Medically reviewed by Christine L. Larsen, MD Photophobia is an abnormal sensitivity to light. It is associated with dry eye ...

Like most human traits, blue eyes are determined by genes, and no two people have exactly the same hue. It works a lot like ...

While not the rarest, hazel eyes are also not the most common eye color around. Blue-eyed folks may be rarer, but their eye color has a fascinating history. All blue-eyed people can trace their ...

Brown eyes are the most common in the world compared with blue and green. This may be the world's most prevalent eye color — approximately 79% of the world population has some shade of brown ...

The exact cause remains to be determined, but scientists do know that eye color began to change long before recorded history began. The following is a transcript of the video. All blue-eyed people ...