Why is my pupils always big

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Infection, injury, diabetes , and migraines can cause this nerve damage, and people can also be born with it. Damage to the brain can cause increased pressure within the brain, which can affect eye health and damage nerves. Pressure can come from physical trauma or internal brain damage, such as a stroke. Researchers are using the practice of pupillometry or measuring the size of the pupils to analyze emotions and intellectual tasks that make the pupils dilate and constrict.

The characteristic symptom of mydriasis is dilated pupils that do not get bigger or smaller in response to changes in light. When the pupils are dilated, the eyes become more sensitive to light. This can lead to blurry vision, as well as, in some cases, a general feeling of constriction around the forehead and eyes.

Some individuals may also experience headaches, dizziness, eye irritation, and have trouble sleeping along with mydriasis. Many instances of mydriasis, particularly those caused by a reaction to plants or medication, will go away on their own, often within a few hours or days.

Individuals with mydriasis will be extra sensitive to light, as long as their pupils are dilated. It is best for the individual to wear sunglasses when outside and stay away from bright lights. It is also a good idea to limit driving, as much as possible. If a person develops mydriasis after taking medication, they should avoid taking that drug in the future.

They may be able to discuss finding an alternative treatment with the doctor who prescribed the drug. Treatment for mydriasis is determined by what caused the condition in the first place. Treatment approaches will try to protect the full functionality of the eyes. For example, if pupil dilation is caused by a reaction to medication, even though several drugs could quickly get the pupils back to normal size, many providers would simply recommend waiting for the effects of the drug to wear off and avoiding it in the future.

When mydriasis is caused by injuries to the brain and eyes, more intense treatments come into play. Ask an Ophthalmologist. Browse Answers. Medical disclaimer By submitting your question, you agree to be answered by email. Question Required. Email address Required. Enter a Valid email address. Close Submit. Related What is the importance of fundoscopy?

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