The Dilated Eye Exam
The view to the back of the eye is limited when the pupil is not dilated. When your pupil is small, an eye doctor can see your optic nerve and macula but the view is limited. In order to see the entire retina, the pupil must be dilated. This is achieved through the use of eye drops.
How Long Does it Take for the Eyes to Fully Dilate?
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Once the drops are administered, it typically takes 15-30 minutes to achieve fully dilated pupils, depending on the person’s response to the medication. |
How Long Does Eye Dilation Last?
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When eyes are dilated during an eye exam, it typically takes 4-6 hours for pupils to return to normal. Some individuals may experience eye dilation that lasts longer. |
How Does it Feel to Have Dilated Eyes?
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Once your eyes are dilated, there is an increase in light sensitivity because the pupil is large and more light is coming through, so bring your sunglasses, or your ophthalmologist may provide some disposable shades for your use. You may also experience blurry vision, particularly if you are trying to read. Some patients feel a “tightening” or different sensation in their eyelids. If it is your first time having your eyes dilated or you know your vision is too impaired for driving after dilation, bring a friend or companion to drive you home from your examination. While in the past there were some eye drops that could reverse the dilation, these are no longer available, so you will have to wait the 4-6 hours before the drops completely wear off. |