Publications by authors named "Leon Ellwein"

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Effective refractive error coverage in adults: a systematic review and meta-analysis of updated estimates from population-based surveys in 76 countries modelling the path towards the 2030 global target.
Rupert Richard Alexander Bourne, Maria Vittoria Cicinelli, David A Selby, Tabassom Sedighi, Ian H Tapply, Leon B Ellwein

Lancet Glob Health· August 2025

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Influence of Distance and Near Visual Impairment on Self-Reported Near Visual Functioning in a Multinational Study.
Xiaotong Han, Leon B Ellwein, Amza Abdou, Kovin S Naidoo, Yuddha D Sapkota

Ophthalmology· February 2021

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Visual impairment and refractive error in school children in Bhutan: The findings from the Bhutan School Sight Survey (BSSS 2019).
Indra Prasad Sharma, Nor Tshering Lepcha, Tshering Lhamo, Leon B Ellwein, Gopal Prasad Pokharel

PLoS One· November 2020

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Meeting the need for corrective spectacles in visually impaired Chinese school children: the potential of ready-made spectacles.
Zhuoting Zhu, Leon B Ellwein, Sean K Wang, Jialiang Zhao, Mingguang He

Br J Ophthalmol· August 2019

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Prevalence and causes of blindness and vision impairment: magnitude, temporal trends and projections in South and Central Asia.
Vinay Nangia, Jost B Jonas, Ronnie George, Vijaya Lingam, Leon Ellwein

Br J Ophthalmol· July 2019

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Causes of Visual Impairment and Blindness in the 2006 and 2014 Nine-Province Surveys in Rural China.
Jialiang Zhao, Xiao Xu, Leon B Ellwein, Huaijin Guan, Mingguang He

Am J Ophthalmol· January 2019

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Cataract Surgical Coverage and Visual Acuity Outcomes in Rural China in 2014 and Comparisons With the 2006 China Nine-Province Survey.
Jialiang Zhao, Xiao Xu, Leon B Ellwein, Huaijin Guan, Mingguang He

Am J Ophthalmol· September 2018

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Prevalence of Vision Impairment in Older Adults in Rural China in 2014 and Comparisons With the 2006 China Nine-Province Survey.
Jialiang Zhao, Xiao Xu, Leon B Ellwein, Ning Cai, Huaijin Guan

Am J Ophthalmol· January 2018

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Self-refraction, ready-made glasses and quality of life among rural myopic Chinese children: a non-inferiority randomized trial.
Zhongqiang Zhou, Tingting Chen, Ling Jin, Dongxing Zheng, Shangji Chen, Leon Ellwein

Acta Ophthalmol· September 2017

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Progression of Near Vision Loss and Incidence of Near Vision Impairment in an Adult Chinese Population.
Xiaotong Han, Leon B Ellwein, Xinxing Guo, Yin Hu, William Yan

Ophthalmology· May 2017

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Uptake, Barriers and Outcomes in the Follow-up of Patients Referred for Free-of-Cost Cataract Surgery in the Sao Paulo Eye Study.
Marcia H Mitsuhiro, Adriana Berezovsky, Rubens Belfort, Leon B Ellwein, Solange R Salomao

Ophthalmic Epidemiol· March 2016

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Prevalence of Amblyopia in School-Aged Children and Variations by Age, Gender, and Ethnicity in a Multi-Country Refractive Error Study.
Ou Xiao, Ian G Morgan, Leon B Ellwein, Mingguang He,

Ophthalmology· September 2015

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[Prevalence of blindness and moderate and severe visual impairment among adults aged 50 years or above in Yangxi County of Guangdong Province: the China Nine-Province Survey].
Jian Ge, Mingguang He, Jialiang Zhao, Min Fang, Leon B Ellwein

Zhonghua Yan Ke Za Zhi· March 2014

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[Prevalence of blindness and moderate and severe visual impairment among adults aged 50 years or above in Shuangcheng City of Heilongjiang Province: the China Nine-Province Survey].
Liqiong Zhang, Hao Cui, Jialiang Zhao, Leon B Ellwein, Zhijian Li

Zhonghua Yan Ke Za Zhi· March 2014

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Age-related prevalence and met need for correctable and uncorrectable near vision impairment in a multi-country study.
Mingguang He, Amza Abdou, Leon B Ellwein, Kovin S Naidoo, Yuddha D Sapkota

Ophthalmology· January 2014

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[Prevalence and causes of blindness and moderate and severe visual impairment among adults aged 50 years or above in Yongchuan District of Chongqing City: the China Nine-Province survey].
Zheng-qin Yin, Jia-liang Zhao, Ping-hua Li, Leon b Ellwein, Sheng-fang Song

Zhonghua Yan Ke Za Zhi· September 2013

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[Prevalence and causes of blindness and moderate and severe visual impairment among adults aged 50 years or above in Longyao County of Hebei Province:the China Nine-Province survey].
Jian-hua Lü, Jia-liang Zhao, Leon B Ellwein, Shan-yu Li, Dong Han

Zhonghua Yan Ke Za Zhi· September 2013

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[Prevalence and causes of blindness and moderate and severe visual impairment among adults aged 50 years or above in Changji City of Xinjiang Uygur Autonomous Region: the China Nine-Province survey].
Xian-zhi Ma, Jia-liang Zhao, Leon B Ellwein, Bin Wei, Jing Chen

Zhonghua Yan Ke Za Zhi· September 2013

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[Prevalence and causes of blindness and moderate and severe visual impairment among adults aged 50 years or above in Luxi County of Yunnan Province: the China Nine-Province survey].
Ning Cai, Yuan-sheng Yuan, Jia-liang Zhao, Hua Zhong, Leon B Ellwein

Zhonghua Yan Ke Za Zhi· September 2013

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[Prevalence of blindness and moderate and severe visual impairment among adults aged 50 years or above in Ji'an county of Jiangxi province:the China Nine-Province Survey].
Jing-lin Yi, Rong Luo, Jia-liang Zhao, Hui Xie, Yong-quan Bai, Leon B Ellwein

Zhonghua Yan Ke Za Zhi· June 2012

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[Prevalence of blindness and low vision among adults aged 50 years or above in Ji'an county of Jiangxi province: the China nine-province survey].
Rong Luo, Jia-liang Zhao, Jing-lin Yi, Hui Xie, Yong-quan Bai, Leon B Ellwein

Zhonghua Yan Ke Za Zhi· June 2012

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[Prevalence of blindness and moderate and severe visual impairment among adults aged 50 years or above in the Shunyi District of Beijing: the China Nine-Province Survey].
Hu Liu, Jia-Liang Zhao, Hong Lu, Feng-Rong Li, Jin Mao, Leon B Ellwein

Zhonghua Yan Ke Za Zhi· March 2012

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[Prevalence of blindness and moderate and severe visual impairment among adults aged 50 years or above in Qidong City of Jiangsu Province: the China Nine-Province Survey].
Hong Lu, Huai-Jin Guan, Zhui Dai, Mi Li, Yan Wang, Leon B Ellwein

Zhonghua Yan Ke Za Zhi· March 2012

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[Prevalence and surgery status of cataract among adults aged 50 years or above in the Shunyi district of Beijing: the China Nine-Province Survey].
Feng-Rong Li, Jia-Liang Zhao, Hong Lu, Hu Liu, Jin Mao, Leon B Ellwein

Zhonghua Yan Ke Za Zhi· March 2012

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[Prevalence and surgery status of cataract among adults aged 50 years or above in Qidong City of Jiangsu Province: the China Nine-Province Survey].
Huai-Jin Guan, Hong Lu, Zhui Dai, Mi Li, Yan Wang, Leon B Ellwein

Zhonghua Yan Ke Za Zhi· March 2012

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