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Ophthalmic Epidemiology

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https://www.readbyqxmd.com/read/28139160/the-relation-between-sleep-disruption-and-cataract-in-a-large-population-based-study
#1
Yanjun Chen, David M Nondahl, Carla R Schubert, Barbara E K Klein, Ronald Klein, Karen J Cruickshanks
PURPOSE: To investigate the relation between sleep disruption and nuclear cataract, as well as the impact of cataract removal on sleep, in two discrete population-based cohorts. METHODS: This is a cross-sectional study of 5070 participants from three large longitudinal epidemiologic studies of age-related eye disease, hearing, olfaction, and cognition. Slit-lamp photos of the lens were obtained to grade nuclear cataract using a standardized protocol. The quality of sleep was assessed using a modified Wisconsin Sleep Cohort Study questionnaire...
January 31, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28139151/age-related-macular-degeneration-and-mortality-a-systematic-review-and-meta-analysis
#2
Myra B McGuinness, Amalia Karahalios, Robert P Finger, Robyn H Guymer, Julie A Simpson
PURPOSE: Age-related macular degeneration (AMD) is the leading cause of severe, irreversible vision loss in older adults. Evidence for an association between AMD and mortality remains inconclusive despite evidence for an association with cardiovascular and inflammatory diseases. We aim to compare all-cause, cardiovascular and cancer mortality between those with early or late AMD and control study participants. METHODS: A protocol was registered at PROSPERO (CRD42015020622)...
January 31, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28107088/the-national-eye-survey-of-trinidad-and-tobago-nestt-rationale-objectives-and-methodology
#3
Tasanee Braithwaite, Neville Q Verlander, Debra Bartholomew, Petra Bridgemohan, Kevin McNally, Allana Roach, Subash Sharma, Deo Singh, Konrad Pesudovs, Surujpal Teelucksingh, Christine Carrington, Samuel Ramsewak, Rupert Bourne
PURPOSE: This paper describes the rationale, study design and procedures of the National Eye Survey of Trinidad and Tobago (NESTT). The main objective of this survey is to obtain prevalence estimates of vision impairment and blindness for planning and policy development. METHODS: A population-based, cross-sectional survey was undertaken using random multistage cluster sampling, with probability-proportionate-to-size methods. Eligible participants aged 5 years and older were sampled from the non-institutional population in each of 120 cluster segments...
January 20, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28102752/the-importance-of-conditional-probability-in-diagnostic-reasoning-and-clinical-decision-making-a-primer-for-the-eye-care-practitioner
#4
Paul G Sanfilippo, Alex W Hewitt, David A Mackey
PURPOSE: To outline and detail the importance of conditional probability in clinical decision making and discuss the various diagnostic measures eye care practitioners should be aware of in order to improve the scope of their clinical practice. METHODS: We conducted a review of the importance of conditional probability in diagnostic testing for the eye care practitioner. RESULTS: Eye care practitioners use diagnostic tests on a daily basis to assist in clinical decision making and optimizing patient care and management...
January 19, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28102748/mini-review-changes-in-the-incidence-of-and-progression-to-proliferative-and-sight-threatening-diabetic-retinopathy-over-the-last-30-years
#5
Gerald Liew, Vincent W Wong, I-Van Ho
PURPOSE: Diabetic retinopathy is a leading cause of blindness worldwide. The last 3 decades have seen major improvements in glycemic and blood pressure control as well as the introduction of national screening programs, and we sought to determine if rates of proliferative diabetic retinopathy have changed as a result. METHODS: We conducted a systematic review to determine whether the incidence and progression rates of proliferative diabetic retinopathy and sight-threatening retinopathy have changed, focusing on large population-based studies with objective assessment of diabetic retinopathy...
January 19, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28102741/tutorial-on-biostatistics-linear-regression-analysis-of-continuous-correlated-eye-data
#6
Gui-Shuang Ying, Maureen G Maguire, Robert Glynn, Bernard Rosner
PURPOSE: To describe and demonstrate appropriate linear regression methods for analyzing correlated continuous eye data. METHODS: We describe several approaches to regression analysis involving both eyes, including mixed effects and marginal models under various covariance structures to account for inter-eye correlation. We demonstrate, with SAS statistical software, applications in a study comparing baseline refractive error between one eye with choroidal neovascularization (CNV) and the unaffected fellow eye, and in a study determining factors associated with visual field in the elderly...
January 19, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28045563/multivariable-regression-model-of-the-euroqol-5-dimension-questionnaire-in-patients-seeking-outpatient-low-vision-rehabilitation
#7
Alexis G Malkin, Judith E Goldstein, Robert W Massof
PURPOSE: To understand the source of between-person variance in baseline health utilities estimated from EuroQol 5-dimension questionnaire (EQ-5D) responses of a representative sample of the US low vision outpatient population prior to rehabilitation. METHODS: A prospective, observational study of 779 new low vision patients at 28 clinic centers in the US. The EQ-5D, Activity Inventory (AI), Telephone Interview for Cognitive Status (TICS), Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36) physical functioning component, and Geriatric Depression Scale (GDS) were administered by telephone interview prior to rehabilitation...
January 3, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28032805/nerve-fiber-layer-thickness-and-characteristics-associated-with-glaucoma-in-community-living-older-adults-prelude-to-a-screening-trial
#8
Barbara E K Klein, Chris A Johnson, Stacy M Meuer, Kyungmoo Lee, Andreas Wahle, Kristine E Lee, Amruta Kulkarni, Milan Sonka, Michael D Abràmoff, Ronald Klein
PURPOSE: To examine the associations of nerve fiber layer (NFL) thickness with other ocular characteristics in older adults. METHODS: Participants in the Beaver Dam Eye Study (2008-2010) underwent spectral domain optical coherence tomography (SD-OCT) scans of the optic nerve head, imaging of optic discs, frequency doubling technology (FDT) perimetry, measurement of intraocular pressure (IOP), and an interview concerning their history of glaucoma and use of drops to lower eye pressure...
December 29, 2016: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28032802/risk-factors-for-developing-myopia-among-schoolchildren-in-yerevan-and-gegharkunik-province-armenia
#9
Aida Giloyan, Tsovinar Harutyunyan, Varduhi Petrosyan
PURPOSE: Myopia is a complex condition leading to visual impairment and blindness. This study assessed the prevalence of and risk factors for myopia among schoolchildren in urban and rural areas of Armenia. METHODS: A cross-sectional interviewer-administered survey together with eye screenings was conducted among schoolchildren in the capital Yerevan and in Gegharkunik Province. The study used multi-stage random sampling to obtain the sample of 1260 schoolchildren...
December 29, 2016: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/27960579/genus-distribution-of-bacteria-and-fungi-associated-with-keratitis-in-a-large-eye-center-located-in-southern-china
#10
Lixia Lin, Weizhong Lan, Bingsheng Lou, Hongmin Ke, Yuanzhe Yang, Xiaofeng Lin, Lingyi Liang
PURPOSE: To investigate the genus distribution of bacteria and fungi associated with keratitis in a large eye center located in Southern China and to compare the results with existing data from other areas in China. METHODS: All results of corneal microbiological examinations from 2009 to 2013 of patients who had been clinically diagnosed with bacterial or fungal keratitis were obtained chronologically and anonymously from the microbiology database at Zhongshan Ophthalmic Center...
December 14, 2016: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28085561/focal-issue-on-gender-and-eye-care
#11
(no author information available yet)
No abstract text is available yet for this article.
February 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28085560/validating-translations-of-rating-scale-questionnaires-using-rasch-analysis
#12
Chris Bradley, Robert W Massof
No abstract text is available yet for this article.
February 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28032809/rationale-and-methodology-for-a-community-based-study-of-diabetic-retinopathy-in-an-indonesian-population-with-type-2-diabetes-mellitus-the-jogjakarta-eye-diabetic-study-in-the-community
#13
Muhammad B Sasongko, Angela N Agni, Firman S Wardhana, Satya P Kotha, Prateek Gupta, Tri W Widayanti, Supanji, Felicia Widyaputri, Rifa Widyaningrum, Tien Y Wong, Ryo Kawasaki, Jie Jin Wang, Suhardjo Pawiroranu
PURPOSE: There are no available data about diabetic retinopathy (DR) in the Indonesian population. This report summarizes the rationale and study design of the Jogjakarta Eye Diabetic Study in the Community (JOGED.COM), a community-based study to estimate the prevalence and risk factors of DR in persons with type 2 diabetes in Jogjakarta, Indonesia. METHODS: The JOGED.COM aimed to examine a cross-sectional sample of 1200 persons with type 2 diabetes aged 30 years and older residing in the study area...
February 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28001456/measurement-properties-of-the-persian-translated-version-of-graves-orbitopathy-quality-of-life-questionnaire-a-validation-study
#14
Mohsen Bahmani Kashkouli, Nasser Karimi, Mohamadreza Aghamirsalim, Mohammad Bagher Abtahi, Marzieh Nojomi, Hadi Shahrad-Bejestani, Masoud Salehi
PURPOSE: To determine the measurement properties of the Persian language version of the Graves orbitopathy quality of life questionnaire (GO-QOL). METHODS: Following a systematic translation and cultural adaptation process, 141 consecutive unselected thyroid eye disease (TED) patients answered the Persian GO-QOL and underwent complete ophthalmic examination. The questionnaire was again completed by 60 patients on the second visit, 2-4 weeks later. Construct validity (cross-cultural validity, structural validity and hypotheses testing), reliability (internal consistency and test-retest reliability), and floor and ceiling effects of the Persian version of the GO-QOL were evaluated...
February 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/27996334/postnatal-growth-and-retinopathy-of-prematurity-study-rationale-design-and-subject-characteristics
#15
Gil Binenbaum, Lauren A Tomlinson
PURPOSE: Postnatal-growth-based predictive models demonstrate strong potential for improving the low specificity of retinopathy of prematurity (ROP) screening. Prior studies are limited by inadequate sample size. We sought to study a sufficiently large cohort of at-risk infants to enable development of a model with highly precise estimates of sensitivity for severe ROP. METHODS: The Postnatal Growth and ROP (G-ROP) Study was a multicenter retrospective cohort study of infants at 30 North American hospitals during 2006-2012...
February 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/27982726/a-bayesian-analysis-of-a-randomized-clinical-trial-comparing-antimetabolite-therapies-for-non-infectious-uveitis
#16
Erica N Browne, Sivakumar R Rathinam, Anuradha Kanakath, Radhika Thundikandy, Manohar Babu, Thomas M Lietman, Nisha R Acharya
PURPOSE: To conduct a Bayesian analysis of a randomized clinical trial (RCT) for non-infectious uveitis using expert opinion as a subjective prior belief. METHODS: A RCT was conducted to determine which antimetabolite, methotrexate or mycophenolate mofetil, is more effective as an initial corticosteroid-sparing agent for the treatment of intermediate, posterior, and pan-uveitis. Before the release of trial results, expert opinion on the relative effectiveness of these two medications was collected via online survey...
February 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/27960638/agreement-in-measurement-of-optic-cup-to-disc-ratio-with-stereo-biomicroscope-funduscopy-and-digital-image-analysis-results-from-the-nigeria-national-blindness-and-visual-impairment-survey
#17
Fatima Kyari, Clare Gilbert
PURPOSE: To determine agreement in estimations of vertical cup-to-disc ratio (VCDR) between clinical stereo-biomicroscopic funduscopy and digital fundus image analysis. METHODS: Systematic sampling of 1-in-7 from a sample of 13,591 participants aged ≥40 years gave a subsample who were examined in detail. VCDR was estimated clinically by 60 diopter aspheric lens biomicroscopic funduscopy (c-VCDR) and by digital fundus images (i-VCDR) graded at the Moorfields Eye Hospital Reading Centre...
February 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/27960616/five-year-incidence-of-visual-impairment-in-middle-aged-iranians-the-shahroud-eye-cohort-study
#18
Hassan Hashemi, Shiva Mehravaran, Mohammad Hassan Emamian, Akbar Fotouhi
PURPOSE: To study the 5-year incidence of visual impairment and its causes and risk factors, in the middle-aged Iranian sample of the Shahroud Eye Cohort Study (ShECS). METHODS: Data from subjects who had participated in both phases of the ShECS were used to determine age- and sex-specific incidence rates of visual impairment using the World Health Organization (WHO) definitions for bilateral low vision (visual acuity, VA, >0.5 and ≤1.3 LogMAR in the better eye) and blindness (VA worse than 1...
February 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/27960583/effect-of-aging-on-retinal-nerve-fiber-layer-thickness-in-normal-asian-indian-eyes-a-longitudinal-study
#19
Tarannum Mansoori, Nagalla Balakrishna
PURPOSE: To determine longitudinal retinal nerve fiber layer (RNFL) thickness measurement change with aging, after a period of 3 years using spectral optical coherence tomography/scanning laser ophthalmoscope (OCT/SLO). METHODS: A total of 50 eyes of 25 normal subjects underwent RNFL thickness measurement in 2008 and again in 2011 by a single operator, using spectral OCT/SLO. Measurements were compared at baseline and at follow-up. Linear mixed model analysis was used to measure the effect of age on RNFL thickness measurements over the 3 years...
February 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/27960581/distribution-of-ocular-component-measures-and-refraction-in-brazilian-school-children
#20
Rodrigo Pessoa Cavalcanti Lira, Carlos Eduardo Leite Arieta, Thaís Helena Moreira Passos, Diana Maziero, Gustavo Lima do Valle Astur, Ítalo Fernandes do Espírito Santo, Ana Cláudia Bertolani, Luis Fernando Pozzi, Rosane Silvestre de Castro, Álvaro Antônio Bandeira Ferraz
PURPOSE: To describe ocular component values and refraction in 6-17-year-old school children in Campinas, Brazil. METHODS: To obtain a representative sample, a total of 1100 6-17-year-old public school students in Campinas, Brazil, were randomly selected and divided into groups according to median ages 6 years (range 5-7 years), 10 years (range 9-11 years), 14 years (range 13-15 years), and 17 years (range 16-18 years). Cycloplegic autorefraction and ocular biometry were performed on each child...
February 2017: Ophthalmic Epidemiology
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