Crizal technical information | Materials & Treatments

Dust Repellent Efficiency

Crizal A2 repels dust thanks to new i-technology™ adopted from the science of astronomy and fiber optics. With i-technology™, a very thin conductive layer is added to the lens surface. This eliminates any negative electrostatic charge that is normally generated by wiping the lens. As a result, Crizal A2 lenses remain completely transparent and virtually dust free.

Without I-Technology™	With I-Technology™
When a lens is covered with dust, it needs to be cleaned.	Covered with dust, the lens needs to be cleaned.
Wiping generates negative electrostatic charges on the surface of the lens.	By adding a conductive layer, wiping does not generate any negative charges.
After wiping, the positive dust particle are attracted by the negative electrostatic charges.	After wiping, dust particles are Not attracted back.
Consequently, the lens is never really free of dust or perfectly clean.	The lens is virtually free of dust and perfectly clean.

Smudge Resistance

The high surface density process, HSD process™, increases the density of hydophobic and oleophobic perfluorosilane molecules on the lens surface.

This means the surface of the new Crizal A2 lens is thoroughly covered. Smudges and water droplets are repelled from the surface and smudge resistance is improved.

Improved Comfort of Vision: Reduces the intensity of disturbing reflections
More Cosmetically Appealing: Your patients eyes will be more visible, with reduced reflection
Easier to Clean: Cleaner, less dusty and less sensitive to smudge
Scratch Resistant: Less cleaning means lower risk of scratches