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Discover 20,938 clinical trials near Ohio. Find research studies in your area.
Showing 20241-20260 of 20,938 trials
NCT00893217
The purpose of this study is to valuate safety and tolerability of Betaseron.
NCT00009529
To examine the effects of rigid gas permeable contact lenses on the progression of myopia (nearsightedness) in children To determine what changes in the eyes cause certain eyes to progress in nearsightedness more slowly
NCT00038753
To identify vision-screening tests that can accurately predict those three- and four-year old preschoolers who would benefit from a comprehensive vision examination because of signs of amblyopia, strabismus, and/or significant refractive error.