First Time User? Enroll now.
COVID-19: Vaccine information and additional resources | Medicaid: The program is changing and you must take steps to keep your UNC Health providers
Home > Health Library > Dilated Eye Exam
A dilated eye exam lets your eye doctor see the back of your eye (retina). It's usually done as part of a regular eye exam. To do the test, the doctor uses a light and a magnifying tool.
This test is done to look for eye problems and eye diseases. It also can be used to find other problems, such as head injuries or brain tumors.
It's usually part of a regular eye exam. You may also have a vision test and a test for glaucoma.
Tell your doctor if you or anyone in your family has glaucoma. And tell your doctor if you are allergic to any type of eyedrops.
Your doctor will use eyedrops to widen (dilate) your pupils. This makes it easier to see the back of the eye. Your doctor may also use eyedrops to numb the surface of your eyes. It takes about 15 to 20 minutes to fully dilate the pupils.
When your pupils are dilated, your doctor will shine a bright light into your eyes and examine them.
Current as of:
April 29, 2021
Author: Healthwise StaffMedical Review: Kathleen Romito MD - Family MedicineAdam Husney MD - Family Medicine
Current as of: April 29, 2021
Author: Healthwise Staff
Medical Review:Kathleen Romito MD - Family Medicine & Adam Husney MD - Family Medicine
To learn more about Healthwise, visit Healthwise.org.
© 1995-2021 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.