
LASIK laser eye surgery surgeons aim for 20/20 LASIK laser eye surgery or better so you can perform most daily activities without eye glasses or contacts. However, some patients still need reading glasses or corrective lenses for some activities after surgery. Most people who have LASIK will have better vision without eye glasses after LASIK laser eye surgery procedure, but LASIK laser eye surgery does not guarantee perfect vision.
Approximately 56% of all patients achieve results of 20/20 or better and over 90% achieve 20/40 or better (which is good enough to drive without corrective lenses in most regions) according to a recent study. Patients need to realize that 20/20 vision after LASIK laser eye surgery may be different from 20/20 vision with eye glasses or contact lenses before LASIK laser eye surgery. Images seen through LASIK treated eyes are often referred as not being as "crisp" in vision as those seen through glasses or contact lenses. This condition "loss of contrast sensitivity," is referred as: LASIK vision 20/20. While visual acuity (20/20, 20/40, etc.) is a useful measure for clinical vision test, it may not be the only measure of vision. For instance, eye charts do not assess sensitivity to different shades of gray, how your vision is affected at night or in dim light, or how effectively your eyes change and maintain focus. While the majority of patients do adjust to this change following LASIK laser eye surgery, patients who perform fine detail work (artists, architects, surgeons) should be aware of this condition and to carefully weigh advantages LASIK laser eye surgery can afford against the potential side effect of LASIK laser eye surgery - loss of contrast sensitivity. We need to understand that 20/20 does not mean "perfect" vision and achieving this 20/20 should not be the sole purpose of LASIK laser eye surgery. The goal of refractive surgery in most cases is to reduce a person's dependence on prescription eye glasses or contact lenses.

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