Step 1:

An uncut photochromic lens blank, produced by Corning®, is ground and polished.

Step 2:

The lens blank is put through a Lehr furnace and hydrogen fired where the lens color, photochromic properties, and Spectral Control filters are received.

Step 3:

For polarized lenses only, after the hydrogen firing process, the lens is then placed on a piece of polarizing film and clear UV400 glass and sandwiched together creating one lens.

Step 4:

The lens is then chemically hardened for maximum impact resistance.

Step 5:

The lens is taken and placed into a vacuum coating and an anti reflective coating is applied.

Step 6:

The lens is then cut and polished to fit perfectly into a Serengeti metal or plastic frame.

Step 7:

Each lens is drop ball tested before and after assembly.