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Xtra Fast - ST-OPTICS

ST-OPTICS

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Semi-Finished

Photochromic

Index 1.60 & 1.67

XTRA FAST 75mm

Xtra Fast is our new high refractive index 1.60 and 1.67, high quality photochromic lenses. Patented Spinning coating that ensures unified color distribution over the lens structure and durability. Quickly changing from a crystal clear vision inside with a faster activation and Xtra Fast fade to clear, meanwhile a high protection level 400y 410 of UV.

Features and technical information:

  • Refractive indices: 1.60 / 1.67
  • Material: MR-8 / MR-7
  • Design: Spherical
  • Density: 1.30/1.35
  • Abbe value: 41 / 32
  • Diameter: 75mm
  • UV: 380
  • Available certifications: ISO 9001, CE, FDA
  • High performance in light adaptation

Advantages:

  • Darkens quickly
  • Extra Diameter of 75 mm
  • High protection level 400 and 410 UV
  • Long duration
  • Can be used on any rim/rim including slotted, open, 3 pieces
  • Thinner and thinner than traditional lenses due to its 1.60 and 1.67 index
  • Suitable for high myopia
  • Tailor-made for breakthrough Free Form processing
  • OPC codes available for your LMS
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