What are Tegra lenses?

Lighter and thinner than plastic lenses, VISION EASE Polycarbonate Semi-Finished Single Vision Lenses are 50% lighter and thinner for greater comfort and a more attractive appearance. The durable scratch resistant coating, Tegra, stays put longer, extending the life of the lenses.

Is Trivex thinner than polycarbonate?

Polycarbonate lenses are about 10% thinner than Trivex lenses. Weight. Trivex lenses about 10% lighter than polycarbonate lenses.

What is the difference between Trivex and polycarbonate lenses?

Thickness: Polycarbonate lenses have a higher index of refraction than Trivex lenses, but not by much (1.58 vs 1.53). Trivex lenses have a higher Abbe value so they can produce both sharper central and peripheral vision with less chromatic aberration than polycarbonate lenses.

Are Trivex lenses scratch resistant?

Materials for Glasses: Trivex Is a New Lens Type These materials are resistant to scratching, easy to clean, and easy to shape to the right prescription strength. Polycarbonate lenses are a version of plastic lenses that provide impact and scratch resistance.

What color are polarized lenses?

The most common colors of polarized lenses are gray and brown. However, depending on the manufacturer, many other colors may be available. Green, yellow, or melanin color are also very popular colors.

Can trivex lenses be polarized?

Trivex is the first new lens material to be offered in the Coppertone Polarized Lenses line since its polycarbonate introduction in 2007.

What are the disadvantages of polycarbonate lenses?

There are also some disadvantages of polycarbonate lenses:

• You get what you pay for. Polycarbonate lenses can cost up to double the price of regular eyeglasses.
• Less durable than Trivex lenses.
• Lower Abbe value than regular plastic or high-index lenses.

At what prescription should you get high-index lenses?

A high-index lens may be recommended if your optical prescription is above 2.00 diopters. High-index lenses have a refractive index above 1.50— ranging from 1.53 to 1.74. The image below compares the lens thickness of a regular plastic lens (1.50) to the most commonly prescribed high-index lenses.

What are the most scratch-resistant lenses?

Glass
Glass offers superior optics and is the most scratch-resistant material available. However, glass must be specially treated for impact resistance. Glass is also much heavier in weight and not offered in many designs. Glass lenses can only be put into specific frames.

What color polarized lens is best?

What’s the Best Polarized Lens Color for Driving? This often comes down to personal preference, but the best lens color options for driving are usually gray or amber. Gray is generally better for bright, hazy, sunny conditions. Amber is often better for cloudy, overcast days and rain.

Are trivex lenses worth it?

Trivex lenses tend to cost more than polycarbonate or standard plastic lenses. But if you want what many eye care professionals consider to be the best combination of safety, comfort, appearance and optical performance for most eyeglass prescriptions, the Trivex price tag may be an investment worth making.