How long should your eyes stay dilated after an eye exam?

6-48 hrs: Depending on the drops used. The most common drop tropicamide has a dilating effect of 4-8 hrs. Next is cyclogyl (cyclopentolate) 24-48 hrs. Rarely other longer acting drops are used in regular exam. If you are stays dilated more than 48 hrs contact your eye doctor.

Depends: This can vary from one hour to up to three days. This depends on the number of different drops and a person's sensitivity. This can also depend on on iris color. Children can even have it last for up to seven days.

Usually 6-8 hours: It depends on what type of drops are used. Phenylephrine and tropicamide are probably the most commonly used at the optometrist or ophthalmologist's office and they last about 6-8 hours in the average person, although they can last a bit longer. Other drops like cyclopentolate last up to 24 hours and Atropine can last for 14 days.

3 hours: Takes about three hours to return to normal.

2-4 hours: Is typical, but occasionally the dilation lasts longer, even up to a day. Reversal drops are available to counter some of the effects of dilation, but time is the only sure end to it.