'Safe' screens touted for those who just can't look away

As it gets harder to tear our eyes away from smartphones, televisions, tablets or computers, concerns are growing over a blue light emitted by their screens, blamed for harming the retina and causing interrupted sleep. At the IFA mega consumer electronics show in Berlin, Dutch company Philips is showcasing a new technology for its computer screens called "SoftBlue," which it claims is gentler on the retina. "We are shifting the harmful blue light frequencies, which are below 450 nanometers, to above 460 nanometers," said Philips' marketing director Stefan Sommer.