Why Does Scopolamine Cause Pupil Dilation?

[5–7]Another possibility we postulate is positioning the patch more anteriorly, thereby allowing access of scopolamine to the internal carotid artery causing the mental symptoms and, through the ophthalmic branch supplying the ciliary muscles of the ipsilateral side, causing pupillary dilatation.

Does scopolamine make your eyes dilate?

Avoid touching your eyes just after applying a scopolamine transdermal skin patch. The medication contained in the patch can dilate your pupils and cause blurred vision.

What is the mechanism of action of scopolamine?

Mechanism Of Action

It has been suggested that scopolamine acts in the central nervous system (CNS) by blocking cholinergic transmission from the vestibular nuclei to higher centers in the CNS and from the reticular formation to the vomiting center.