BACKGROUND Headache is a common complaint in children occasionally requiring hospital admission. The purposes of the present study were to analyze the prevalence of uncorrected ametropia in children with headache admitted to the hospital, and evaluate the importance of refraction assessment as part of their evaluation. METHODS A retrospective review of children admitted to the Tel Aviv Medica...

IMPORTANCE Working is critical to personal health and well-being. We examine the association of vision measured objectively with work status using a nationally representative sample of working-age Americans. OBSERVATION A total of 19 849 participants from the 1999-2008 National Health and Nutrition Examination Survey completed a vision examination and employment/demographic questionnaires. Em...

background: the latest who report indicates that refractive errors are the leading cause of visual impairment throughout the world. the aim of this study was to determine the prevalence of myopia, hyperopia, and astigmatism in 7 yr old children in iran. methods : in a cross-sectional study in 2013 with multistage cluster sampling, first graders were randomly selected from 8 cities in iran. all ...

The purpose of this article is to highlight the challenge of uncorrected refractive error globally, as well as to discuss recent advocacy successes and innovative programs designed to address the need for broader refractive error service development, particularly in developing countries. The World Health Organization's VISION 2020: The Right to Sight program first posed the challenge to nationa...

Universally, refractive error is one of the common causes of visual impairment and blindness [1-3]. A total of about 153 million people have been estimated to be visually impaired from uncorrected refractive errors. Out of out this number, about 8 million are blind [1]. Uncorrected refractive error remains the main cause of low vision globally [4]. Refractive errors that go uncorrected could ha...

CONTEXT The prevalence of visual impairment in the US public has not been surveyed nationally in several decades. OBJECTIVE To estimate the number of US individuals aged 12 years or older who have impaired distance vision due to uncorrected refractive error. DESIGN, SETTING, AND PARTICIPANTS The National Health and Nutrition Examination Survey (NHANES), using a multistage probability sampli...

BACKGROUND To assess the prevalence of vision impairment and refractive error in school children 12-15 years of age in Ba Ria - Vung Tau province, Vietnam. DESIGN Prospective, cross-sectional study. PARTICIPANTS 2238 secondary school children. METHODS Subjects were selected based on stratified multistage cluster sampling of 13 secondary schools from urban, rural and semi-urban areas. The ...

BACKGROUND The USee device is a new self-refraction tool that allows users to determine their own refractive error. We evaluated the ease of use of USee in adults, and compared the refractive error correction achieved with USee to clinical manifest refraction. METHODS Sixty adults with uncorrected visual acuity <20/30 and spherical equivalent between -6.00 and +6.00 diopters completed manifes...