Empty
Click + to add content

What is a Refraction?

06 Jul, 2020 |

What Is an Eye Refraction Test?

The refraction test, also called eye test or vision test, is a simple procedure performed by an eye doctor to check a person's eyesight. The refraction test determines the prescription of contact lenses or eyeglasses.

Procedure

  • The eye doctor asks the patient to read from a chart (around 20 feet away) while looking through a refractor (or phoroptor). The doctor changes the lenses in the refractor to choose the one that best suits the patient.

Considerations

  • People who have vision problems should take the test every two to three years to determine if they need a new prescription. People over the age of 40 should take the test more frequently.

Normal Result

  • The normal result of the refraction test is 20/20 vision, which means that the person has perfect vision.

Abnormal Results

  • An abnormal result may mean that the person has one of the following vision problems: nearsightedness, farsightedness, astigmatism, or presbyopia.

Other Conditions

  • The refraction test can also help the eye doctor determine if the person suffers from the following: ulcers or infections of cornea, detached retina, damaged retina, macular degeneration or blockage of blood flow to the retina.

Related

Arctic Macular Risk Test

Our patient's vision is a priority at North Bay Eye Associates. We provide care for residents in...

Read More >

Choosing The Right Glasses

Choosing the Right Glasses at North Bay Eye AssociatesHere at North Bay Eye Associates, we carry a w...

Read More >

The Importance of Sunglasses During Winter

The Importance of Sunglasses During WinterIn the winter, your eyes need the protection of sunglasses...

Read More >

Vital Tears

"Tears are the nobel language of eyes, and when true love of words is destitute. The eyes by te...

Read More >

Sports Eye Safety

When playing your favorite sport, protecting your body from injuries should be a top priority. Many ...

Read More >

Clinical Research, an integrated care option for many patients.

At NBEA we view Clinical Research as an integrated care option for many of our patients. Studies ind...

Read More >