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| Refractive Error
Refractive error is the term given to the blur caused by light entering the eyeball that does not focus perfectly onto the retina (the inner lining of the back of the eye). The refractive error is what optometrists or ophthalmologists measure during an eye examination to determine the prescription for spectacles or contact lenses.
Light entering the eyeball is refracted or bent mainly by the cornea (clear covering of the eye) and the crystalline lens (natural lens inside the eyeball). ...Read More | | |
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