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The dilator muscle which makes the pupil larger and the constrictor muscle which makes the pupil smaller.

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15y ago

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What muscle is responsible for mydriasis?

a group of smooth muscles called sphincter pupillae cause the pupil constriction which is known as mydriasis.


What drugs cause mydriasis?

for the illegal drugs: the withdrawal of opioids such as morphine is known to cause mydriasis.


Does cannabis cause miosis?

No, in animals even casuse mydriasis


Does mydriasis go away on its own?

depend on the cause of the mydriasis. if it is a dysfunction of the cranial nerve number three it won't go unless treated. another cause is withdrawal from opioids and it is go on it's own.


Does Macular Degeneration cause mydriasis?

Macular degeneration itself does not directly cause mydriasis (dilated pupils). Mydriasis can result from various factors, including medications, neurological conditions, or eye trauma, but it is not a typical symptom of macular degeneration. Macular degeneration primarily affects central vision and the retina, leading to vision loss rather than changes in pupil size. If someone experiences mydriasis, it's important to consult a healthcare professional to determine the underlying cause.


What is mydriasis?

dilation of the pupil.


What will sympathetic stimulation of the eye do?

Sympathetic stimulation of the eye will cause dilation of the pupil (mydriasis) and relaxation of the ciliary muscle for far vision.


Which is not an action of cholinergic drugs?

Dilation of the pupils (Mydriasis)


What is the effect of administration of a miotic agent?

Miotic agents cause the pupil of the eye to constrict, or become smaller. Mydriasis is the opposite, making the pupil dilate like when you go to the eye doctor.


What is the chemical cause of sore muscles?

Lactic acid settling in the muscles


What muscle do to cause movement?

All muscles cause movement due to the contraction of coupled muscle cells. Perhaps the question intended to inquire about muscles that cause a bending in which the joint angle decreases. Muscles of this type are called flexor muscles (biceps for example).


Is mydriasis parasympathetic or sympathetic?

the parasympathetic fibers of the cranial nerve number three.