Mahjong Bifocal Blue Guard Readers

Finally a high end blue filter BIFOCAL lens, VERY hard to find, with excellent properties to filter blue and UV light, as well as help reduce bright light induced insomnia. These are lined bifocal lenses and feature high end optical cr90 material, weaker power on top with stronger power located on the bottom. Classic rectangular eyeglass frame, incredible colors, and high quality tr90 flexible yet resilient plastic.
✔May prevent insomnia
✔Reduce eyestrain and fatigue from computer use
✔Minimizes glare on video calls

• Choose from Large or Medium
• Large size is 5-2/3" x 1-1/2" for wide faces or mm frame optical measurements 56-17-145
• Medium size is 1-1/2" x 5-1/3" for average face sizes or 53-17-140 optical frame mm measurement
• These are not hidden bifocals, they have a line on the outside of the lens. However, the optics and light filtering properties are high quality.
• Hard case included

This product has no power on top, with the bifocal reader on the bottom. Are you looking for two powers? Check out our Dual Strength Bifocal Section, which can also be purchased with Blue Guard computer lenses.