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Doctor insights on: Causes Of Unequal Pupils

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What would cause unequal pupils in a patient that has been in a medically induced coma for over a week?

What would cause unequal pupils in a patient that has been in a medically induced coma for over a week?

Depends: It is important to know if this had been true prior to the illness onset. If not present prior the possibility is high the pt has had some intracranial catastrophe such as brain bleed. The unequal pupils suggest a bleed or other intracranial event. Need to speak to the neurologist. If not under the care of neuro get a consult. ...Read more

Pupil (Definition)

The pupil is the opening in the iris inside of the eye though which light is focused on the retinal film at the back of the eye. The iris can open and close in response to light to vary the amount inside the eye. It is what looks red, in the ...Read more


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What can cause unequal pupil size? It is not very much bigger than the other one and it contracts fast to light. And should I worry?

Check photos: To see if has always been there. If yes, it is likely physiologic anisocoria which is fine. If this is a new change - than get checked. ...Read more

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Could stress cause unequal pupil sizes?

Well...: If you already had unequal pupil sizes (anisocoria) ; the pupils dilated under stress- it could become more apparent. ...Read more

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Pressure in the left side of my head for nearly 2 weeks. Doesn't cause any pain but it does cause dizziness and unequal pupil size. What is it?

Pressure in the left side of my head for nearly 2 weeks. Doesn't cause any pain but it does cause dizziness and unequal pupil size. What is it?

Insufficient data: It is impossible to say exactly what is going on, age, blood pressure, other symptoms or complicating comorbid conditions, medications, state of your "nerves" all matter. Give details ...Read more

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Can ear infection/disorder/disease or vestibular issues cause unequal pupil size? Opthamalogist says eyes fine and he doesn't suspect neurological.

Can ear infection/disorder/disease or vestibular issues cause unequal pupil size? Opthamalogist says eyes fine and he doesn't suspect neurological.

How unequal: Vestibular lesion would not alter your pupil size. If an ophthalmologist examined you and determined it to be not a cause for concern, please let it be.
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Could unequal pupils be caused by stress?

Could unequal pupils be caused by stress?

Not - BUT: Anisocoria (unequal pupil size) is likely to be much more easily picked up with dilated pupils. Anxiety/ stress can cause pupils to dilate. ...Read more

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Painless pressure in head won't go away with painkillers? Pressure in head can cause dizziness, drowsiness and anisocoria (unequal pupil size)?

Painless pressure in head won't go away with painkillers? Pressure in head can cause dizziness, drowsiness and anisocoria (unequal pupil size)?

Emergency: Without an actual examination, I cannot give specific medical advice on your particular health,
but, signs of a life-threatening amount of pressure in the head (tumor/bleeding/mass as possible causes) would include
drowsiness, change in pupils, change in mood/alertness. And sometimes other neurological symptoms incluing balance/dizziness or weakness or seizures. ...Read more

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What problem are unequal pupils a sign of?

What problem are unequal pupils a sign of?

May be normal, or no: Unequal pupils (anisocoria) can be seen in 10% of normals. May be seen with abnormalities of the cranial nerves, multiple sclerosis, other issues. New finding? See your doc for sure to rule out a serious problem. ...Read more

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Unequal pupils sizes, is there really a cure?

Unequal pupils sizes, is there really a cure?

Anisocoria: Is a condition of unequal pupil sizes. Affecting 20% of the population, it can be an entirely harmless condition or a symptom of more serious medical problems. Have it checked out. If it is harmless, just ignore it. If there is an underlying medical problem, then that is what needs to be treated. There are medicines to make a pupil larger or smaller, and the strength can be adjusted. Don't do that ...Read more

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Is it possible to wake up with unequal pupils and nothing be wrong?

Probably not: If you have unequal pupils you should see your ophthalmologist. If you're using eyedrops this may contribute. Please seek attention. It could ...Read more

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Is any operation or procedure needed to fix unequal pupils?

No: But u may get greater benefit from the use of sunglasses to protect the no constricting pupil. ...Read more

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Please let me know if there is any operation/procedure to fix unequal pupils?

Please let me know if there is any operation/procedure to fix unequal pupils?

YouDon'tSeeEyeToEye: It depends on what's causing them but even then there's not much to offer except maybe eye drops that counteract whatever is causing the inequality (dilated on one side, constricted on the other or vice versa) unless the problem is in the eye and irreversible. Sometimes a systemic medication based on the cause. Rarely surgery. If that's what you have, start with a neurologist or opthalmologist. ...Read more

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She has unequal pupils and sweats on half her face sometimes?

She has unequal pupils and sweats on half her face sometimes?

Nerve deficit: This might be Horner's syndrome which disrupts the nerve supply on the affect side causing limited sweating, pupillary changes, frequently lid droop. Have her see an ophthalmologist to examine this. ...Read more

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Unequal pupils and have had pain in the left side of my jaw, head, and neck areas. One day right pupil is bigger. Next day left. Normal mri. Worried?

Concerning symptom: Any time one pupil is larger than the other, a complete evaluation should be performed. Is the pupil reactive to light? If not, an ER visit for brain imaging is essential. ...Read more

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Unequal pupils r > l. R eye feels swollen. R sided headaches. Occasional bright dots/sparks in r vision. Ct normal. Us carotids nil. What is wrong?

Unequal pupils r > l. R eye feels swollen. R sided headaches. Occasional bright dots/sparks in r vision. Ct normal. Us carotids nil. What is wrong?

Many: If it comes and goes, it most likely is a migraine. If it is persisting, it could be many diagnosisis. Horneres syndrome (but affected pupil should be smaller) / from trauama? / addies tonic pupil / optic neuritis (multiple sclerosis) / tumor (did the ct include brain and orbits?). ...Read more

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Unequal pupils r>l, both reactive, intermittent r eye pain and r sided headaches up to 3months. Noncontrast CT normal. Dizziness past few days. Tumor?

Unequal pupils r>l, both reactive, intermittent r eye pain and r sided headaches up to 3months. Noncontrast CT normal. Dizziness past few days. Tumor?

Neurologist, MRI: First, don't panic. Uneven pupils, aka anisocoria, are often due to a benign condition like migraines which would also explain the eye pain and headaches. However, more serious causes like multiple sclerosis and brain tumors are possible. You should see a neurologist who will likely order an MRI of the brain as part of a complete evaluation. ...Read more

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What causes small pupils?

Many causes: Without more information, the most inclusive answer is numerous medical conditions, prescription and non-prescription medications, and/or illicit substances. Some of these conditions and/or medications/substances can be harmful/lethal without medical attention. ...Read more

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What drugs cause your pupils to dilate?

What drugs cause your pupils to dilate?

Dilation: Many drugs can cause pupil dilation. Some include cocaine, amphetamines, and MDMA. Additionally, some non-illicit/ recreational medications such as anticholinergics and antidepressents can cause dilation. ...Read more

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I have an unequal pupil size, should I be worried?

Probably not: Unless you have had some direct injury to the eye or to the nerves to the eye, it is probably ok. There is commonly a little difference between pupils and if the difference is 1 mm or less, that is considered normal. If you vision is fine and the eye feels fine, don't worry about it. ...Read more

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Please answer! What would cause your pupils to not dilate?

Pupils dilate and: Constrict under control of cranial nerve 2 and 3. 2nd senses light and 3d adjusts pupil to control light input. No dilation = deficit in one or the other or a medication in the eye has poisoned muscle function. Would be very unlikely to inadvertently notice that both pupils do not dilate. Close eyes in bright room then open while friend observes. If they constrict they must have been dilated. ...Read more

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

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. ...Read more

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What could cause my left pupil to spasm in reaction to direct light?

What could cause my left pupil to spasm in reaction to direct light?

Spasm: Could be iritis-- inflammation of the iris can cause light sensitivity and pupil spasm-- this can be quite uncomfortable. Seek help with your local eye doctor... ...Read more

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What conditions would cause sudden onset and persistent bilateral medial corectopia in a person with previously centered pupils?

What conditions would cause sudden onset and persistent bilateral medial corectopia in a person with previously centered pupils?

Several things..: If it is in fact corectopia, and not esotropia or pseudoesotropia, then the causes include progressive iris atrophy and other rare developmental anomalies, as well as post-traumatic scarring. None of these are likely to cause sudden onset of corectopia, though. Since these conditions can sometimes cause glaucoma, it would be best if an eye md (ophthalmologist) examined you. ...Read more

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What causes dilated pupils and racing pulse?

Adrenaline surge...: Adrenaline is the principal mediator of the "fight or flight" response. This prepares your body for immediate action. Pupils dilate to increase light transmission, heart rate and blood pressure go up and blood is shunted away from other organs to the skeletal muscles. If this occurring in the absence of a stimulus, it is likely due to hypoglycemia or low blood sugar. Check for Insulin resistance. ...Read more

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What can cause off-center pupils?

Interesting question: This may be caused by an intracranial lesion. This symptom warrants an exam with an ophthalmologist. If you do not know of one have your primary care physician refer you to one. ...Read more