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Doctor insights on: Causes Of Pinpoint Pupils

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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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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 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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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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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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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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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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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