• Howstuffworks "How Contact Lenses Work"
  To the millions of Americans with vision problems, the world can be a blurry place. For people who need vision correction but don't want to wear glasses, contact lenses offer an easy, virtually invisible solution. Learn how contact lenses correct sight, look at the variety of lens options that are available and find out how to wear them safely.
  in Learn with americans blurry millions people place problems vision world

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