![]() (This also means that someone with 20/40 vision has eyesight that is only half as good as normal―20/20.) Your Eyeglass Prescriptionįor anyone that has gone to an ophthalmologist or optometrist for a vision test or updated prescription, you have probably been handed a piece of paper with a whole bunch of confusing numbers on it and have been told that is your prescription. However, someone with 20/40 vision sees at 20 feet away what a normal person sees at 40 feet away. Someone with perfect vision (20/20) would be able to see the same line of letter from 20 feet away that a normal person sees at 20 feet away. This popular vision test requires people to stand 20 feet away from a piece of paper that features letters in a progressively smaller size on each line. If you have ever stood at the doctor’s office and been asked to read off letters or numbers (or for children, look at objects) that are placed far ahead of you, you have likely seen the Snellen Chart. To help you better understand your prescription and the different levels of visual acuity, today we are looking closer at the different methods of vision prescriptions that your eye doctor may discuss with you during an annual eye examination for prescription lenses. (Those lucky people!) However, aside from the fact that it means perfect vision, do you actually know what 20/20 vision means and represents? Many people, even those who may have their own eyeglasses prescription, do not! If someone tells you that their eyes are 20/20, they do not need any kind of prescription eyeglasses, contact lenses or LASIK surgery in order to see clearly each and every day. Getting a better understanding of what your vision prescription means.Įveryone knows that the term “20/20” often means perfect vision.
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