Did you know 75% of UV radiation is transmitted through the lenses of children under 10? That is because the crystalline lenses inside a child’s eye does not yet have the natural chemical blockers that absorb UV radiation. At birth the lens is 100% transparent. For those under 10 about 75% of UV is transmitted and by the age of 25 only 10% is transmitted; that is why children receive three times an adult’s exposure to UV annually. Kids spend more time outdoors, so they are more at risk for eye conditions caused by UV damage to the lens and retina.