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portada National Health and Nutrition Examination Survey (NHANES): Vision Procedures Manual
Type
Physical Book
Author
Publisher
Language
English
Pages
118
Format
Paperback
Dimensions
25.4 x 17.8 x 0.6 cm
Weight
0.22 kg.
ISBN13
9781499269789
Categories

National Health and Nutrition Examination Survey (NHANES): Vision Procedures Manual

Centers for Disease Cont And Prevention (Author) · Createspace · Paperback

National Health and Nutrition Examination Survey (NHANES): Vision Procedures Manual - And Prevention, Centers for Disease Cont

New Book Imported to Taiwan
Delivery: 28 Aug - 11 Sep Shipping: 17 to 21 business days.
NT$ 1,055
NT$ 1,055

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Synopsis "National Health and Nutrition Examination Survey (NHANES): Vision Procedures Manual"

The vision examination is designed to test distance vision, measure refractive error, measure the shape of the cornea and, if applicable, measure the distance eyeglass prescription in SP's aged 12 years and older. Near vision will be tested in SPs over 50 years of age. Vision loss is common in adults and prevalence increases with advancing age. Approximately 13 percent of individuals 65 years of age or older and 28 percent of those over 85 years of age report some degree of visual impairment. In children, refractive errors are the most common vision disorders, occurring in 20 percent by 16 years of age. More than 90 percent of older people require the use of corrective lenses at some time. Visual disorders in older adults frequently lead to trauma from falls, automobile crashes, and other types of unintentional injuries. Many adults are unaware of decreases in their visual acuity, and up to 25 percent may have incorrect corrective lens prescriptions.

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