Your pupil expands in the dark in order to obtain more light. Your eyesight is interpreted by the brain with light signals, when it is dark your pupil expands to grab as much light as possible.
They will get smaller.
The pupil will have been large/wide in the dark room because your pupils automatically enlarge to take in more light when in a dark area. They correspondingly get smaller in brightly lit situations as the light-sensitive retina at the back of the eye can't cope with too much light. It has to be 'just right'!
Your pupils expand and contract because of a muscle, which is connected to the eye by the iris. When you enter a dark room the muscles will automatically expand your pupil, therefore letting it get more light. Likewise, when you enter a bright room, instead of expanding, your pupils will contract because too much light is being let in.
pupil becomes short when we go from dark to light room
Your pupils dilate in the darkness, enabling you to see better in the darkness. When in bright light, they contract.
It will Grow larger or dilate to absorb more light
The Pupil of your eye will get bigger because it is trying to let in more light.
The pupils are contracted and when you go into the dark room your pupils take time to dilate or open, not enough light gets in your eyes to see and you are momentarily blind.
So, in the dark your pupil is big and in the light its smaller. It gets smaller when you enter a bright room to protect the eye from the light.
dilated or bigger
the pupil =]
The pupil allows light to enter the eye.
The pupil is the part of the eye through which light passes.
The iris has an opening, called the pupil, through which light enters the eye.
Eyes do not need bright and dim light - although the iris (colored part of the eye) and pupil (black center of the eye) function differently under these circumstances. In bright light, the muscles in the iris contract to make the pupil smaller. In dim light, the iris makes the pupil enlarge to allow as much of the scarce light as possible.
The iris widens to allow as much light ad possible to enter
They die.
in bright light the pupil shrinks
They become bigger and widder
When the eye is stimulated by bright light, the circular muscle of the iris contracts, decreasing the size of the pupil.
the pupil =]
When exposed to a bright light, the pupil of the human eye will contract. This action allows less light to come in contact with the lens.
In bright light, a cat's pupil will narrow to a slit to stop too much light getting in, which can be harmful to its eyes. In dim light, the pupil will get much bigger to let the light in, making it easier for the cat to see in dim light.
The Iris controls the size of the pupil to control the brightness of the light that's allowed to enter the eye. This is a protective measure when the light is too bright and it also opens the iris in low light situations to allow the eye to see more. Well, the iris changes the size of the pupil so when you are in bright light your pupil will get smaller because the eye will absorb all light striking it. However, when you are in a dark room or place your pupil will get bigger/wider because it has no light to absorb it so your eye wants light. For example think of the pupil trying to look for light so it has to get wider!
When suddenly exposed to bright light, your pupils will automatically constrict (actually the constrictor muscles of the iris will contract, causing the iris to expand and narrow the pupil). Also, it is likely your eyelids will squint shut.
The pupil allows light to enter the eye.
Pupil