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Normal Vision?

POSTED ON February 3, 2010

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Thursday afternoon in my Astronomy course, I sat with a friend of mine who happens to be color blind. Now, if you know anything about astronomy you’ll probably note that it has a lot to do with the visible light spectrum, the spectrum of colors that appears when white light is broken down by a prism (ROY G. BIV ring a bell?). Anyway, as we were viewing the array of ...

Thursday afternoon in my Astronomy course, I sat with a friend of mine who happens to be color blind. Now, if you know anything about astronomy you’ll probably note that it has a lot to do with the visible light spectrum, the spectrum of colors that appears when white light is broken down by a prism (ROY G. BIV ring a bell?). Anyway, as we were viewing the array of colors produced by various elements, my friend turned to me and said “this would be so much easier if I had normal vision.”

Normal vision? What does that even mean? Being able to see colors? Getting a regular eye examination? Not having to buy eyeglasses? There are so many dimensions to “normal vision” that it’s hard to decide what exactly that constitutes. 

The truth is, “normal vision” does not mean “perfect vision.” According to the Vision Council of America, over 75% of the population wears some sort of corrective lenses. This means, the norm is not perfect vision, but corrected vision. However, normal vision can go awry relatively quickly without having regular eye exams. But, if you follow the simple rule “Check yearly. See Clearly.” you can count on having true normal vision for a long time.

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