What happens when the pupils change size what if they remain large and why does large?

What happens when the pupils change size?

The pupils are the black circles in the center of the eyes. They control the amount of light that enters the eye. When the pupils are large, more light enters the eye, and when the pupils are small, less light enters the eye.

The pupils change size in response to changes in light levels. In bright light, the pupils get smaller to protect the retina from too much light. In dark light, the pupils get larger to allow more light to enter the eye.

The pupils also change size in response to emotions. When a person is excited or scared, the pupils may get larger. When a person is relaxed or tired, the pupils may get smaller.

What if the pupils remain large?

If the pupils remain large even in bright light, it could be a sign of a medical condition. Some of the conditions that can cause the pupils to remain large include:

* Adie's tonic pupil: This is a rare condition that affects the nerves that control the pupils. People with Adie's tonic pupil may have difficulty seeing in bright light, and their pupils may be slow to react to changes in light levels.

* Horner's syndrome: This is a condition that affects the nerves that control the muscles of the face and eye. People with Horner's syndrome may have a drooping eyelid, a smaller pupil on the affected side, and difficulty sweating on the affected side of the face.

* Paralytic mydriasis: This is a condition that occurs when the muscles that control the pupils are paralyzed. People with paralytic mydriasis may have difficulty seeing in bright light, and their pupils may not react to changes in light levels.

If you notice that your pupils are remaining large even in bright light, it is important to see a doctor to rule out any underlying medical conditions.

Why do pupils get large?

There are a few reasons why pupils get large. Some of the most common reasons include:

* Bright light: In bright light, the pupils get smaller to protect the retina from too much light.

* Emotions: When a person is excited or scared, the pupils may get larger.

* Drugs: Some drugs, such as cocaine and LSD, can cause the pupils to get large.

* Medical conditions: Some medical conditions, such as Adie's tonic pupil, Horner's syndrome, and paralytic mydriasis, can cause the pupils to remain large even in bright light.

If you notice that your pupils are getting large for no apparent reason, it is important to see a doctor to rule out any underlying medical conditions.