The use of eye drops is a common cause of a harmless change in pupil size. Other medicines that get in the eyes, including medicine from asthma inhalers, can change pupil size. Other causes of unequal pupil sizes may include: Aneurysm in the brain.

What does it mean when one pupil is dilated and the other is not?

Normally the size of the pupil is the same in each eye, with both eyes dilating or constricting together. The term anisocoria refers to pupils that are different sizes at the same time. The presence of anisocoria can be normal (physiologic), or it can be a sign of an underlying medical condition.

Why is one of my pupils bigger than the other all of a sudden?

If a person’s pupils are suddenly different sizes, it is best to seek medical attention. While not always harmful, a sudden change can indicate serious and dangerous medical conditions. It is especially important to seek medical attention if the change occurs after an injury or with other symptoms.

What happens if you use Visine too much?

Do not use in larger or smaller amounts or for longer than recommended. Using the medication too long or too often may worsen your symptoms and cause damage to the blood vessels in your eyes.

Is too much Visine bad for your eyes?

Can you overuse Visine?

Overuse of this type of medication may result in increased eye redness (rebound effect when drug wears off). If this occurs, tell your doctor. Do not use this medication for longer than 3 to 4 days at a time.

How can I reduce the side effects of eye dilation?

To reduce the side effects of eye dilation, take the following steps: Take the rest of the day off work or school so you can rest your eyes. Keep your home darkened until the dilation wears off. Wear sunglasses when you are outside. Avoid driving until all the blurriness resolves.

What does it mean when your eyes are dilated?

Dilation means that the eye muscles of the iris are relaxed, and if they can’t constrict to close the pupil, you likely can’t use your eye muscles to focus on near objects either. But unless you are highly far sighted, your distance vision should feel relatively normal with your glasses or contact lenses on.

How long should I expect to experience eye dilation?

If you are having eye dilation performed for the first time, you should plan to experience dilation for at least six hours. Consider getting a ride home from the doctor, and make sure you have sunglasses to reduce the light sensitivity that is common when your pupils are dilated.

Can you look at the Sun after eye dilation?

Don’t hang out in the sun: You should never look directly at the sun as it can damage your eyes. After dilation, this is even more important to remember. Typically, your pupils will automatically constrict (get smaller) in sunlight to make UV damage less likely.