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Vision Correction for Refractive Errors:


A refraction from an eye care practitioner helps determine the type and degree of refractive error, which may be addressed with glasses, contacts, or refractive surgery.

An eye care practitioner has various methods of determining refractive errors in an eye, including use of this phoropter fitted with various lenses.
Eyeglass lenses and contact lenses are fabricated with precise curvatures that help offset flaws in our eye's optical system. These lenses intercept and bend light rays, such that they achieve a more precise point of focus on our eye's retina.
Many vision correction surgeries such as LASIK also aim to correct refractive errors by changing the shape of our eye's front surface (cornea), so that light rays are bent into a more accurate point of focus.





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