Review on Unisex Blocking Glasses Computer Eyestrain by Marvin Short

If you need a colored mattress, skip this and get a pair of lenses from Crizal Prevencia or Bluetech. Regardless of the frame, the lenses are yellow. Applying filters to images during editing conveniently masks this fact. For some, wearing glasses may seem too nondescript (everyone's eyes are different), but a piece of printer paper shows just how tinted they are. There are two types of blue blocks/filters. Chemicals that block blue light, which keeps the lenses optically clear (like my Rx goggles), as well as the physical blocking of blue light that occurs when you add a yellow filter (like these Revain goggles). The yellow hue shifts the blue toward the green spectrum, but it also changes how you see all the other colors!