Is CR-39 A trivex?

And we do not think about kids’ eyewear without thinking about lens materials. The typical lens material for a long time has been polycarbonate. Seven years ago we’d a newcomer to the lens material arena. Found that 75% of high prescription patients have a desire for more appealing and discreet eyeglass lenses. High Index lenses offer you the ability to provide them with the thinnest, lightest lenses they have ever worn. Trivex was introduced to the optical market in 2001 and has gained much popularity.
would be difficult to find an improved overall material in most of wearers than CR39. In high power lens prescriptions, CR39 is normally not the best choice in order to avoid unappealing edge profiles or thick lens centers. POLYCARBONATElenses are thinner and lighter than regular CR-39 plastic lenses. In addition they offer 100% protection from the sun’s harmful UV light and so are up to 10 times more impact-resistant than plastic or glass lenses.

  • Lenses can be made just a little thinner due to its refractive indice.
  • Anti-reflective coating , scratch coating, UV protection, and anti-fog treatment are also open to “tweak” the properties of one’s glasses to just how you want them.
  • This construction feature of Trivex® results in a lens that with less internal stress which produces sharper central vision and fewer distortions through the peripheral or outside elements of the lens6.

Although only slightly more costly than regular plastic, polycarbonate is a lot more impact resistant lens material and the added hardness of the lens helps it be naturally scratch resistant. Therefore, polycarbonate is really a perfect lens material for children or even adults that are hard on their glasses.


To follow the world markets fashion, new products are continued researching and providing to guarantee our competitive advantage in styles, quality, price and service. CR39 has the lowest chromatic aberration of any material commonly used to make glasses.

  • Patients will love thinner, more comfortable eyeglasses with high-index lenses.
  • The higher the quantity, the less level of material is needed to bend the light.
  • Having glass break or shatter so close to the eye from a flying rock or an urgent tumble can cause a truly dangerous and vision threatening situation.

On the other hand, CR-39 plastic would require a special UV protection coating for outdoor use. The optical quality of polycarbonate is sufficient for driving, walking, and other outdoor activities. Polycarbonate’s lighter weight and toughness are ideal for athletic activities. However, this material is relatively soft and can need a scratch protection coating. Although it doesn’t quite have the optical quality of glass or the scratch resistance of glass, it’s much lighter and safer. This safety aspect is essential because it doesn’t shatter like glass.
Glass shards entering the eye could cause severe injury. Clearly, controlling one’s cost of goods while delivering fashionable, attractively-finished prescription eyewear are important business concerns. But also for those ECPs who’ve yet to be won over by Trivex, it’s time and energy to reconsider. Can you imagine an optical business trying to survive today by offering only glass or CR-39 lenses, the preferred materials from the 20th century? Trivex’s unique mix of optical and performance characteristics makes a persuasive case that it’ll become the benchmark against which all the lens materials will undoubtedly be judged in the 21st century.

Plastic Lens

The big advantage of Trivex over polycarbonate is its better optical quality, which means your vision is sharper. If you work with your glasses for indoor reading or computer work, as well as your prescription level isn’t too much, then plastic works fine. If you don’t want to fuss too much about its care, a protective scratch coating is a good idea. Remember that CR-39 plastic lenses are thicker than polycarbonate or Trivex. If thinness is essential to you, then you should consider these other two alternatives. Other high-index materials are classified by numbers.

So now your same nearsighted prescription can be corrected with less material to improve the same amount of nearsightedness. Polycarbonate lenses came on the scene in the 1970s. This material was originally developed for Air Force helmet visors, as well as “bulletproof glass” used in locations like banks. It’s lighter and many more impact-resistant than CR-39 plastic, and it’s often used in children’s eyewear, safety glasses, and sports eyewear. Another good thing about polycarbonate lenses is that they have built-in UV protection.

It’s that time of year when we start thinking about back again to school and children’s eyewear. Lenses, high index lenses are strong and a good option for drill mounts. While we get plenty of training on these services I find that most of us question when to utilize high-index lenses and why. Many do not understand the benefits and fear the drawbacks. From specialized Single Vision products for young readers to totally compensated digital progressives offering wide field of views. SCRATCH TREATMENThelps prevent scratches from damaging your lenses.

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