The blue color in eyes actually has nothing to do with their pigment. A surprising light trick sets blue peepers apart from brown.
How Eyes Perceive Color, TekWay
Blue Eyes: How Rare Are They?
What is the rarest eye colour in the world? - BBC Science Focus Magazine
Countries With The Most Blue-Eyed People - WorldAtlas
Change eye color: What to know and how to change it
New technique changing eyes from brown to blue sparks debate - Medill Reports Chicago
Blue eye - Stock Image - C015/1978 - Science Photo Library, blue eye
Eye Color: Physics or Genetics? - Atlantic Eye Institute
What Is My Eye Colour?
The Science of Eye Color Fort Lauderdale Eye Institute
Eye Color Trivia – Hamilton OH
How Eye Color Develops and Changes
Blue Eyes: What Causes Them and How They Affect Health
Read Insights about 7 Interesting Facts About Blue Eyes from Auckland Eye
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