Specifications: 

CR-39 Resin 1.56 index Myopic lenses

Coating: CR-39 Resin  HC TCM UV400 EMI Anti-Blue

Color: Clear

Perfect for eyewear frames with prescriptions that have an SPH -.50 ~ -6.00; CYL: -.50 ~ -2.00  to S PH 4.00 ~ 6.00  CYL -.50 ~ -2.00

The price on the page is for 1 pair (2 lenses) 

Blue light blocking glasses are made with  lenses that block or filterout harmful blue rays that emit from computer screens on phones, laptops, computer screens and tablet screens. The lenses keep your eyes protected from glare and potentially reduce eye health problems the retina sustains during prolong exposure to blue light. 

This lens also has an anti-electromagnetic radiation surface coating. This invisible barrier filters out 100% electromagnetic radiation waves and does not produce static electricity. This in turn offers even more protection for the eyes.

They are not polarized.

For accurate ordering of lenses please see the How to Choose Lenses Index charts in this product page. If you require any additional assistance please contact us via our customer service email at [email protected].