Refractive Error

refractive error The most common eye conditions diagnosed during a comprehensive eye exam involve refractive errors that cause blurry vision for patients. These conditions affect millions of people in the US and often get progressively worse as patients age. Fortunately, refractive errors can be easily treated to let patients enjoy clear vision at all distances.

  • Myopia (nearsightedness) is a vision condition in which nearby objects are clear and distant objects appear blurry.
  • Hyperopia (farsightedness) is a condition in which the eye focuses on distant objects better than on objects closer to the eye, so nearby objects appear blurry.
  • Astigmatism occurs when the cornea is curved slightly in one direction, causing blurred vision.

Test for myopia, hyperopia and astigmatism

Eye exams test for myopia, hyperopia and astigmatism and help your optometrist provide a proper prescription if eyeglasses or contact lenses are needed. Eyewear may be used for certain activities, like watching television or driving, or may be worn at all times.

Alternatively, corneal modification procedures such as refractive surgery (LASIK, ASLA, etc.) may improve vision quality.


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