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A 25-year-old female asked:

what would cause the pupil to be constricted all of the time?

3 doctor answers6 doctors weighed in
Dr. David Duhon
Sleep Medicine 35 years experience
Causes of miosis: Pupillary constriction is called miosis. I presume it is just one pupil. There are multiple potential causes, some benign, and some indicating a dangerous condition. If the miosis is of recent onset, i advise a trip to the er. If it has been present for a while (months to years), you should see a neurologist or an opthalmologist. Don't ignore it.
Dr. Jay Bradley
LASIK Surgery 18 years experience
Many things: Pupillary asymmetry needs evaluation. Many issues can make a pupil smaller or make the fellow pupil larger, resulting in asymmetry. See an eye doctor for further evaluation.
Dr. Jon Fishburn
Ophthalmology 30 years experience
Exam to know: An exam would be helpful in this case. There are several possibilities. Aide's tonic pupil ( dilated then constricted ), horner's syndrome, argyll-robertson, pharmacological, poisons, neurological, hereditary, to name a few.

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Similar questions

A 38-year-old member asked:

Is there a way to undo the dilation to my pupils after speed?

1 doctor answer1 doctor weighed in
Dr. Ankush Bansal
Internal Medicine 17 years experience
Nope: The easy answer is don't do speed! however, in answer to your question, just wait for it to clear out of your blood.
A 43-year-old member asked:

Why does the ophthalmologist dilate the pupil?

1 doctor answer3 doctors weighed in
Dr. Brandon Macy
Podiatry 41 years experience
To get a better...: Look at the retina without the pupils constricting when exposed to the light, at least that how it was once explained to me.
Dr. Michael Ham
Dr. Michael Ham commented
Ophthalmology 27 years experience
Dilation makes the pupil larger and remain larger in light. This enables the eye doctor to look in the back/inside the eye through the large opening (dilated pupil) instead of a small opening. enables better and more complete exam.
Dec 22, 2013
A 43-year-old member asked:

Are pupils dilation a sign that someone likes you?

1 doctor answer1 doctor weighed in
Dr. William Goldstein
Ophthalmology 31 years experience
Maybe: Pupil size changes with emotion in most people. Fear and excitement can both cause dilation though, so you may not know which it is!
A 29-year-old member asked:

Why does your pupil dilate?

1 doctor answer2 doctors weighed in
Dr. Stevan Cordas
Internal Medicine 57 years experience
Pupil: Because a part of the autonomic nervous system (sympathetic) , when stimulated, will caused two sets of muscles in your iris to change the diameter of the whole in the center (the pupil).
A 34-year-old female asked:

My pupils are constantly pulsating in light that is not changing. What could cause this?

2 doctor answers7 doctors weighed in
Dr. Robert Kwok
Pediatrics 33 years experience
Eye doctor can check: An ophthalmologist (an md eye doctor) can check the eyes to see if the iris is behaving oddly, either dilating-contracting-dilating-contracting without changes in the surrounding light; or pulsating as if the pupil were moving in sync with the person's heartbeat. The doctor can do a thorough eye exam to make sure there is not a problem in the eye, around the eye, or behind the eyeball.

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Last updated Oct 23, 2017

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