Optometry 2019

Refractive Errors

Refractive error means that the shape of the eye does not bend light correctly, resulting in a blurred image. The main types of refractive errors are myopia (nearsightedness), hyperopia (farsightedness), presbyopia (loss of near vision with age) and astigmatism. Refractive disorders are commonly treated using corrective lenses such as eyeglasses or contact lenses. Refractive surgery (such as LASIK) can also be used to correct some refractive disorders.  Presbyopia, in the absence of any other refractive error, can sometimes be treated with over-the-counter reading glasses. There is no way to slow down or reverse presbyopia. A refractive error can be diagnosed by an eye care professional during a routine eye examination.Testing usually consists of asking the patient to read a vision chart while testing an assortment of lenses to maximize a patient’s vision. Special imaging or other testing is rarely necessary.