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If your retina were overexposed to light you would see just a glare. If not enough light got in than everything would seem very dark. So the pupil expands or contracts to make sure just the right amount of light gets in.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoin order to let in more light in dim conditions or less light in bright conditions.
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What is anisocoria?
unequal pupil size
Which part of the eyes control size of the pupil?
the part of the eye that controls the pupil is the iris
What is the size of pupil of death people?
small
Why can left pupil be larger than right pupil?
A difference in pupil size is a relatively common anatomical variation. If you have any concerns, please see your primary care or eye care provider.
How is the Nerve impulse responsible for the pupil becoming smaller?
Pupil is a window for the light to enter our eyes. When we are in a dim light a nerve impulse is generated to the brain to enlarge the pupil. Size of pupil is managed by the iris (coloured part of the eye). If excessive light is there, the pupil shrinks to a smaller size so that the eye's not damaged esp. the retina where the image of objects are formed
What happens to the lensecornea and pupil when lights hits it?
Nothing. AFTER the light is detected and calibrated, the pupil may change size.
Can emotion change pupil size?
Yes. ALL lovers should have noticed this.
Does pupil size remain constant while focusing fixed near point object?
Yes, pupil size should not be affected by the focal distance, unless there is a change in the amount of light at that distance. To change focal distance, the lens contracts or expands. The pupil dilates and constricts based upon how much ambient light there is.
A) Size of pupil becomes __________________when you see in dim light?
size of pupil becomes larger when you see in dim light
how to change your eye color naturally?
sun exposurecan activate a hormone that changes your pupil size thus your eye color
What is anisocoria?
unequal pupil size
What adjusts the size of the pupil?
7845
Is it possible to break your pupil?
Eye trauma can damage the muscle that controls pupil size.
Which part of the eyes control size of the pupil?
the part of the eye that controls the pupil is the iris
Do you have to think about it when you want the size of your pupil to change?
No; the change in the size of your pupil is an involuntary action, meaning that it happens without you thinking about it. The size of your pupils adjust to stimuli, such as bright light. If a bright light was shined in your eyes, your pupils would get smaller in order to let as little light in as possible. Reversely, if you're in a dark room, your pupils will get bigger to let in as much light as possible.
Is it possible for your pupil to grow bigger than your iris?
No. The pupil can only open to the size of the iris.
Where is the iris located?
The iris is the layer that surrounds the pupil and controls the size and diameter of the pupil. It also controls the amount of light that reaches the pupil.
