FLASH to MIRROR coatings are a bit lighter version of mirror coatings. As mirror coatings reflect up to 80% of visible light, flash mirrors reflect up to 20%. This way photochromic lenses coated with flash mirrors can be worn both outdoors and indoors. While being outdoors lenses look like mirrors and indoors they stay clear as photochromic layer returns to clear state.

Inner side is coated with Clarus Sericum UV coating which protects eyes from back surface UV ray reflection. The coating is scratch resistant, has ultra-hydrophobic and oleophobic layers.

Currently flash mirror coatings are available in blue and green colors.