Does anyone know if it's normal for (non RX) eye drops to dialate your pupils?!


Question:

Does anyone know if it's normal for (non RX) eye drops to dialate your pupils?

Granted, I did put way more than the recommended dosage because my eyes were driving my absolutely CRAZY. But it was just my left eye today and it's pupil is dialated, and the right one is normal. It's creepy. Is that "normal"? I was also rubbing at it - which I know I shouldn't - and wiping it with a wet cloth. Any imput would be greatly appreciated!


Answers:

The iris, or colored part of the eye has muscles in it. There are two groups. The circular one, when it contracts...causes the pupil to become small or miotic.

The dilator muscles run from the pupil to the outside sort of like spokes of a wheel.

The size of the pupil is modulated by nervous input. The parasympathetic nerves make the pupil smaller, ....stimulates the round muscle to contract.

The sympathetic nerves stimulate the dilator muscles. The sympathetic nerves do things like speed up your heart, increase blood pressure, raise hair on the back of your neck... sort of an excitement system...fight or flight mechanism.

If your drops have a medication that stimulates the dilator, your pupil will get larger. If the medication stimulates the sphinter, your pupil will get smaller.

Some drops that are sold over the counter such as Visine, have medication that 'gets the red out'. To do this they cause constriction of the blood vessels so the eyes look less red as there's less blood. But if this medication is absorbed, it'll stimulate the sympathetic nerve endings and your pupil will dilate. Stop using the drop, the pupil will go back to normal.

Eyes aren't supposed to be WHITE WHITE WHITE. They have vessels and other fluids and sort of look more of a cream color.

Stop the drops, your pupil will go back to normal.

If you took a drop that paralyzes the sphinter muscle, it may take a while for that to go away. Just be sure the pupil size change is the drops and not something else going on.




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