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The SPEK journal. Built outside. Tested outside.
A high-contrast lens brings out the detail by filtering out the in-between wavelengths of light. Here is how SPEKTRA+™ technology sharpens your vision.
Photochromic lenses darken in full sun and lighten under coverage. Here is how EVO+™ technology works and why...
VLT, or Visible Light Transmission, determines a lens' tint. Here's how to read the S0 to S4 categories...