Lens thickness upgrades (Add to Base Price)
£0.00
Lens thickness upgrades, Or refractive index.
The higher material index density determines the thickness of lenses for a given lens power.
Standard Base lenses index = 1.5
UPGRADE TO 1.6, 1.67 OR 1.74.
1.74 IS CURRENTLY THE THINNNEST AND HIGHEST INDEX AVAILABLE IN PLASTIC LENSES.
(1.6 or 1.67 index lenses must be selected for Rimless glasses frames )