No, Xanax is an anti-depressant drug and most of those drugs will not effect the pupil size. However, it will induce horizontal gaze nystagmus (involuntary jerking of the eyes as they look from side to side).
Yes, fear can cause pupils to constrict. When the body experiences fear, the sympathetic nervous system is activated, leading to the release of adrenaline. Adrenaline causes the pupils to constrict, allowing the individual to focus on a threat and react quickly.
Can steroids cause pupils to dilate
No. It actually dilates them. Opiates (hydrocodone, heroin etc) constrict pupils.
Your pupils would dilate
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.
no, uppers, acid & ecstacy will dialate your pupils. downers, like heroin and oxy's will constrict "pinpoint" your pupils
Alcohol dilates peripheral blood vessels, but has been known to actuallyconstrict some blood vessels in the brain, lowering the oxygen content.
No, they become smaller (constrict).The pupils become larger (dilate) to let in more light. The bright headlights would cause the eyes to let in less light, which means you will not be able to see anything clearly except those bright lights. You are "blinded" until your eyes adjust again, and by that time you may have veered off the road or had a collision.
Yes, alcohol consumption can cause the pupils to constrict or become smaller. This is a normal physiological response to the depressant effects of alcohol on the central nervous system.
there are many people who like the nicotine (in smoke).
My experience is that it constricts them, making your pupils look like pin dots.
yes, i have really big pupils but im not on drugs. but if someone's pupils are dilated and dont shrink when you shine a light in their eyes their probably on drugs