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Doctor insights on: Causes Of Pinpoint Pupils

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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. Jack Hinkle
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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 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 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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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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Can Lexapro cause aniscoria? I started this med 2 weeks ago and I woke up today with an enlarged left pupil, but responds normally to light. Worried.

Can Lexapro cause aniscoria? I started this med 2 weeks ago and I woke up today with an enlarged left pupil, but responds normally to light. Worried.

Anisocoria: I have a reference that does not list anisocoria as a side effect. However, Lexapro can cause tachycardia, sweating and other sympathetic symptoms. It is sympathetic tone that causes this. Any drops, visine etc. I would talk to your eye provider o. ...Read more

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Why is it that my pupil is natrually since I was a kid always very enlarged and can that cause headaches ?

Why is it that my pupil is natrually since I was a kid always very enlarged and can that cause headaches ?

More info: There are medical conditions where one pupil or both pupils are dilated. It might be an isolated problem or one manifestation of a different disorder. Also: does your eye react to light? Do you have any associated symptoms? Might need further w/u and investigation. Seeing your md would guide your next step. ...Read more

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Why do ssri's cause pupil dialation?

Serotonin effect: Ssris increase serotonin levels in nerves throughout the body, including the eye. Excess serotonin acting on the 5-ht7 and 5-ht2a/2c receptors in the eye produce relaxation of the pupil and passive dilation. This effect is countered by the 5-ht1a receptor which contracts the muscle. However, when both receptors are simultaneously stimulated, the predominant effect is mydriasis (dilation). ...Read more

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