- How it Works
May 17, 2019
Chances are, you’ve probably seen an eye chart. Hanging up at your eye doctor’s office, your primary care physician’s office, and even at the nurse’s office in your child’s school, they are everywhere. You may be wondering whether all of these eye charts are the same, and what they actually do.
Eye charts help your eye doctor measure your visual acuity—how sharp or blurry your vision is. Based on your test results using the chart, your eye doctor can tell you whether you need eyeglasses, contact lenses, or another form of eye correction.
There are many other non-standardized eye charts, including the ETDRS chart, Landolt C chart, and Lea Symbols, which are used less frequently because they have not been proven to reliably determine visual acuity.
You no longer have to visit an eye doctor to take an accurate vision test. Check out EyeQue’s home vision testing products. The VisionCheck is great for adults and gives you EyeGlass Numbers that you can use to order eyeglasses online. Insight is great for families with children. You can test for visual acuity, contrast sensitivity, and even color blindness.
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