GSRx Now Has Trivex!

We’re excited to announce that Trivex lens material is now available for all epik lenses, as well as GSRx finished and stock single vision.

Trivex offers some great advantages for both adults and kids.  It is the only material other than polycarbonate that has passed both the FDA Impact Resistance Test (at 1mm center thickness) and the High Velocity Impact Test, and meets ANSI Z87.1 '89 standards.

The drawback of polycarbonate has always been optical quality: with an Abbe value of 29, it has the highest chromatic aberration of any common eyeglass lens material.  Trivex, however, has an Abbe value of 45, making it superior both to poly and all higher-index lens materials.

Trivex’s refractive index is significantly lower than poly’s (1.53 vs.1.58), so an increase in lens thickness may be noticeable with stronger Rx’s.  But Trivex’s specific gravity of 1.11 makes it the lightest lens material available today.  
​
According to PPG, the manufacturer of Trivex, patients with prescriptions of -3.00 to +3.00 will get the greatest benefit from Trivex.  And the superior optics and high impact-resistance makes it perfect for kids.

Trivex is available with Transitions® and is fully compatible with INFINITY and INFINITY CLEAR non-glare coatings.