A blog post of mine explains why I switched to CR-39 for computer work: http://scottlburson2.blogspot.com/2016/01/lcd-backlights-and-eyeglass-lenses.html http:/

A blog post of mine explains why I switched to CR-39 for computer work: http://scottlburson2.blogspot.com/2016/01/lcd-backlights-and-eyeglass-lenses.html http://scottlburson2.blogspot.com/2016/01/lcd-backlights-and... I've learned since then that RGB LED backlights, specifically, are not actually all that common, as other wide-gamut technologies become more common -- GB-r and RB-g, which use two colors of LEDs and a phosphor for the third color; and quantum dots. This doesn't change the outcome, though, as these technologies also produce spectra with a wider spacing between red and green peaks than the old CCFLs or WLED. I wear my CR-39 glasses all the time (except for driving or biking) and am quite fond of them.