Blue Block – Semi-finished – SOMO 1.74 UV420+ Blue Block Spherical

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SOMO Spherical 1.74 Hardcoat UV420+

Base Curves: 1.00, 2.00, 3.00, 4.00, 5.00, 6.00, 7.00, 8.00, 9.00, 10.00
  • UltraThin and Lightweight
  • 50% Thinner and 50% lighter then CR39 Lenses
  • 27% Thinner than Polycarbonate
  • 15% Thinner than 1.67 Index
  • Minimize Distortion at the Edge of Lens
  • Ultimate Lens Design Technology
  • Best Cosmetics by Reducing “Eye Shrinking” Appearance of High Power Prescription
  • Hi Index
  • Scratch-Resistant Coat
  • UV420 – up to 420nm of Ultra Violet Protection
  • Bonus Feature- Blue Block Protection
  • UV420 & Blue Block is part of the monomer


  • Spherical Design
  • 1.74 Refractive Index
  • 1.47 Specific Gravity
  • 33 Abbe Value
  • Scratch-Resistant Hardcoat
  • Blocks UVA and UVB as well as High Energy Visible Light
  • Maintains Clear Visibility while blocking harmful light
  • Single Vision Semi-Finished recommended for Free Form processing

 GO GREEN with our first bio-based lens!

Get To know UV420+ Blue Block Products:

A lot of confusion falls with people believing that all blue light is bad.  This is not true. We all need blue light to view colors and for our personal circadian rhythm. If you use a blue light tester pen, you must understand the blue light properties.  The blue light wavelength in the laser pens are 405nm. When testing our UV420+ lenses, the laser pen light will not pass thru the lens; yet some blue light will filter through- this is not harmful blue light.  Our UV420+ will block up to 420nm, rendering the tester pen with 405nm not compatible for testing. You end up missing the point of the tester pen.

UV420+ products block ultra-violet lights up to 420, as a bonus feature, it blocks harmful blue light.