no. they only do that on cartoons
Your Pupils
Cover your eyes/stop light from reaching them. Your pupils will dialte to become larger only to catch more light. Certain drugs also make your pupils dialate.
The pupils get larger. Pupils take in light and if it is dark, there is not much light if there is any at all. The pupils grow larger to take in as much light as possible. If the hole is bigger, more light can come in faster.
Iris
They do not get smaller, your pupils will dilate / grow larger on E. Takes about 30 minutes or so...
You probably mean the pupillary reflex. It is the reflex responsible for your pupils constricting (becoming smaller) when exposed to light and dilating (becoming bigger) when you walk into a dark room.
Dilated pupils appear larger than usual, and they do not constrict in response to light. You can check your own pupils by looking in a mirror in a well-lit room. Dilated pupils can be caused by various factors such as drugs, emotions, or medical conditions.
No, historically it's the exact opposite, it causes dilation of the pupils, particularly in larger than therapeutic doses. If you're noticing constricted pupils despite being on this medication, I would recommend notifying your doctor immediately as there may be another cause.
fixed pupil- n. A pupil that is unresponsive to stimuli.
The same as ours do... light constricts (smaller), darkness dilates (larger) the pupil.
When your pupils appear small, it is called pinpoint pupils. This can be a sign of opioid drug use, brain injury, or a reaction to certain medications. It is important to seek medical attention if you notice this symptom.