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Doctor insights on: Causes Of Pinpoint Pupils

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Dr. Cindy Juster
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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 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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Dr. Cindy Juster
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30 years in practice
2M people helped
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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?

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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Dr. Cindy Juster
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30 years in practice
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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 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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Does anxiety cause changes in pupil size?

Does anxiety cause changes in pupil size?

It can: The diameter of the pupil tends to enlarge in response to fear. In fact some scientists are using technology to measure pupillary response in studies of fear. The pupils will also change diameter in response to changes in the body, such as the introduction of various drugs. ...Read more

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Can the medication, namenda, cause constricted pupils?

Can the medication, namenda, cause constricted pupils?

Probably not: This is not one of the listed side effects. However, if you began having this problem when you started the medication, contact your doctor and discuss this with him/her. ...Read more

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Can retinopathy cause one pupil being smaller than the other?

Can retinopathy cause one pupil being smaller than the other?

What kind: Diabetic tend to have a smaller pupil. What kind of retinopathy do you mean? If the person develops unequal pupil then he/she needs to consult an ophthalmologist asap. ...Read more

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Dr. Cindy Juster
Board Certified, Pediatrics
30 years in practice
2M people helped
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