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Refraction test


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Refraction test

Alternative Names:

Eye test - refraction; Vision test - refraction
Normal Values:

A normal value is 20/20 vision (perfect vision -able to read 3/8 inch letters at 20 feet). A small type size is also used to determine normal near vision.


What abnormal results mean:
  • Myopia (nearsightedness)
  • Hyperopia (farsightedness)
  • Astigmatism (asymmetrical cornea)
  • Presbyopia (inability to focus on near objects that develops with age)
Additional conditions under which the test may be performed:

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).
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