![]() If the measurement has a minus (-) before it, you are nearsighted and have trouble seeing things in the distance. You will get a separate diopter value for each eye – often one eye is slightly weaker than the other. This describes, in a measure called diopters, the refractive power of your new glasses or contacts. If you are nearsighted (anything worse than about 20/50 vision), your optometrist will write you a prescription to improve your long distance vision. Incidentally, eagles have natural vision of 20/2 – hence the expression eagle eye, which means an exceptional eye for detail. Some fighter pilots use eye exercises to attain 20/10 vision, while the world record belongs to a man naturally achieved 20/8 focus by training his eyes for better vision. But there is nothing stopping people from being above average and gaining better than 20/20 vision. Yes, it is possible – having 20/20 focus is merely the average visual acuity for a healthy human being. For instance, if you have 20/100 vision, it means that other people can see clearly from 100 feet away, what you can only see at 20 feet. This measure only really becomes important when people stray from the norm. ![]() This is a benchmark measure of what you should be able to see at a distance of 20 feet. The average human being with healthy eyesight has 20/20 focus. But what does it mean? And how does it convert to the lens prescription your optometrist gives you, measured in diopters? By the end of this article you’ll be an expert on the definition and understanding of 20/20 eyesight. We all hear the term 20/20 vision thrown about to mean anyone who has healthy eyesight. Home > Vision Articles > What Is 2020 Vision What is 20/20 Vision? How to Convert Diopters to a 20/20 Measure
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