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An unread, unused copy: no writing or highlighting, and no missing or damaged pages. Every book we sell is brand new, including our lowest-priced titles.
Exercise your vision while having fun with 35 optical illusions (stereograms). In this book, you'll learn how to view a stereogram and the functional practice of positioning your eyes for best results. Each stereogram explains the health benefits of these fun exercises with a touch of humor.
A perfect gift option that will improve your vision without you even realizing you're exercising your eye muscles.