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Ophthalmic Epidemiology

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https://www.readbyqxmd.com/read/29431547/feasibility-of-the-rapid-assessment-of-avoidable-blindness-with-diabetic-retinopathy-module-raab-dr-in-industrialised-countries-challenges-and-lessons-learned-in-hungary
#1
János Németh, Dorottya Szabó, Gábor Tóth, Gábor Sándor, Regina Lukács, Anita Pék, Irén Szalai, András Papp, Serge Resnikoff, Hans Limburg
PURPOSE: To present experiences gained during the planning, implementation, and practical performance of the rapid assessment of avoidable blindness with diabetic retinopathy module (RAAB+DR) in an established market economy. METHODS: A total of 3523 people aged 50 years or older were examined at their homes in 105 randomly selected clusters in Hungary. During the 4-month-long field work, five teams visited the clusters. Each team was composed of a senior ophthalmic resident or eye specialist, a nurse, an assistant, a driver, and a local guide...
February 12, 2018: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29336690/advanced-glaucoma-at-presentation-is-associated-with-poor-follow-up-among-glaucoma-patients-attending-a-tertiary-eye-facility-in-southern-nigeria
#2
Rita Omoso Momoh, Catey Bunce, Gregrey Agbonvihele Oko-Oboh, Clare E Gilbert
PURPOSE: Globally, particularly in Africa, poor compliance with medication is a major problem in glaucoma management but little is known about follow-up rates among African glaucoma patients. The aim of this study was to determine rates of follow-up among glaucoma patients attending a tertiary hospital in southern Nigeria and investigate predictors of poor follow-up. METHODS: Data were extracted from medical records of new glaucoma patients who attended the hospital between June 2011 and May 2013...
January 16, 2018: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29333897/adherence-to-the-american-diabetes-association-retinal-screening-guidelines-for-population-with-diabetes-in-the-united-states
#3
JaeJin An, Fang Niu, Adam Turpcu, Yamina Rajput, T Craig Cheetham
PURPOSE: (1) To assess long-term adherence to American Diabetes Association guideline-recommended retinal screening among population with diabetes in the United States. (2) To determine factors associated with long-term adherence to routine eye screening exams. METHODS: A retrospective cohort study was conducted in adult patients with diabetes identified from January 2009 to December 2010. Patients were followed until disenrollment, death, or study end date (December 2013)...
January 15, 2018: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29281362/types-of-lamp-for-homework-and-myopia-among-chinese-school-aged-children
#4
Chen-Wei Pan, Rong-Kun Wu, Hu Liu, Jun Li, Hua Zhong
PURPOSE: We aim to determine the association of the types of lamp for homework including incandescent lamp, fluorescent lamp, and light-emitting diode (LED) lamp with the prevalence of myopia in Chinese children. METHODS: 2346 grade 7 students from ten middle schools (93.5% response rate) aged 13 to 14 years in Mojiang, a small county located in Southwestern China, participated in the study. Refractive error was measured with cycloplegia using an autorefractor by optometrists or trained technicians...
December 27, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29281342/a-population-based-survey-of-visual-impairment-and-its-correlates-in-mahabubnagar-district-telangana-state-india
#5
Islay Mactaggart, Sarah Polack, Gvs Murthy, Hannah Kuper
PURPOSE: To estimate the prevalence and correlates of visual impairment in Mahabubnagar district, Telangana, India. METHODS: Fifty-one clusters of 80 people (all ages) were sampled with probability proportionate to size. Households within clusters were selected through the compact segment sampling. Visual acuity (VA) was measured with a tumbling "E" chart. An Ophthalmic Assistant or Vision Technician examined people with VA<6/12 in either eye. Other impairments (hearing, physical) were clinically assessed and self-reported functional difficulties measured using the Washington Group Extended Set...
December 27, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29281316/retinal-microvascular-signs-and-incidence-of-abdominal-aortic-aneurysm-the-atherosclerosis-risk-in-communities-study
#6
Aaron R Folsom, Pamela L Lutsey, Ronald Klein, Barbara E Klein, Weihong Tang
PURPOSE: To test the hypothesis that retinal microvascular abnormalities known to predict other cardiovascular diseases are associated prospectively with risk of abdominal aortic aneurysm. The rationale is that aortic aneurysm involves small vessel pathology that parallels, to some degree, retinal vasculopathy. METHODS: In 1993-1995, the Atherosclerosis Risk in Communities (ARIC) Study, a prospective population-based cohort, took retinal photographs of a randomly selected eye of 10,911 ARIC participants (initial mean age 60 years)...
December 27, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29190171/associations-with-retinal-vascular-occlusions-in-a-diverse-urban-population
#7
Eric J Schwaber, Nia Fogelman, Ethan K Sobol, Devi Mehrotra, Jonathan A Powell, Umar Mian, David C Gritz
PURPOSE: Retinal vascular occlusions can lead to sudden and permanent visual impairment or blindness. Few epidemiological studies on retinal vascular occlusions have been conducted, especially on diverse populations. METHODS: This is a retrospective case-control study of all incident retinal vascular occlusions occurring during a three and one-half year study period at Montefiore Medical Center, capturing all potential cases by diagnosis codes. Patients with retinal venous occlusions (RVO) and retinal arterial occlusions (RAO) were analyzed separately and compared to age-matched control groups...
November 30, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29185814/pupil-dilation-may-affect-retinal-vessel-caliber-measures
#8
Jie Jin Wang, Yuan Shi, Jing Xie, Ava G Tan, Lauren Ab Hogdson, Sharon Lee, Meredith Wickens, Victoria F Cosatto, Kristina Kairaitis, Richard Lindley, Lyndell L Lim, Paul Mitchell, John R Wheatley, Terence C Amis
PURPOSE: To assess the effect of pupil dilation on measures of retinal vessel caliber. DESIGN: Observational study with self-comparisons Methods: Retinal photographs were taken for both eyes of 25 subjects before and after pupil dilation. Three photographic graders, masked to pupil dilation status, measured the same set of images using a computer-assisted, semi-automatic method. We compared means (standard deviations) of retinal arteriolar caliber equivalent (CRAE) and retinal venular caliber equivalent (CRVE) of the same eyes between pre- and post-dilation images...
November 29, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29182463/willingness-to-pay-for-cataract-surgery-is-much-lower-than-actual-costs-in-zamfara-state-northern-nigeria
#9
Nazaradden Ibrahim, Jacqueline Ramke, Francisco Pozo-Martin, Clare E Gilbert
PURPOSE: Direct medical and non-medical costs incurred by those undergoing subsidised cataract surgery at Gusau eye clinic, Zamfara state, were recently determined. The aim of this study was to assess the willingness to pay for cataract surgery among adults with severe visual impairment or blindness from cataract in rural Zamfara and to compare this to actual costs. METHODS: In three rural villages served by Gusau eye clinic, key informants helped identify 80 adults with bilateral severe visual impairment or blindness (<6/60), with cataract being the cause in at least one eye...
November 28, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29182452/exome-array-analysis-of-nuclear-lens-opacity
#10
Stephanie J Loomis, Alison P Klein, Kristine E Lee, Fei Chen, Samantha Bomotti, Barbara Truitt, Sudha K Iyengar, Ronald Klein, Barbara E K Klein, Priya Duggal
PURPOSE: Nuclear cataract is the most common subtype of age-related cataract, the leading cause of blindness worldwide. It results from advanced nuclear sclerosis, or opacity in the center of the optic lens, and is affected by both genetic and environmental risk factors, including smoking. We sought to understand the genetic factors associated with nuclear sclerosis through interrogation of rare and low frequency coding variants using exome array data. METHODS: We analyzed Illumina Human Exome Array data for 1,488 participants of European ancestry in the Beaver Dam Eye Study who were without cataract surgery for association with nuclear sclerosis grade, controlling for age and sex...
November 28, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29172840/the-influence-of-oral-statin-medications-on-progression-of-glaucomatous-visual-field-loss-a-propensity-score-analysis
#11
Ben Whigham, Eugene Z Oddone, Sandra Woolson, Cynthia Coffman, R Rand Allingham, Christine Shieh, Kelly W Muir
PURPOSE: The purpose of this study was to examine the association between oral statin use and the progression of open angle glaucoma. METHODS: Medical records of 847 Veterans were reviewed to collect statin use history, record demographic and comorbid medical conditions, and review visual fields. Visual field progression was judged by an ophthalmologist masked to statin use history. Progression rates in a propensity score matched cohort were compared between statin users and nonusers using McNemar's test with the propensity model derived using associated medical and demographic factors...
November 27, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28532207/tutorial-on-biostatistics-statistical-analysis-for-correlated-binary-eye-data
#12
Gui-Shuang Ying, Maureen G Maguire, Robert Glynn, Bernard Rosner
PURPOSE: To describe and demonstrate methods for analyzing correlated binary eye data. METHODS: We describe non-model based (McNemar's test, Cochran-Mantel-Haenszel test) and model-based methods (generalized linear mixed effects model, marginal model) for analyses involving both eyes. These methods were applied to: (1) CAPT (Complications of Age-related Macular Degeneration Prevention Trial) where one eye was treated and the other observed (paired design); (2) ETROP (Early Treatment for Retinopathy of Prematurity) where bilaterally affected infants had one eye treated conventionally and the other treated early and unilaterally affected infants had treatment assigned randomly; and (3) AREDS (Age-Related Eye Disease Study) where treatment was systemic and outcome was eye-specific (both eyes in the same treatment group)...
February 2018: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28891729/early-age-related-macular-degeneration-with-cardiovascular-and-renal-comorbidities-an-analysis-of-the-national-health-and-nutrition-examination-survey-2005-2008
#13
Qi Cheng, Jinan B Saaddine, Ronald Klein, Richard Rothenberg, Chiu-Fang Chou, Dora Il'yasova
PURPOSE: A cross sectional study was designed to examine the relationship of early age-related macular degeneration (AMD) with comorbidities of cardiovascular and renal conditions in the representative population using National Health and Nutrition Examination Survey (NHANES), 2005-2008. METHODS: Participants (≥40 years) who underwent retinal photography were included. Early AMD was defined by the retinal digital images. The comorbidities were self-reported stroke and heart disease (HD), including angina pectoris (AP), coronary heart disease (CHD), congestive heart failure (CHF), and myocardial infarction (MI)...
December 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28532291/using-key-informant-method-to-determine-the-prevalence-and-causes-of-childhood-blindness-in-south-eastern-nigeria
#14
Ada E Aghaji, Ifeoma R Ezegwui, Jude O Shiweobi, Cyril C Mamah, Mary N Okoloagu, Ernest N Onwasigwe
PURPOSE: To determine the prevalence and causes of childhood blindness in an underserved community in south-eastern Nigeria using the key informant method. METHODS: This was a descriptive cross-sectional study. Key informants (KI) appointed by their respective communities received 1-day training on identification of blind children in their communities. Two weeks later, the research team visited the agreed sites within the community and examined the identified children...
December 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28426334/myopigenic-activity-change-and-its-risk-factors-in-urban-students-in-beijing-three-year-report-of-beijing-myopia-progression-study
#15
Zhong Lin, Balamurali Vasudevan, Kenneth J Ciuffreda, Hong Jia Zhou, Guang Yun Mao, Ning Li Wang, Yuan Bo Liang
PURPOSE: To investigate the myopigenic activity change and its risk factors in urban students in Beijing. METHODS: A total of 241 primary or secondary students aged 6-17 years from the Beijing Myopia Progression Study (BMPS) were re-examined 3 years after their baseline enrollment. A detailed questionnaire was administered to assess myopigenic activities at both baseline and at the 3-year follow-up. Altogether, 217 students (90.0%) with completed data were included in the analysis...
December 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28422552/rapid-assessment-of-avoidable-blindness-and-diabetic-retinopathy-in-gilan-province-iran
#16
MULTICENTER STUDY
Marzieh Katibeh, Hassan Behboudi, Siamak Moradian, Yousef Alizadeh, Ramin Beiranvand, Hamideh Sabbaghi, Hamid Ahmadieh
PURPOSE: To conduct an assessment of avoidable blindness and diabetic retinopathy (DR) in Gilan, 2014. METHODS: A cross-sectional population-based survey was performed on a representative sample of urban and rural individuals aged ≥50 years of the province. Blindness was defined as presenting visual acuity (PVA) <3/60 in the better eye. Moderate visual impairment (MVI) and severe visual impairment (SVI) were defined as 6/60 ≤ PVA <6/18 and 3/60 ≤ PVA <6/60 in the better eye, respectively...
December 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28402694/serum-phosphate-and-retinal-microvascular-changes-the-multi-ethnic-study-of-atherosclerosis-and-the-beaver-dam-eye-study
#17
Rupal Mehta, Alexander Hodakowski, Xuan Cai, Kris E Lee, Bryan R Kestenbaum, Ian H de Boer, Amani Fawzi, Tien Yin Wong, Joachim Ix, Barbara Klein, Ronald Klein, Tamara Isakova
PURPOSE: Higher levels of serum phosphate are strongly linked to increased risk of cardiovascular disease and therapies aimed to lower serum phosphate are employed in the management of patients with chronic kidney disease (CKD). Data are limited, however, on serum phosphate as a risk factor for microvascular disease in community-based populations. It is important to determine the impact of novel risk factors, such as phosphate, on the microvasculature. METHODS: We conducted a prospective study of 3919 individuals in the Multi-Ethnic Study of Atherosclerosis (MESA) and 3544 individuals in the Beaver Dam Eye Study (BDES) to test the associations of serum phosphate with retinopathy and retinal vessel caliber, and change in retinopathy severity and change in retinal vessel caliber...
December 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28346038/recruitment-and-testing-protocol-in-the-national-eye-health-survey-a-population-based-eye-study-in-australia
#18
Joshua Foreman, Stuart Keel, Peter van Wijngaarden, Hugh R Taylor, Mohamed Dirani
PURPOSE: To present the recruitment and testing methodology of the National Eye Health Survey (NEHS), a population-based study that aimed to determine the prevalence and causes of vision impairment and blindness in Australia. METHODS: Non-Indigenous Australians aged 50 years and older and Indigenous Australians aged 40 years and older were recruited using a door-to-door approach from 30 randomly selected geographical areas, stratified by remoteness. Participants underwent a vision examination, anterior segment assessment, intraocular pressure testing, perimetry, and fundus photography...
December 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28346032/presence-of-vision-impairment-and-risk-of-hospitalization-among-elderly-medicare-beneficiaries
#19
Sila Bal, Jibby E Kurichi, Pui L Kwong, Dawei Xie, Sean Hennessy, Ling Na, Liliana E Pezzin, Joel E Streim, Hillary R Bogner
PURPOSE: To examine the association between vision impairment and all-cause hospitalization among elderly Medicare beneficiaries. METHODS: A population-based study (N = 22,681) of community-dwelling Medicare beneficiaries aged 65 years and older who participated in the Medicare Current Beneficiary Survey for the years 2001-2007. Beneficiaries were classified into self-reported presence of vision impairment versus no vision impairment. Inpatient hospitalizations were identified using Medicare claims data...
December 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29157064/gender-related-effects-of-vision-impairment-characteristics-on-depression-in-korea
#20
Hye Won Park, Wanhyung Lee, Jin-Ha Yoon
PURPOSE: To investigate the gender-specific associations between perceived vision impairment and symptoms of depression. METHODS: We used the data from the 2012 Korean Longitudinal Study of Aging database of 7448 individuals aged 45 years and older. Questionnaires assessing depression symptoms and perceived visual impairment at near, distance, and in general were administered. Logistic regression analyses were used to evaluate if visual impairment could lead to depression, adjusting for the potential confounders of age, socioeconomic status (household income, education level, marital status, and employment status), and health behaviors (alcohol consumption, smoking, and physical activity level) after gender stratification...
November 20, 2017: Ophthalmic Epidemiology
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