It’s widely
known that LASIK eye surgery can give some patients 20/20 vision. But what does
20/20 vision really mean?
According to
the American Optometric Association, “20/20 vision
is a term used to express normal visual acuity (the clarity or sharpness of
vision) measured at a distance of 20 feet. If you have 20/20 vision, you can
see clearly at 20 feet what should normally be seen at that distance.”
There are
varying degrees of vision based on what research has shown that a “normal”
person can see. Other examples include:
·
20/10 vision
means that you can see at 20 feet what can normally be seen when standing 10
feet away (your vision is better than normal)
·
20/40 vision
means that you have to stand 20 feet away from something to see what you should
be able to see at 40 feet away (your vision is worse than normal)
·
20/100
vision means that what should be normally seen at 100 feet away requires you to
stand 20 feet away to see it (your vision is poor)
·
20/200
vision is considered legal blindness in the United States
Having 20/20
vision does not mean you have perfect vision because other factors, such as
peripheral vision, depth perception, color vision, eye coordination and
focusing ability play into your overall visual attributes.
If you have less-than-ideal eyesight that causes you to need
glasses or contacts to correct your nearsightedness (good close-up vision/bad
distance vision), farsightedness (good distance vision/bad close-up vision) or
astigmatism (impaired distance and close-up vision), LASIK may help correct
your refractive error and put you into the “normal” 20/20 vision range. LASIK
surgeons take into consideration many of your unique attributes before
recommending LASIK surgery, including your overall eye health, corneal
thickness and medical history.
To find out if LASIK might be able to give you 20/20 vision, contact Charleston
Cornea & Refractive Surgery to schedule your
free LASIK Consultation. Call 843-856-5275 or visit charlestoncornea.com.
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