Rand Corp., 1982 - Health insurance - 109 pages
The Health Insurance Study (HIS) will use data on impaired vision to study the relationship of health insurance to health status and quality of medical care. Impaired eyesight was selected as a health indicator because it is highly prevalent, easy to measure, and improvable in most cases. This report establishes criteria for measuring the prevalence and adverse effects of vision impairment and it defines criteria for evaluating medical care; it analyzes the data on prevalence and adverse effects among the HIS population; and it verifies that enrollee assignment to different health insurance plans had been random. A medical screening examination and a medical history questionnaire, both administered at the time of enrollment, provided data for this study. Results from the screening examination retesting for near and far vision confirmed that the HIS testing procedures were reliable.
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activity restriction adults better eye chart CM CM coinsurance contact lenses cornea Dayton DISEASE IMPACT QUESTIONS DISTRIBUTION OF RESPONSES enrollment eye chart Eye drops eye impaired eyesight problems fee-for-service plans functional near-vision Functional Vision Impairment Functional Vision Status glasses or contact GLAUCOMA INCREASED PRESSURE Health Insurance Study health status hyperopia i-H i-H impaired far vision impaired vision improvement intraocular pressure level of impairment measure MEDICAL HISTORY QUESTIONNAIRE ment miotics Missing myopia natural far-vision natural near-vision impairment natural vision impairment Number and Percent Number of Persons ocular hypertension optic nerve optotype past 3 months pinhole test population presbyopia prescribed lenses prevalence of impairment prevalence of vision Prevalence Rate recognize a friend refractive errors Responses to Questions rH rH screening examination strabismus Table tonometer tonometry vision deficit vision problems vision test visual acuity wear corrective lenses wear glasses wear lenses