1.76 INDEX

The World's Thinnest and Highest Refractive Index Organic Lens

The world’s highest refractive index plastic lens 1.76 material, created by the advanced material development technology of TOKAI OPTICAL, a specialized manufacturer of eyeglass lenses, has been used and loved by many people around the world for a long time. The 1.76 material, which boasts the world’s highest refractive index among plastic lenses, has been highly evaluated in markets around the world for its “amazing thinness” and “outstanding comfort” since the introduction of the double-surface aspheric design, and continues to lead the spectacle lens scene.

Tokai’s 1.76 lens leads the world in the ultra high index category. In pursuit of the thinnest and lightest lens possible, Tokai have successfully combined this new 1.76 index material with it’s in-house premium progressive and single vision designs, moving this level of lens technology to new and undiscovered heights.

Technical Specifications
Specific Gravity (g/cc): 1.49
Abbe Number: 30
High transparency: 99%

*1.76 index is available in the following options:

• Clear lenses
• Blue Filter lenses​
• Photochromic lenses

To learn more about this product, please visit Tokai's product page here.