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Doctor insights on: Fixed And Dilated Pupil

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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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Had pink eye used dilation drops. How long will pupils be dilated?

Had pink eye used dilation drops. How long will pupils be dilated?

Depends: Mydriacyl, or tropicamide, about 1-2 hours. Cyclogel 6-12 hous. Atropine 1-2 weeks phenyephrine 1-2 hours. ...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 and a sluggish pupil are not some of the symptoms of h. ...Read more

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During a stroke or brain aneurysm, will the pupils be dilated and fixed or just dilated? Are neither of the two normal?

During a stroke or brain aneurysm, will the pupils be dilated and fixed or just dilated? Are neither of the two normal?

Depends: A specific aneurysm location in the brain can cause dilation of one pupil alone which may occur in a patient who otherwise does not have any other specific problems. In general dilation and lack of reaction to light (=fixed) of one or both pupils indicates brain swelling and pressure of the brain on the 3rd cranial nerves which is an emergency and can be an sign of brain death if left untreated. ...Read more

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Do colored contacts affect pupil dilation?

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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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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Is "anxiety" associated with a constricted pupil or a dilated pupil?

Is "anxiety" associated with a constricted pupil or a dilated pupil?

Neither unless : Severe, then should be dilated due to sympathetic , not parasympathetic, stimulation. ...Read more

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What if your pupils iris always dilated even in light?

What if your pupils iris always dilated even in light?

Several things: If this is something new, i'd go to the er, especially if your eyelid is affected as well. We need to rule out dangerous scenarios, like a third nerve palsy, which is sometimes caused by an aneurysm. There are other things that can cause it as well. ...Read more

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After treatment for iritis, should the eyedrops make pupil large with blurred vision?

After treatment for iritis, should the eyedrops make pupil large with blurred vision?

Yes: Dilating the pupil, putting it at rest, is often part of the treatment of iritis. The pupillary reaction to light in an inflamed eye can lead to severe photophobia. Dilating the pupil will make you more comfortable. ...Read more

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Would having pupils dilated too often with dilating drops harm your eyes, e.g., destroy the pupils' own ability to contract/relax?

Would having pupils dilated too often with dilating drops harm your eyes, e.g., destroy the pupils' own ability to contract/relax?

No: I am unaware of any cases where using drops that dilate eyes cause permanent dilation. Physiologically you would have to effect the ganglion that causes this and the drops do not do that. ...Read more

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Does having dilated pupils cause blurry vision?

Yes: Having your eye dilated for an eye exam can cause vision blurryness that is temporary. ...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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I have a refractive error of -5.75 in both eyes (myopia & astigmatism) and floaters in both eyes. Is a pupil dilation better than the digital retinal?

I have a refractive error of -5.75 in both eyes (myopia & astigmatism) and floaters in both eyes. Is a pupil dilation better than the digital retinal?

Yes: Nothing beats the chance to get a good look at the peripheral retina when there is an onset of new floaters. Dilation is a bit of an annoying pain but is recommended in this circumstance. You are, hopefully, seeing an ophthalmologist. ...Read more

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Can opthamologists tell the difference between hyaline cendensation and vitreous bodies and eye floaters w/dilated eye exam? Same prognosis for both?

Can opthamologists tell the difference between hyaline cendensation and vitreous bodies and eye floaters w/dilated eye exam? Same prognosis for both?

A dilated exam can: Differentiate between a vitreous floater, vitreous detachment and hyaloid opacification. The etiology (cause) for these entities can vary and thus patient history is important. The prognosis can also be variable depending upon the diagnosis and cause of each entity listed. For example, hyaloid pathology could be secondary to inflammation and carries a different set of issues. A good dilated is rec. ...Read more

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Is it common to have blurred vision after pupil dilation at eye doctor?

Is it common to have blurred vision after pupil dilation at eye doctor?

Dilation: As a common part of the vision evaluation, the pupil may need dilation with eyedrops to allow a better view of the back of the eye.This causes some disturbance of the vision including difficulty focusing and blur from the enlarged pupil. All of this will disappear by the next day as the pupil normalizes. ...Read more

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Dr. Arthur Balin
74 doctors shared insights

Mydriasis (Definition)

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