These affordable blue light blockers are designed for night time use.They have adjustable arms and the wrap around design blocks out more blue light from computer screens, moblie phones, TVs, Flourescent and LED lights.The orange lenses absorb light spectrum less than 520nm.
They fit over the top of your prescription glasses and aid in a much better and deeper sleep when worn 2-3 hours before bed time.
You have to admit they look pretty cool too !!!
check out the following article for all the science behind these glasses