maybe they have problems that they feel can be solved by finding a gateway, or just bored
When light come into your eye your pupils will get smaller. In a dim or dark room your pupils will enlarge to let in more light so you can see. Also some drugs will make your pupils smaller, or when your high they dilate.
Its when your pupils get really small like when light hits it
Your pupils will expand as the light dims at twilight, or if in a darkish room. Becoming sexual excited or looking at pornography will also expand the pupils. Using drugs is another cause of expanding pupils, though some drugs will narrow the pupils.
POSSIBLY DRUGS -
Dramamine, Diphenhyramine:)
Dilation of the pupils (Mydriasis)
Listing them all would be time-consuming so lets put it this way. Drugs can cause a pupil to change in two ways by dilation making the pupil larger or constricting the pupils. Only two drugs constrict the pupils those being opiates and alcohol. So anything but, these can cause the pupils to dilate.
some do, some don't. marijuana can make them either big or small depending when you smoked it. drugs like narcotics make them very small. psychedelic drugs like acid and mushrooms make them very large
Bright light (as one natural reason). Opiate based drugs and medications can cause pinpoint pupils.
morphine and methadone.
Prescription drugs that can cause the pupils to contract are drugs from the opioid family. Morphine and codeine-dionine drugs are in this group. Others are hydroxy-morphine, dinitrophenylmorphine, and benzylmorphine. These drugs are used as pain killers.
The only ones I know for sure are mushrooms and mdma.