Our blue light glasses help filter blue-violet light* from the sun and artificial sources, including digital devices. With three strengths in each lens, multifocal readers take the work out of seeing clearly.
*Filters at least 30% of blue-violet light. The percentage refers to the average amount of blue-violet light (between 400-455nm as stated by ISO TR 20772:2018) filtered as measured in 5 nm increments. Covered under U.S. Pat. No. 8,360,574. Other U.S. and foreign patents pending.
