- Blue light filters are extremely popular, because we all spend an average of 5.5 hours a day behind screens. With these glasses you protect your eyes against the radiation of screens, so your eyes become a lot less irritated and you sleep better at night. Please note: a blue light filter creates a yellowish glow over the lenses. These glasses have a classic design, are super light and are very comfortable due to the flex temples. Aspherical cut and scratch-free glasses with a blue light filter for less eyestrain and can be used as computer glasses. Available in 5 different strengths: +1.00 +1.50, +2.00, +2.50, +3.00 and in different colors. Case included.