Question 1

would hypocalcemia cause pupil dilation in response to light?

Accepted Answer

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.

Question 2

slowed pupil dilation in left eye in response to bright light exposure. how to make this normal?

Accepted Answer

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.

Question 3

what's pupil dilation?

Accepted Answer

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).

Question 4

is it bad to have pupil dilation?

Accepted Answer

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.

Question 5

how long will pupil dilation last?

Accepted Answer

Depends...: ..Atropine can last a week. Mydriacyl (tropicamide) about 4 hours.

Question 6

how long can pupil dilation last after an exam?

Accepted Answer

1-2 hours: Usually 1-2 hours, but it might last up to 3 hours, but after the first hour you'll see vision will get better slowly.

Question 7

how long does it take for pupil dilation to end?

Accepted Answer

4 hours: Usually, around 4 hours, however in eyes that are lighter in color, 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.

Question 8

i have uneven pupil dilation. is this harmful or harmless?

Accepted Answer

This Depends: This depends on the degree to which the two pupils are uneven in diameter.  Uneven pupil size is known medically as “anisocoria”.  Anisocoria may result from many conditions, some harmless and some life threatening.  In general, we allow for 1 to 2 millimeters of physiologic (normal) difference in pupil size.  However, if the discrepancy in pupillary diameters exceeds this, a significant underlying problem may exist, especially if new in onset.  The challenge for the clinician is to determine which pupil is the abnormal one: the larger pupil or the smaller pupil.  If the problem lies with the larger pupil, a variety of conditions may be accountable ranging from benign to serious.  A common benign cause of pupil dilation is the inadvertent introduction of a dilating compound into the eye.  For example, a patient using a nasal degongestant/vasoconstrictor spray containing the adrenergic agent neosynephrine may inadvertently spray some into the eye, resulting in pupil dilation.  Likewise, a patient using a scopolamine patch for sea-sickness may inadvertently get some of this anticholinergic agent compound onto his or her hands and rub the eye, resulting in pupil dilation.  Also, people who tend to plants may inadvertently get some sap on their hands and rub the eyes.  The sap of some plants contain belladonna alkaloids which are potent anticholinergics which may result in pupil dilation.  More serious causes of pupil dilation include trauma, resulting in pupillary margin tears, a condition called adie’s tonic pupil and, finally, of greatest concern, a third nerve palsy.  A third nerve palsy with a dilated pupil often results from a cerebral artery aneurysm and is a medical emergency as it may lead to intracranial hemorrhage and death.  Other signs of a third nerve palsy are new onset double vision, a droopy eyelid and the restriction of eye movement such that it moves “down and out”.  If these signs are present, especially if there are attendant headaches, the patient must go to the emergency room immediately for brain imaging and possible neurosurgical intervention.  If the problem is with the smaller pupil, then the list of possible conditions includes, most seriously, a horners syndrome, which results from interruption of the sympathetic nerve chain as it travels from brain, through thorax, back up to eye via internal carotid artery.  Any compressive lesion along this pathway may interrupt nerve impulses directing pupil dilation, resulting in pupil constriction or “miosis”.  Worrisome lesions include certain types of lung cancer and carotid artery dissection which is a medical emergency.  Other signs of horners syndrome include droopy eyelid on the affected side, and decreased sweat production of the facial skin on the side of the problem.

Question 9

how long does it take for drops to wear off on pupil dilation?

Accepted Answer

Hours: Braun eyes - 2-4 hours
blue eyes up to a day.

Question 10

could pupil dilation hurt my eyes?

Accepted Answer

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.

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Doctor answers about:

Pupil dilation in response to light

A member asked:

Would hypocalcemia cause pupil dilation in response to light?

A member asked:

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

A member asked:

What's pupil dilation?

A member asked:

Is it bad to have pupil dilation?

A member asked:

How long will pupil dilation last?

A member asked:

How long can pupil dilation last after an exam?

A member asked:

How long does it take for pupil dilation to end?

A member asked:

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

A member asked:

How long does it take for drops to wear off on pupil dilation?

A member asked:

Could pupil dilation hurt my eyes?

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