35% of adults have 20/20 vision without the help of corrective lenses. If you are part of that percentage, you may think visiting the optometrist for an annual eye exam is unnecessary. In fact, not getting regular checkups can be putting your vision and overall health at risk. Read on to know why everyone needs annual eye exams.
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The Snellen eye chart is a diagram of different-sized letters that you see at your eye doctor’s office. Interestingly, it’s been around for over 150 years and helps determine the strength of your eyesight. The chart also indicates if you meet the legal vision requirement to obtain a driver’s license. Here’s a look at the history of the Snellen Eye Chart, how it’s used, and what it means to have 20/20 vision.
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