Pupil dilators dilate the pupil and are mainly used in adults (under 40 years of age) and adolescents for dilated pupil examinations and before optometry and internal eye surgery.
Closed angle glaucoma is contraindicated, commonly used are topiramate eh and 1% atropine eye ointment, atropine drops, etc. If the eye drops used are topiramate eh the pupil size can usually return to normal in 1 day, if the drops are atropine eye drops it takes half a month to return to normal pupil size.