Eye dilation typically takes about 20 to 30 minutes after the drops are administered for the pupils to fully open. Once fully dilated, the effects usually last between 4 to 6 hours for most people
. However, the duration can vary widely depending on factors such as eye color (lighter eyes tend to stay dilated longer), age, and the type of dilating drops used. In some cases, especially in children or people with lighter- colored eyes, dilation effects can last up to 24 hours or even longer
. During this time, common side effects include light sensitivity, blurry vision, and difficulty focusing on close objects. It is advised to wear sunglasses to protect your eyes from bright light and to avoid driving or performing tasks requiring clear vision until the effects wear off
. In summary:
- Time to full dilation: 20–30 minutes
- Typical duration: 4–6 hours
- Possible extended duration: up to 24 hours or more in some individuals
- Side effects: light sensitivity, blurry vision, trouble focusing
- Precautions: wear sunglasses, avoid driving until vision normalizes
