For blue light glasses to work effectively, enabling you to maintain a healthy circadian rhythm, you should ensure you buy blue light glasses that also block green light and that they wrap around the eyes. Many brands out there are designed for style but they omit to wrap around your eye socket, which creates problems as this allows blue and green light to enter from the sides of your glasses. Pick a pair of glasses that wrap around the eye socket, to block out light from entering your eyes from all angles.