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Validity of a Survey Question as a Measure of Visual Acuity Impairment
Survey questions are frequently used to collect data on the prevalence of vision difficulties. The 1971-1972 Health and Nutrition Examination Survey included both a question about “trouble with your vision even when wearing glasses or contact lenses,” and clinical measurement of central distance vis...
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| Autori principali: | , |
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| Natura: | Artigo |
| Lingua: | Inglês |
| Pubblicazione: |
1983
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| Soggetti: | |
| Accesso online: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1650443/ https://ncbi.nlm.nih.gov/pubmed/6848004 |
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