UCSB Science Line
Sponge Spicules Nerve Cells Galaxy Abalone Shell Nickel Succinate X-ray Lens Lupine
UCSB Science Line
How it Works
Ask a Question
Search Topics
Our Scientists
Science Links
Contact Information
How come you don't see everything blue if your eyes are blue?
Question Date: 2013-09-30
Answer 1:

The color of our eyes doesn’t matter much. The light goes into our eyes through the pupil, which is the part that looks black.

Think about a doorway into a dark room. The part of your eye that is blue or brown, or some other color is like the doorway. It is called the iris. The iris can get big to let in more light, or small if the light is too bright. It does not change the color of the light that goes in.

The pupil is the hole that lets light in. The pupil looks black because it is dark inside your eyeball.

Try this. Have a friend sit in a dark room for a few minutes. Then add just enough light so that you can see their eyes. Don’t shine a light right at them. Now have them go out into a sunny day. Look at your friend’s eyes. You should see the pupils get smaller as your friend goes into the bright sun.

Thanks for asking,

Click Here to return to the search form.

University of California, Santa Barbara Materials Research Laboratory National Science Foundation
This program is co-sponsored by the National Science Foundation and UCSB School-University Partnerships
Copyright © 2020 The Regents of the University of California,
All Rights Reserved.
UCSB Terms of Use