Astigmatism and emmetropization in a native american population
نویسندگان
چکیده
منابع مشابه
Prevalence of astigmatism in Native American infants and children.
PURPOSE To describe the prevalence of high astigmatism in infants and young children who are members of a Native American tribe with a high prevalence of astigmatism. METHODS SureSight autorefraction measurements were obtained for 1461 Tohono O'odham children aged 6 months to 8 years. RESULTS The prevalence of astigmatism >2.00 diopters was 30% in Tohono O'odham children during infancy (6 m...
متن کاملEffects of optically imposed astigmatism on emmetropization in infant monkeys.
PURPOSE Although astigmatism is prevalent during early infancy, the influence of astigmatism on early refractive development is unclear. This study was undertaken to determine the effects of astigmatism on emmetropization in monkeys. METHODS Infant rhesus monkeys (n = 39) were exposed to optically simulated astigmatism in one or both eyes from approximately 1 to 4 months of age. With-the-rule...
متن کاملpatterns and variations in native and non-native interlanguage pragmatic rating: effects of rater training, intercultural proficiency, and self-assessment
although there are studies on pragmatic assessment, to date, literature has been almost silent about native and non-native english raters’ criteria for the assessment of efl learners’ pragmatic performance. focusing on this topic, this study pursued four purposes. the first one was to find criteria for rating the speech acts of apology and refusal in l2 by native and non-native english teachers...
15 صفحه اولDevelopmental changes in anterior corneal astigmatism in Tohono O'odham Native American infants and children.
UNLABELLED ABSTRACT Purpose: To describe change in corneal astigmatism in infants and children of a Native American tribe with a high prevalence of astigmatism. METHODS Longitudinal measurements of corneal astigmatism were obtained in 960 Tohono O'odham children aged 6 months to <8 years. Change in corneal astigmatism (magnitude (clinical notation), J0, J45) across age in children with high a...
متن کاملRisk factors for polydrug use in a Native American population.
The Diagnostic Interview Schedule was used in 1993-1995 to collect information on the use of alcohol and other substances from 1,086 Navajo Indians living on or near their reservation in the southwestern United States. Bivariate and multivariate analyses are used to show that age of first alcohol use has declined over the past 50 years and is a significant risk factor for both alcohol dependenc...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2010
ISSN: 1534-7362
DOI: 10.1167/3.12.18