserting the importance of health care in today's world. The objective of this research is to find out the type of medication that needs to be provided to the people at early stages to prevent behavioural risk factors. The health department of United States has a great vision to improve the immune system of the people and has taken measures to do the same through a Behavioural Risk Factor Surveillance System (BRFSS). This research aims to prevent behavioural risk factors by predictive analysis using the above mentioned dataset from the Centres for Disease Control and Prevention (CDC)...
August 2, 2018: Journal of the National Medical Association
Anthony Chiche, Liem Trinh, Ornella Saada, Jean-François Faure, François Auclin, Christophe Baudouin, Alexandre Denoyer
PURPOSE: To assess the early time course of the visual function after small-incision lenticule extraction (SMILE) and laser in situ keratomileusis (LASIK). SETTING: Quinze-Vingts National Ophthalmology Hospital, Paris, France. DESIGN: Prospective case series. METHODS: Patients scheduled for bilateral small-incision lenticule extraction or LASIK were consecutively enrolled. In addition to standard refraction and visual acuity, contrast sensitivity, aberrometry, and patient-reported quality of vision and overall satisfaction were measured 1 day, 7 days, and 1 month postoperatively...
August 2, 2018: Journal of Cataract and Refractive Surgery
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