How pupil helps us to see from dark region to lighted one?

Answer:
the pupil contracts and expands in response to light. In dark areas, the pupil will expand allowing more light to enter allowing us to see better in darkness. In well lit areas it will contract allowing less light to enter, allowing us to see in better detail
Contributor: Kevin
First answer by Kevin Harjamaki. Last edit by Kevin Harjamaki. Contributor trust: 7 [recommend contributor recommended]. Question popularity: 49 [recommend question].