Color Dot Optical Illusion

Which circle is largest? Which is smallest? Which is most attractive to you? Which seems closest?

See Another Random Optical Illusion

Scroll down for the answer and explanation.

All of the color dots are the same size in this optical illusion.

Explanation

Our sense of color has a profound effect on our well being and health. Color sensation is actually due to changes in the frequency of the light that is detected by our eyes. Here's a link to a site discussing information about color, and it's potential to affect health.