Did you know your cellphone is emitting a potentially harmful blue light? Entrepreneur Gigi Mortimer noticed her son, Nick, couldn’t get to sleep after being on his phone. UC Irvine ophthalmologist Dr. Andrew Smith agrees. The blue light can decrease melatonin, which is the hormone that regulates the sleep-wake cycle. So Mortimer worked with the UC Irvine doctors and came up with Eye Just, a clear screen protector that claims to block the harmful blue light coming from your phone.