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Nathan Congdon
Journal Articles

Depression, Anxiety, Stress Symptoms and their Determinants among Secondary Students with Vision Impairment in Rural Northwestern China during the COVID-19 Pandemic

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Frontiers in Public Health,
Journal Articles

Barriers to Uptake of Cataract Surgery among Elderly Patients in Rural China: A Cross-sectional Study

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BMJ Open,
Journal Articles

Impact of Vision Impairment and Ocular Morbidity and their Treatment on Depression and Anxiety in Children: A Systematic Review

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Ophthalmology,
Journal Articles

The Prevalence and Correlates of Vision Impairment and Glasses Ownership among Ethnic Minority and Han Schoolchildren in Rural China

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PLOS ONE,
Journal Articles

Visual Impairment in Rural and Migrant Chinese School-Going Children: Prevalence, Severity, Correction and Association

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BMJ Ophthalmology,
Journal Articles

Safety of Eyeglasses Wear for Visual Acuity among Middle School Students in Northwestern Rural China: A Cluster-randomised Controlled Trial

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BMJ Open Ophthalmology,
Journal Articles

Impact of Spectacles Wear on Uncorrected Visual Acuity among Urban Migrant Primary School Children in China: A Cluster-Randomised Clinical Trial

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British Journal of Opthalmology,
Journal Articles

Effect of Chinese Eye Exercises on Change in Visual Acuity and Eyeglasses Wear among School-Aged Children in Rural China: A Propensity-Score-Matched Cohort Study

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BMC Complementary Medicine and Therapies,
Journal Articles

Visual Impairment and Spectacles Ownership among Upper Secondary School Students in Northwestern China

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Hong Kong Medical Journal,
Journal Articles

Impact of Various Types of Near Work and Time Spent Outdoors at Different Times of Day on Visual Acuity and Refractive Error Among Chinese School-Going Children

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PLoS ONe,
Journal Articles

Impact of a Local Vision Care Center on Glasses Ownership and Wearing Behavior in Northwestern Rural China: A Cluster-Randomized Controlled Trial

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International Journal of Environmental Research and Public Health,
Journal Articles

The Cost-Effectiveness of Alternative Vision Screening Models among Preschool Children in Rural China

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Acta Ophthalmologica,
Journal Articles

Teachers' Influence on Purchase and Wear of Children's Glasses in Rural China: The PRICE Study

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Clinical & Experimental Ophthalmology,
Journal Articles

Effect of a Local Vision Care Center on Eyeglasses Use and School Performance in Rural China A Cluster Randomized Clinical Trial

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JAMA Ophthalmology,
Journal Articles

Cluster-randomized Controlled Trial of the Effects of Free Glasses on Purchase of Children's Glasses in China: The PRICE (Potentiating Rural Investment in Children's Eyecare) Study

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PLOS ONE,
Journal Articles

Impact of a Teacher Incentive on Children’s Use of Eyeglasses: A Cluster-Randomized Controlled Trial

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American Journal of Opthalmology,
Journal Articles

Impact of Free Glasses and a Teacher Incentive on Children's Use of Eyeglasses: A Cluster-Randomized Controlled Trial

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American Journal of Ophthalmology,
Journal Articles

Population Prevalence of Need for Spectacles and Spectacle Ownership Among Urban Migrant Children in Eastern China

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JAMA Ophthalmology,
Journal Articles

Safety of Spectacles for Children's Vision: A Cluster-Randomized Controlled Trial

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American Journal of Ophthalmology,
Journal Articles

Factors Underlying Different Myopia Prevalence between Middle- and Low-income Provinces in China

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Ophthalmology,
Journal Articles

Poor Vision Among China’s Rural Primary School Students: Prevalence, Correlates and Consequences

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Journal Articles

An Investigation of Vision Problems and the Vision Care System in Rural China

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Southeast Asian Journal of Tropical Medicine and Public Health,
Journal Articles

Effect of providing free glasses on children's educational outcomes in China: The "Seeing is Learning" cluster-randomized controlled trial

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British Medical Journal,
Journal Articles

Accuracy of Rural Refractionists in Western China

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Investigative Ophthalmology & Visual Science ,