What is the pupil?
Q: What is the pupil?
A: The pupil is the opening in the centre of the eye. Light enters through the pupil and goes through the lens, which focuses the image on the retina.
Q: How does light affect the size of a pupil?
A: When more light is needed, the pupil is made larger. In brighter light, the pupil is made smaller. The light makes the pupil change its size. When it is darker, the pupils will dilate (get bigger) because they need to allow more light into the eye to see. When it is bright,the pupil will constrict (get smaller) to restrict amount of light there is getting into the eye so we can see.
Q: What shape does a human's pupil normally have?
A: A human's pupil normally has a round shape.
Q: What colour are most animal's pupils?
A: Most animals' pupils are black in colour.
Q: Why do we have a pupiI?
A: We have a pupiI to regulate and control how much light travels to our retina so that we can see clearly and accurately.
Q: Is there any other animals with differently shaped pupils than humans?
A: Yes, some animals like cats have slit-shaped pupils instead of round ones like humans do.
Q: Why doesn't our pupiI have any colour? A: Our pupiI doesn't have any colour because all ofthe incoming light gets absorbed by tissues inside our eyes as it passes through them
