Tell your eye doctor about your eyesight - how well you can perform daily activities and any problem areas you’ve noticed in the past. The first step to maximizing the clarity and comfort of your vision is to see a qualified optometrist or ophthalmologist for a comprehensive eye exam. alone, more than 190 million adults use some form of vision correction to improve their eyesight. Only light focused on a small and sensitive portion of the central retina, called the macula, influences the measurements you get during an eye exam. The brain’s ability to interpret the information it receives from the eyes The sensitivity of the nerves in the retina and vision centers in the brain How accurately the cornea and lens focus light onto the retina Inside your eyes and brain, three major factors determine how sharp your vision is: Objects that are similar in brightness to their background Your eye doctor or an assistant will use an instrument to show you choices of lenses to sharpen your eyesight.įor example, acuity can’t predict how well you can see: Those with 20/200 eyesight can only read the single large letter at the top of a Snellen chart. Some notable measurements (after correction) include:Ģ0/15 – Most young people with healthy eyes have 20/15 vision, or even slightly better.Ģ0/40 – The lowest measurement required by most states to get an unrestricted driver’s licenseĢ0/200 – People with 20/200 vision or lower are considered legally blind. Not many people have 20/10 vision, and birds of prey are some of the only animals thought to have 20/5 vision. 20/10 is even better, and 20/5 is sharp as a tack.Ĭan’t quite achieve 20/10 or 20/5 vision? Don’t beat yourself up. 20/20 simply means your vision is "normal."Ģ0/15 vision is slightly better than 20/20. Yes! It’s easy to think that 20/20 vision is the best - but it actually isn’t.
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SEE RELATED: Measure your visual acuity with a free printable Snellen chart Is anything better than 20/20 vision? The last line the patient can read determines their visual acuity measurement. A Snellen chart is the one with one big letter at the top (usually an “E”) and rows of gradually smaller letters below it.ĭuring one of these tests, the patient will cover one eye and, starting at the top, read as far down as they can before the letters get too hard to read. Visual acuity is tested one eye at a time, with the help of a standardized Snellen eye chart.Ī Snellen eye chart is a popular method eye doctors use to determine visual acuity.
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