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Blue Light, Sleep Light

The picture-perfect nighttime routine never carves out time for screen time before bed. In fact, most people describing their “perfect nighttime routine” will say they put their phones away anywhere from 2-3 hours before they’re heading to bed! What’s the reason for this? The issue with blue light Blue light, the kind of light being…

Uncut prescription lenses

Allentown Optical’s Digital Lens Introduction Never Use A Conventional Lens Design Again

Traditionally, progressive lenses have been produced using a molded blank that incorporates the progressive surface on the front side. These progressive blanks are produced in large quantities, and are available in multiple materials, each with a range of base curves, each with several add values. The wearer prescription is generated using traditional equipment to cut…