- Per the Occupational Safety & Health Administration: The preferred viewing distance for VDTs ranges between 18 and 24 inches
(45.72 and 60.96 centimeters, respectively)
- Filters 100% of the most damaging low-level blue and nearly 40% high energy visible light from tablets, phones, TV, computers and more.
- Our lenses code is BB40 for the Eyekeeper violet block glasses.
- If you want to custom the different strength for each eye please let us know.
Performance via spectrum analyzer
40% blue light blocking for wavelength 395nm-500nm
Data for Eyekeeper BB40 Lens