No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
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Review
MeSH terms
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Eyeglasses*
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Humans
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Optometry / methods*
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Postal Service / statistics & numerical data*
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Prescriptions / statistics & numerical data*
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Refraction, Ocular / physiology*
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Refractive Errors / physiopathology
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Refractive Errors / therapy*