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Doctor insights on: Pupil Dilation In Response To Light

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Would hypocalcemia cause pupil dilation in response to light?

Would hypocalcemia cause pupil dilation in response to light?

Unlikely: Severe hypocalcemia may weaken muscle contraction, which could make the pupils unable to constrict. But it cannot cause a paradoxical dilation of the pupils to light. ...Read more

Pupil Dilates When Dark (Definition)

Pupil dilation in response to light is a symptom in which a both of a person's pupils constrict when light is first shined into the good eye, but then both pupils dilate when light switched to the worse eye. This symptom means that the brain is perceiving less light ...Read more


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Could hypocalcemia cause pupil dilation and a sluggish pupil response to light?

Could hypocalcemia cause pupil dilation and a sluggish pupil response to light?

Hypocalcemia: A complete list of the symptoms of hypocalcemia (h) can be found at this link: http://www.Clevelandclinicmeded. Com/medicalpubs/diseasemanagement/endocrinology/hypocalcemia/.

Pupil dilation and a sluggish pupil are not some symptoms of h. ...Read more

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Slowed pupil dilation in left eye in response to bright light exposure. How to make this normal?

Slowed pupil dilation in left eye in response to bright light exposure. How to make this normal?

Confused: The pupil becomes smaller in bright light. Dilation is when the pupil increases in size. This occurs in dim light or when you are frightened. ...Read more

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What's pupil dilation?

Pupil dilation: When you look at your eye is the mirror, the dark circle in the center is the pupil. Dilating drops make the pupil larger and allow a more complete eye exam robe performed. Dilation takes about 15-20 minutes and lasts 3-4 hours or longer (depending on which drops are used). ...Read more

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Is it bad to have pupil dilation?

Is it bad to have pupil dilation?

Not always: If you are referring to having your eyes dilated with drops in the ophthalmologist's office, this is generally safe, except when you have "narrow angles." this can be determined by your eye md. If your pupil spontaneously dilates, this can be a sign of a problem in the brain (tumor, aneurysm, etc) and should be evaluated right away by an ophthalmologist. ...Read more

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How long will pupil dilation last?

How long will pupil dilation last?

Depends...: Depends on atropine can last a week. Mydriacyl (tropicamide) about 4 hours. ...Read more

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How long can pupil dilation last after an exam?

A few hours: Typical dilation usually lasts between 4 and 6 hours. When a chile is dilated, it may last a few hours longer. If dilation lasts more than 24 hours, you should contact your eye doctor. ...Read more

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How long does it take for pupil dilation to end?

4 hours: Usually, around 4 hours, however in eyes that are lighter, blue, two-toned, or green the effect of the drops can last beyond 4 hours. In small children, although rare, the effect can last up to a week or more. ...Read more

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I have uneven pupil dilation. Is this harmful or harmless?

I have uneven pupil dilation. Is this harmful or harmless?

See an eye doctor: It can be normal, especially if it has always been present. There are certain conditions that can lead to one pupil dilating more (or less) than the other. If the pupil difference is new, it should be evaluated by an eye doctor soon. The condition itself is usually harmless, but the underlying cause needs to be addressed. ...Read more

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Could pupil dilation hurt my eyes?

No: These are used daily in ophthalmology offices! We would not use a hurtful medication. The dilating drops do make your vision blurry until t. He pupils get back to normal. ...Read more

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Does alcohol cause pupil dilation?

Does alcohol cause pupil dilation?

Usually constriction: Alcohol in large amounts can cause pupillary constriction. That being said, it is not the best indicator of alcohol use/intoxication. Like benzodiazepines and opioids, alcohol is a depressant, promoting parasympathetic activity and pupil constriction. ...Read more

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Do colored contacts affect pupil dilation?

No: Colored contacts still let almost all light in, so there is no effect on pupil size. But the pattern of color in the lensar make the pupil look different. ...Read more

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Does insomnia cause pupil dilation?

Does insomnia cause pupil dilation?

Not usually: Dilated pupils can occur as a side effect of various medications and several illicit drugs. Serious medical conditions such as serotonin syndrome can also cause this. Insomnia for a night or two would not usually result in dilated pupils.

How long have you had insomnia? Have you been depressed or started a new medication? See your doctor to be sure and bring a list of all drugs, herbals takin ...Read more

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Can Celexa (citalopram) cause pupil dilation?

Can Celexa (citalopram) cause pupil dilation?

Possible: Celexa (citalopram) can cause pupil dilation. It is an uncommon side effect. If this occurs see prescribing doctor or pcp for exam and guidance. Best wishes. ...Read more

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Sudden bilateral pupil dilation in normal light, pupils responded to direct light but returned to dilated size, normalised after 10mins. Cause?

Pupil dilation: Many causes of pupil dilation, including emotions — higher levels of circulating adrenaline, which occur during times of excitement or fear.
Drugs — from eye drops to hallucinogenics. Especially drugs that are anticholinergic
light — low light, or a problem with receiving light on the retina
neurologic problem — from the optic nerve to the part of the brain that regulates the eyes. ...Read more

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How can one reduce pupil dilation? I take aderall 30mg XR once every am 5 mg ir evening. Most days iris all but disappears, and I look like a junkie

Constricting pupils: Aderral can cause pupil dilation, so the options are to reduce dosage or eliminate the aderral, switch to a different drug (eg if you are treating adhd, straterra may be an option, or other treatment). Taking another drug to constrict the pupil (eg, Pilocarpine 1% 1 drop) may also cause other side effects, like pinpoint pupils, blurry vision, corneal irritation. & long term use: lens opacification. ...Read more

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Is pupil dilation (mydriasis) normal when starting fluoxetine?

Not usually: Fluoxetine (prozac) is not usually associated with pupil dilation, although the pupils may be slightly less reactive to light. The medicine is a selective seratonin reuptake inhibitor (ssri) and can cause dry mouth, dry eyes and other side effects. ...Read more

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Can lack of sex cause pupil dilation?

No.: Lack of sexual activity or excess sexual activity will have no effect on the normal, daily, stable size of your eye's pupil. Your eye's pupil may become dilated during sex if you are engaging in the activity in a dimly lit room as a normal reaction to the eye needing more light to enter the eye and impact the retina for one to see. Lack of sex may make you a poor "pupil" of sex however. ...Read more

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Can doctor drops cause uneven pupil dilation?

Yes.: This can be either due to the drops that the doctor uses in each eye or due to a difference in each iris of the person who is being dilated. The doctor may use a stronger combination of drops in one eye resulting in uneven pupil dilation. The iris of one eye may have an anatomical difference in its make-up that is either congenital or acquired (trauma) that could lead to uneven pupil dilation. ...Read more

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Is pupil dilation (mydriasis) normal when starting Prozac (fluoxetine)?

Is pupil dilation (mydriasis) normal when starting Prozac (fluoxetine)?

Can occur: Fluoxetine can cause mydriasis (pupil dilation) as one of the possible side effects given its effects on your autonomic nervous system (sweating/diaphoresis is another related side effect). This usually goes away over time. ...Read more

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Is it possible for one to be hypersensitive to drug-induced pupil dilation?

Is it possible for one to be hypersensitive to drug-induced pupil dilation?

Yes.: Drug induced pupil dilation generally lasts roughly 3 to 4 hours where the patient is blurred for reading but generally can still see well at distance. Some eyes are more sensitive to the dilating drops, especially lighter colored eyes that have less melanin pigment. In these eyes the dilation may last several hours and even have a lingering effect into the next day. ...Read more

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Had migraines w/aura since 7yrs old, right pupil dilation & have a headache daily. No medication had helped. What could cause this?

Had migraines w/aura since 7yrs old, right pupil dilation & have a headache daily. No medication had helped. What could cause this?

The migraine aura: Is a neurosensory disturbance that includes a series of idiopathic, recurring neurologic symptoms that develop gradually over a 5-20 minute period and last less than an hour. An aura that lasts more than 60 minutes may be indicative of more serious pathology. As the aura abates there may be a pain-free interval. Take your medication before the headache occurs at aura end.
See OFP specialist. ...Read more

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Is it common to have blurred vision with pupil dilation?

Yes.: It is common, expected and practically universal. Your pupil is dilated by the eye doctor in order to be able to get a better and more complete view of the back internal structures of your eye (retina, macula, optic nerve). The drug induced dilation temporarily paralyzes the muscles in the iris & ciliary body that one uses to properly focus resulting in temporary blurred vision mostly at near. ...Read more

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How do you reduce pupil dilation after finishing eye exam?

How do you reduce pupil dilation after finishing eye exam?

Pupil dilation: I offer reversal pupillary dilation drops called dapriazole, which lessen the duration of dilation by about 4 hours. Of course, it depends on which dilating eye drops the doctor is instilling. ...Read more

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How long does it take for pupil dilation to go away after eye exam?

How long does it take for pupil dilation to go away after eye exam?

It depends: It can generally take 3-4 hours, but it can last longer in patients with diabetes, or brown irises. There are drops that reverse dilation faster. ...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


Dr. Barbara Lavi
72 doctors shared insights

Mydriasis (Definition)

Mydriasis is the process of dilating the ...Read more