Several genetic markers contribute to our final eye color shade. A baby born with blue eyes can have brown eyes by their 1st birthday.

Such archaeological evidence contradicts the idea that the need for sunlight to ... "It's like turning a light switch on or off. If you turn the switch on the eyes will be brown.

Nearly two-thirds of babies were born with brown eyes ... sun damage. In irises with little melanin, the blue colour comes from the way the fibres of collagen at the back of the iris scatter light ...

Natural blue light helps regulate your circadian rhythm, or wake-and-sleep cycle. Sunlight is also instrumental in children's eye development. There's some evidence that the lack of natural blue ...