Vision In Nhanes

国家健康和营养检查调查是一项正在进行的、全国性的、全面的健康调查，对象是美国非制度化的平民人口。1999年增加了一项远景评估，目前仍在继续。所有12岁以上的样本都要接受视力评估，其中包括测量佩戴眼镜的人的眼镜处方，测试戴眼镜和不戴眼镜的样本的远距离视力(眼镜/隐形眼镜)和客观屈光度(还包括评估眼睛的角膜曲率)。对50岁及以上的人进行近视视力评估。此外，还收集了与视力相关的功能性测量的个人访谈数据，对象是49岁以上的人。NHANES中视力部分的数据将被用来估计美国人群中视力损害的流行率，描述美国人群中屈光不正的分布，评估视力丧失对功能能力的影响，并将视觉损害与其他健康和疾病指标联系起来。患病率数据将被用作2010年健康人视力目标的基线衡量标准。 数据收集工作正在进行中。VISION面谈方案已进一步完善，以更好地评估严重视力损害的频率，特别是与那些后来因各种原因没有参加在流动单位进行的视力检查部分的人有关。同样在2005年生效，在对所有20岁以上的研究参与者进行家庭访谈时，将询问有关功能视力的问题。 自1999年以来收集的视力数据尚未由国家卫生统计中心发布用于分析目的。经过密集的质量控制工作，在1999-2002年期间收集的视力数据预计将于2004年晚些时候公开发布。

The National Health and Nutrition Examination Survey is an on-going, national, comprehensive health survey of the civilian, non-institutionalized US population. A vision assessment was added in 1999 and is on-going. All sample persons aged 12+ years undergo a vision assessment in which measures of the eyeglass prescription in people who wear glasses for distance, tests the distance visual acuity of sample persons with and without correction (glasses/contacts) and an objective refraction (incorporating also an evaluation of the corneal curvature of the eye) are obtained. A visual acuity at near is assessed in persons age 50 years and over. In addition, personal interview data on functional measures related to vision are collected on people over the age of 49 years. Data from the vision component in NHANES will be used to estimate the prevalence of visual impairment in the U.S. population, describe the distribution of refractive error in the U.S. population, evaluate the impact of vision loss on functional abilities, and relate visual impairment to other health and disease measures. The prevalence data will be used as baseline measures for a vision objective in Healthy People 2010. Data collection is on-going. The vision interview protocol has been further refined to better assess the frequency of severe visual impairment, particularly as it relates to those who, for various reasons, subsequently do not participate in the vision examination component as conducted in the mobile units. Also effective in 2005, questions on functional vision will be asked during the home interview of all study participants over age 20 years. Vision data, collected since 1999, have not yet been released by the National Center for Health Statistics for analytic purposes. After intensive quality control efforts, a public release of vision data collected over the 1999-2002 time period is projected to occur later in 2004.