Refraction Eye Exam
Get a precise prescription for glasses. Clear and comfortable vision begins with accurate measurement.
What is a Refraction Exam?
A refraction exam is a vision test that measures how light bends as it passes through your cornea and lens. This precise measurement helps determine your exact prescription for eyeglasses. The test identifies refractive errors such as nearsightedness (myopia), farsightedness (hyperopia), astigmatism, or presbyopia.
- Measures your precise vision prescription needs
- Identifies refractive errors like nearsightedness or astigmatism
- Determines the correct lens power for optimal vision correction
- Helps track vision changes over time
Did You Know?
Refraction testing has been performed for over 150 years. Modern technology has transformed this process from using multiple trial lenses to digital refractometry that provides more precise measurements in less time.
What to Expect
During a refraction exam, your optometrist will determine your precise vision prescription for glasses.
- Visual acuity testing with an eye chart to assess your current vision
- Phoropter testing where you'll look through different lenses and choose which provides clearer vision
- Fine-tuning of your prescription through patient feedback and doctor expertise
Who Needs a Refraction Exam?
Refraction exams are essential for anyone experiencing vision changes or requiring corrective lenses. Regular testing helps ensure your prescription remains accurate as your vision naturally changes over time.
You should schedule a refraction exam if you:
- Need to update your glasses prescription
- Are interested in contact lenses
- Have blurry vision or eye strain
- Experience frequent headaches
- Have trouble seeing at night
- Recently had changes in your vision
- Haven't had an eye exam in a year
- Have a family history of eye diseases
Even if you currently have perfect vision, regular refraction exams are important to detect small changes before they significantly impact your vision quality or cause eye strain.
Frequently Asked Questions
A refraction exam specifically measures how light bends as it passes through your cornea and lens to determine your precise prescription for glasses. A comprehensive eye exam includes refraction plus additional tests to evaluate your overall eye health, including checking for conditions like glaucoma, cataracts, and retinal issues.
A refraction exam is recommended annually. If you wear glasses or contacts, or have conditions that affect your vision, your doctor may recommend more frequent exams.
Vision insurance plans cover refraction exams.