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Ophthalmic Epidemiology

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https://www.readbyqxmd.com/read/29190171/associations-with-retinal-vascular-occlusions-in-a-diverse-urban-population
#1
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
#2
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
#3
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
#4
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
#5
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/29157064/gender-related-effects-of-vision-impairment-characteristics-on-depression-in-korea
#6
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
https://www.readbyqxmd.com/read/29144188/corrigendum
#7
(no author information available yet)
No abstract text is available yet for this article.
November 16, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29140735/factors-associated-with-visual-acuity-in-patients-with-cystoid-macular-oedema-and-retinitis-pigmentosa
#8
Gerald Liew, Anthony T Moore, Patrick D Bradley, Andrew R Webster, Michel Michaelides
PURPOSE: Retinitis pigmentosa is the most common inherited retinal dystrophy. The factors associated with visual acuity in patients with other retinal diseases are well known, but are poorly understood in patients with retinitis pigmentosa. This knowledge is useful for prognosis and to support secondary endpoints in clinical trials. METHODS: We conducted a cross-sectional study of consecutive patients recruited from the inherited retinal disease service from January 2012 to December 2012...
November 15, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29131696/risk-factors-for-discontinuation-of-treatment-for-neovascular-age-related-macular-degeneration
#9
Inger Westborg, Aldana Rosso
PURPOSE: To investigate risk factors for treatment discontinuation for neovascular age-related macular degeneration (nAMD). METHODS: Data from the Swedish Macula Register and the Skåne Healthcare Register are reported on the treatment received by 932 nAMD patients diagnosed 2013-2015. Treatment discontinuation is defined as having a termination visit or lacking a control or treatment visit during the period of 10-14 months after the diagnostic visit. The risk of treatment discontinuation during the first year is estimated using a Poisson model and a classification tree...
November 13, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29125374/interventions-to-improve-utilization-of-cataract-surgical-services-by-girls-case-studies-from-asia-and-africa
#10
Priya Adhisesha Reddy, Elizabeth A Kishiki, Hari Bahadur Thapa, Lisa Demers, Robert Geneau, Ken Bassett
PURPOSE: Gender and blindness initiatives continue to make eye care personnel aware of the service utilization inequity strongly favouring men, yet interventions to reduce that inequity, particularly for girls, are under developed. METHODS: This descriptive study gathered quantitative data on the degree of gender equity at five Child Eye Health Tertiary Facilities (CEHTFs) in Asia and Africa and conducted in-depth interviews with eye care personnel to assess their strategies and capacity to reduce gender inequity...
November 10, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29095074/evaluation-of-retinopathy-of-prematurity-incidence-with-telemedicine-confirmation-in-gansu-china-a-pilot-study
#11
Xinxin Zhang, Yuping Wang, J Niklas Ulrich, Yi Yang, Leona Ding, Yi Yang, Ding Xu, Kristina Tarczy-Hornoch, Michelle T Cabrera
PURPOSE: To determine the incidence of retinopathy of prematurity (ROP) in Gansu, China by combining bedside examinations with remote RetCam (Clarity Medical Systems, Pleasanton, CA, USA) diagnosis. METHODS: ROP screening via indirect ophthalmoscopy followed by RetCam imaging was performed from 2014 to 2015. Three ROP-experienced ophthalmologists interpreted images remotely. Incidence of ROP was determined by combining bedside and telemedicine diagnoses. RESULTS: Of 139 examined infants and 137 complete records, 20 (14...
November 2, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29035128/prospective-study-of-plasma-homocysteine-its-dietary-determinants-and-risk-of-age-related-macular-degeneration-in-men
#12
William G Christen, Nancy R Cook, Stephanie E Chiuve, Paul M Ridker, J Michael Gaziano
PURPOSE: Cross-sectional and case-control studies generally support a direct association between elevated plasma homocysteine and age-related macular degeneration (AMD), but data from prospective studies are limited. We examined the prospective relation of plasma homocysteine level, its dietary determinants, and risk of AMD in a large cohort of apparently healthy male physicians. METHODS: During a mean follow-up of 11.2 years, we identified 146 incident cases of visually significant AMD (responsible for a reduction of visual acuity to 20/30 or worse), and 146 controls matched for age, smoking status, and time of blood draw...
October 16, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29023169/associations-of-physical-activity-and-sedentary-behaviour-with-vision-threatening-diabetic-retinopathy-in-indonesian-population-with-type-2-diabetes-mellitus-jogjakarta-eye-diabetic-study-in-the-community-joged-com
#13
D P Dharmastuti, A N Agni, F Widyaputri, S Pawiroranu, Z M Sofro, F S Wardhana, S Haryanto, T W Widayanti, S Kotha, P Gupta, M B Sasongko
PURPOSE: To investigate the association of physical activity (PA) and sedentary behaviour with diabetic retinopathy (DR) in type 2 diabetes adults. METHODS: A community-based cross-sectional study of adults with type 2 diabetes. DR was assessed from disc- and macula-centred fundus photograph, and categorised into mild, moderate non-proliferative DR (NPDR), and Vision-Threatening DR (VTDR). Worse eye was used to determine the person's DR severity. PA was assessed using WHO Global Physical Activity Questionnaire (GPAQ)...
October 12, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28990827/ural-eye-and-medical-study-description-of-study-design-and-methodology
#14
Mukharram Bikbov, Rinat R Fayzrakhmanov, Gyulli Kazakbaeva, Jost B Jonas
PURPOSE: Since there is a scarcity on population-based health information available for Russia, we conducted this project to assess the prevalence of major ocular and systemic disorders and their associated risk factors. METHODS: A population-based cross-sectional study (Ural Eye and Medical Study (UEMS)) was performed in Bashkortostan 1300 km east of Moscow. The sampling frame consisted of all inhabitants aged over 40 years and living in an urban study area in the capital city Ufa and a rural region at 65 km outside of Ufa...
October 9, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28985110/uncorrected-and-corrected-refractive-error-experiences-of-nepalese-adults-a-qualitative-study
#15
Himal Kandel, Jyoti Khadka, Mohan Krishna Shrestha, Sadhana Sharma, Sandhya Neupane Kandel, Purushottam Dhungana, Kishore Pradhan, Bhagavat P Nepal, Suman Thapa, Konrad Pesudovs
PURPOSE: The aim of this study was to explore the impact of corrected and uncorrected refractive error (URE) on Nepalese people's quality of life (QoL), and to compare the QoL status between refractive error subgroups. METHODS: Participants were recruited from Tilganga Institute of Ophthalmology and Dhulikhel Hospital, Nepal. Semi-structured in-depth interviews were conducted with 101 people with refractive error. Thematic analysis was used with matrices produced to compare the occurrence of themes and categories across participants...
October 6, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28976783/prevalence-of-refractive-error-presbyopia-and-unmet-need-of-spectacle-coverage-in-a-northern-district-of-bangladesh-rapid-assessment-of-refractive-error-study
#16
Mohammad Muhit, Hasan Minto, Afroza Parvin, Mohammad Z Jadoon, Johurul Islam, Sumrana Yasmin, Gulam Khandaker
PURPOSE: To determine the prevalence of refractive error (RE), presbyopia, spectacle coverage, and barriers to uptake optical services in Bangladesh. METHOD: Rapid assessment of refractive error (RARE) study following the RARE protocol was conducted in a northern district (i.e., Sirajganj) of Bangladesh (January 2010-December 2012). People aged 15-49 years were selected, and eligible participants had habitual distance and near visual acuity (VA) measured and ocular examinations were performed in those with VA<6/18...
October 4, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28976241/attitudes-and-perceptions-of-eye-care-workers-and-health-administrators-regarding-task-sharing-in-screening-and-detection-for-management-of-diabetic-retinopathy-in-pakistan
#17
Mufarriq Shah, Ayesha Noor, Gail M Ormsby, Rahul Chakrabarti, C Alex Harper, Fakir Amirul Islam, Jill Keeffe
PURPOSE: The shortage of ophthalmologists in many countries is a major barrier to timely provision of eye care. A team work approach to screen, detect and manage diabetic retinopathy (DR) could achieve greater screening coverage of people with diabetes to prevent vision loss. This study aimed to assess the attitudes and perceptions of eye care workers and health administrators regarding task sharing for management of DR. METHODS: Using purposive sampling, 121 eye and health care workers in five selected hospitals in two provinces in Pakistan were recruited...
October 4, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28945495/validity-of-code-based-algorithms-to-identify-primary-open-angle-glaucoma-poag-in-veterans-affairs-va-administrative-databases
#18
K S Biggerstaff, B J Frankfort, S Orengo-Nania, J Garcia, E Chiao, J R Kramer, D White
PURPOSE: The validity of the International Classification of Diseases, 9th revision, Clinical Modification (ICD-9) code for primary open angle glaucoma (POAG) in the Department of Veterans Affairs (VA) electronic medical record has not been examined. We determined the accuracy of the ICD-9 code for POAG and developed diagnostic algorithms for the detection of POAG. METHODS: We conducted a retrospective study of abstracted data from the Michael E. DeBakey VA Medical Center's medical records of 334 unique patients with at least one visit to the Eye Clinic between 1999 and 2013...
September 25, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28945484/evaluation-of-maternal-attachment-self-efficacy-levels-of-depression-and-anxiety-in-mothers-who-have-babies-diagnosed-with-retinopathy-of-prematurity
#19
Gonca Özyurt, Ayhan Özyurt, Taylan Özyurt, Aylin Yaman, A Tulin Berk
PURPOSE: The aim of this study is to evaluate the emotional stress and its effects on parental self-efficacy and mother-infant attachment in mothers whose babies were diagnosed with retinopathy of prematurity (ROP). METHODS: Study sample was consisted of voluntarily participating 82 mothers whose babies were first diagnosed with ROP, 83 mothers of preterm babies without ROP, and 85 mothers of term babies admitting for their routine visits. Sociodemographic data form maternal attachment scale, state-trait anxiety inventory, Edinburgh postnatal depression scale, and parental self-efficacy scale were applied to study participants, and the overall results of three groups were statistically compared...
September 25, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28945466/field-testing-project-to-pilot-world-health-organization-eye-health-indicators-in-latin-america
#20
Kristen A Eckert, Van C Lansingh, Joan McLeod-Omawale, João M Furtado, Francisco Martinez-Castro, Marissa J Carter
PURPOSE: To develop and implement mechanisms to collect, report, and assess the World Health Organization (WHO) core eye health indicators in Chile, Honduras, Mexico, Peru, and Uruguay. METHODS: Simple templates for a situational analysis (of data collection and reporting processes), a national data collection strategy, and a national work plan to implement the core eye health indicators were developed. Public and private sector representatives from the ministries of health (MOHs), national vision committees, and national societies of ophthalmology of each country used these tools with 2013 baseline data to improve their data collection processes and collected 2015 data...
September 25, 2017: Ophthalmic Epidemiology
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