Okay so I have been there too. This guy would always do that with his eyebrows and he always copied what I did. He said to me one day I like you and I think your really cool. THE GUY IS SO INTO GIRL
it gets bigger
When a light is not shined into an eye the pupil contracts gets bigger because the eye needs all the light being presented to it. If the light is not taken away the pupil does not dilate. PS like the eye gets smaller in the light.
Smaller because the eye is protecting it's self from the light
he might like you
They become bigger and widder
each human has a black circle in there eye which is called a pupil,when someone is in the light the pupil does not need that much light so it gets smaller but if it is in a dark area the pupil gets bigger because the eye needs lots of light to indicate where the person is going
its not just parakeets its everyones eyes when light enters the eye the pupil doesnt get bigger its the color around the pupil that gets bigger or smaller the pupil is wut the light goes through. then it reflects againts the back of your eye and that's how you see things
Contracts
The iris contracts (gets smaller). If this doesnt happen, its a good indication of head trauma/concussion, etc.
the pupil gets larger in darkness, as it is trying to let in as much light as possible. when you turn the light on again, it will constrict, because there is more than enough light. it is protecting your eyesight
Your pupil gets smaller or gets bigger depending on the amount of light. If theres a lot of light it gets small to only let some in. If theres only a little light it gets big to let more in.
if you did not have a pupil you wouldn't be able to see light. see light enters as the pupil gets smaller which allows more and more light to come in. and when the pupil gets bigger, then i woul say i Sucked my mommas titis