How To Prepare
No special preparation is needed before having this test.
Your health professional may use eyedrops to widen (dilate) your
pupils. This makes it easier to see the back of the eye. The eyedrops take
about 15 to 20 minutes to dilate the pupil fully. Your health professional may
also use eyedrops to numb the surface of your eyes. Tell your health
professional if:
- You or anyone else in your family has
glaucoma.
- You are allergic to dilating or
anesthetic eyedrops.
You may have trouble focusing your eyes for several hours after the
test. You may wish to arrange to have someone drive you home after the test.
You also will need to wear sunglasses when you go outside or into a brightly
lit room.
Talk to your health professional about any concerns you have
regarding the need for the test, its risks, how it will be done, or what the
results may indicate. To help you understand the importance of this test, fill
out the
medical test information form
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