Size DescriptionA - Total Width - 5.
It's not unusual to spend several hours looking at your screen each day. 25" (135 mm)B - Eye Height - 1. How does it work? 5" (145 mm) They're designed to: reduce glare (a major cause of eyestrain), increase contrast, and maximize what you see through the lenses making it easier to look at a screen for longer periods of time. Digital Eye Strain & Headache Relief - Blue Light Blocking GlassesPeople spend more time on their devices than ever before.