Ask a lth Professional (715) 732-2101 Andrew Congdon 3003 Cleveland Ave. Marinette, w Doctor of Optometry INSIGHT b VISION CENTER O D Question: What does 20/20 mean? Contrary to popular stand 200 feet behind you and e belief, having 20/20 see that same sized letter, 300 vision doesnt mean feet are in a football field If you you have perfect vision. 20o is are correctable to anything the mathematical average that better than 20/200, then you are every human should be able not legally blind. You cannot to see. If you have 20/2o vision, be legally blind if you take that means that your day to your glasses off, because the day tasks should be visually easy definition is seeing worse than to accomplish. But what does 20/200 with correct 20/20 mean exactly? On the flip side, you can have Breaking down the numbers better than 2020 vision too! You will explain exactly what 20/20 may have 20h5 vision, which means. The numerator, or first means that you would stand 20 number, is the number of feet feet away from a letter and other ou would be standing from people would have to move up a letter that is a particular size to 15 feet to see that same The denominator, or second Most eye charts will go as far as number, is where the average 20ho person would have to stand see the same sized letter fvco they do not are 20/20, that means you stand at 20 feet away from since it is in feet. Rather, the a letter, the average person Their 20/zoisactually 6/6 meters could stand right next to you The 20/2o letter E should be 13 and see that same letter. If you inches large if the screen is In other countries, use 20/20 as a measurement use the metric system in meters. would mean feet away, Some that if you stood at 20 feet, the eye exam theletters are actually smaller use mirrors to artificially make are average person could stand at rooms are shorter than 20 feet 40 feet and read that same letter. than 1z inches. Another way to o feet and read that same letter. government to be able to rive make an exam room bigger is to a car without glasses Most eye the letters look 2o feet away surgeries will not be done on our eyes if you are better than 2o/2o is the average that the uo if you want your insurance to pay for it. normal person should be able to see. For this reason, most pairs The definition of legally blind of glasses are made so that you is 20/200 in the better seeing can see the 2020 line Generally u arelikely able to see the on it you were stand at 20 feet to see a letter. eyes open if each eye is 20/20 and the average person could individually