Getting your eyes dilated is an important part of any complete eye exam. Once your doctor puts in the dilating drops, it takes about 20–30 minutes for your pupils to fully open, or dilate. After your eyes are fully dilated, the effects will last for four to six hours for most people.The effects of dilating eye drops last a few hours. ... It may not be safe to drive yourself after having your eyes dilated. You should make arrangements to have someone drive you after your appointment. If you have any questions before or after a dilated eye exam or procedure, be sure to speak with your eye doctor.Is there an eye drop to reverse the result of eye dilation drops? Answer: Yes, there is a dilation reversal drop available. It is not commonly used because its effects are not profound — it shortens the period of dilation but not by much and they can cause redness and burning.Pilocarpine can be associated with retinal tears and detachments. ... Although pilocarpine is rarely used to treat glaucoma, it is still used for diagnostic testing of a dilated pupil, therapeutic miosis, and reversal of pupillary dilation.

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