BACKGROUND This study determined the importance of including tests for refractive errors in vision screening. METHODS In this cross-sectional study, we performed a random cluster sampling of schoolchildren in the city of Dezful, Iran. After sampling and obtaining informed written consents from their parents, children underwent examinations at the school sites. Students underwent tests of visu...

PURPOSE The purpose of this study was to determine the testability of the "Co or Vision Testing Made Easy" color vision test, marketed as a screening test for young children, in a population of individuals with mental retardation. The test uses simple geometric figures that are easily identified. Previously, the test has demonstrated validity as a measure of color deficiency. METHODS The test...

IMPORTANCE Low-socioeconomic urban children often do not have access to ophthalmic care. OBJECTIVE To characterize the demographic characteristics and ophthalmic conditions in children attending Give Kids Sight Day (GKSD), an outreach ophthalmic care program held annually in Philadelphia, Pennsylvania, providing vision screening and immediate treatment when needed. DESIGN, SETTING, AND PART...

OBJECTIVE Myopia is emerging as a public health problem in school going children. Prevalence of myopia differs in different geographical areas, race, ethnic groups and socioeconomic background. Purpose of this study was to find out myopia prevalence in schoolchildren from very high mountain region of Nepal. MATERIALS AND METHODS It was a cross sectional descriptive study. Vision screening was...

PURPOSE To examine the relative prevalence of ocular conditions among children who are unable to perform preschool vision screening tests and the impact on measures of screening test performance. METHODS Trained nurse and lay screeners each administered a Lea Symbols visual acuity (VA) test (Good-Lite, Inc., Steamwood, IL), Stereo Smile II test (Stereo Optical, Inc., Chicago, IL), and Retinom...

BACKGROUND Communication is an integral part of human behaviour. Communication disorders are associated mainly with impairment in hearing, vision, and/or speech, which influences the ability to receive, comprehend, produce, and express verbal, nonverbal, and graphic information. When unrecognized and unmanaged, these very often "invisible" conditions can have a significant detrimental effect on...

Driving is the primary means of personal travel in many countries and relies heavily on vision for its successful execution. Research over the past few decades has addressed the role of vision in driver safety (motor vehicle collision involvement) and in driver performance (both on-road and using interactive simulators in the laboratory). Here we critically review what is currently known about ...

OBJECTIVES To estimate the prevalence of poor vision in children aged 4-5 years and determine the impact of visual acuity on literacy. DESIGN Cross-sectional study linking clinical, epidemiological and education data. SETTING Schools located in the city of Bradford, UK. PARTICIPANTS Prevalence was determined for 11,186 children participating in the Bradford school vision screening program...

AIM To determine the relation between perceived driving disability and vision screening tests. METHODS 93 subjects, aged 50 years and over, with binocular visual acuity of at least 20/80. Perceived driving disability (PDD) was assessed by a questionnaire. Subtracting daytime from night-time driving question scores revealed PDD at night (PDDN), subtracting scores of questions for driving in fa...

OBJECTIVE In this correlational study of adults receiving occupational therapy who sustained a cerebrovascular accident (CVA), the relationship between basic visual functions (including acuity, visual field deficits, oculomotor skills, and visual attention or scanning) and higher level visual-perceptual processing skills (e.g., visual closure and figure-ground discrimination) was investigated. ...