polycarbonate lenses vs trivex

Trivex Lenses vs polycarbonate lenses In situations where clarity is key, you may wish to invest in Trivex lenses for their higher Abbe value, and so increased visual clarity. I generally recommended people with prescriptions anywhere between +/-0.50 to +/-4.00 to go with polycarbonate lenses. 1. Everything that I'm finding is that Trivex is at a 1.53 compared to 1.58 Poly. Trivex® tri-performance lens material by PPG is a breakthrough optical polymer that offers the impact resistance of polycarbonate with excellent optics equal to CR-39 and glass. In this area, Trivex wins hands-down. It would seem the Trivex is only a tiny step up from basic plastic lenses (1.50) when it comes to wearing bottle caps or not. It was not until 1953 that research began to commercialize the material. Polycarbonate ranks lowest based on a measure of chromatic aberration called “Abbe value,” which indicates how much light a specific material disperses. Trivex Lenses vs polycarbonate lenses. Yet its specific gravity made it the lightest of any lens material. In addition, Trivex also has standard UV protection. I have always heard that Costa glass lenses (580g) are clearer than their polycarbonate lenses (580p). These are thinner and lighter than the traditional eyeglass frames. Polycarbonate lenses have an index of refraction of 1.59, and will generally be about 20% thinner than standard plastic lenses. Trivex Lens Material vs. Polycarbonate Lenses Polycarbonate and Trivex are common lens types used for children’s eyewear, safety glasses, and sports eyewear. However, some people complain that polycarbonate lenses fail to give them the crispest, clearest vision. 51 years experience Ophthalmology. Like the 1.61 and 1.67 high-index lenses, it has an aspheric surface, improving the wearer’s visual quality while … Polycarbonate looked like a champ amongst lens offerings. Compared with polycarbonate lenses, Trivex® is a premium material that provides crisper vision and is 10% lighter. Trivex is the preferred alternative to polycarbonate when the lightness of your lens … TRIVEX Trivex, like polycarbonate, has superior impact resistant qualities. Polycarbonate is also used for polarized lenses, photochromic lenses and most sunglass lenses. Like polycarbonate, lenses made of Trivex are thin, lightweight but are even more impact-resistant than polycarbonate. Trivex lenses were created by PPG Industries to be a direct competitor to polycarbonate lenses. 2. The refractive index of a material is a number that measures how well the material refracts and bends light, which depends on how fast light travels through the material. Not to mention, Trivex resistance to stress and cracking makes for a durable lens material when it comes to combatting the normal wear and tear sunglasses experience in everyday life. Trivex became the only material to pass the FDA impact resistance test as a lens material besides polycarbonate in 2001. The real winners are materials such as Trivex, CR-39 and Crown Glass. In fact, breaking a thin polycarbonate lens would require bending it back and forth several times. Trivex lenses are composed of a urethane-based monomer and are made from a cast moulding process similar to how regular plastic lenses are made. Additionally, if you have a stronger than average prescription you may wish to invest in Trivex to avoid annoying abnormalities in your daily vision, such as haloed lights or a distorted peripheral vision. And note that polycarbonate lenses, which are natural UV blockers, offer 100 percent protection, as do many high-index lenses, Vitale says. trivex lenses vs polycarbonate. It’s unavailable as a polarized or photochromic lens. A 36-year-old member asked: are polycarbonate lenses helpful? They can be useful if … And Then Came Poly Polycarbonate is still lighter, and can be made in higher index – meaning that a strong prescription lens can still be quite thin. However, today I was at an optical store where they said if you order 580p prescription lenses (which I do need Rx) that the polycarbonate lenses are “Trivex” (something that is not available in the non-prescription polycarbonate lenses). The CR stands for “Columbia Resin” which is the polymer that the material is made out of and the 39 means that there were 38 other “Columbia Resin’s” that didn’t make the cut for optical lenses. In 2001 a rival lens material called Trivex was developed. Trivex Lenses: Is a relatively new material that is similar to polycarbonate lenses but with higher quality optics, and thus provides clearer vision. Trivex Lenses vs polycarbonate lenses In situations where clarity is key, you may wish to invest in Trivex lenses for their higher Abbe value, and so increased visual clarity. Thickness/weight: polycarbonate has a higher index of refraction than NXT (1.58 vs. 1.53) and a lower specific gravity than polycarbonate. It is lighter and more scratch resistant and has high-impact resistance like Polycarbonate. If thinness is important to you, then you should consider these other two alternatives. Trivex has a lower specific gravity than polycarbonate, making Trivex lenses about 10 percent lighter than polycarbonate lenses. The refractive index of a material is a number that measures how well the material refracts and bends light, which depends on how fast light travels through the material. Mid-index lenses, such as 1.54, 1.56, and 1.57, are thinner than glass, and nearly as strong as CR-39. Trivex Lenses. Trivex Lenses vs polycarbonate lenses. When to Use Polycarbonate. Just like the 1.53 mid-index Trivex and 1.59 polycarbonate lenses, the 1.74 lens cannot be tinted. Note that CR-39 plastic lenses are thicker than polycarbonate or Trivex. Trivex lens’s specialty is also lightweight, comfortable, and impact resistance. licensed opticians will always advise you individually on the best choice between Trivex or Polycarbonate for your kid’s eyewear lenses. Hopefully these facts arm you with a bit more information about the qualities – and distinctions – of Trivex and polycarbonate lenses. Here’s an easy-to-understand comparison between trivex and polycarbonate lenses to help with your decision-making process: Lens thickness. Both lenses have comparable impact resistance and offer 100% UVA/B protection. The lower numbers are classified as mid-index lenses. The cast molding process is included the same as in plastic lenses making. Polycarbonate has a higher index of refraction than Trivex (1.58 vs. 1.53), so polycarbonate lenses are about 10 percent thinner than Trivex lenses. Plastic Lenses (CR-39) Plastic lenses or also known as CR-39 is the most common optical lens material you will find. Trivex is an improvement over Polycarbonate. Like polycarbonate, they are thinner (by 20%) and lighter than standard plastic lenses and offer excellent impact resistance. Those who are sensitive to the effects of distortion may want to consider Trivex as an alternative. Not a huge difference, but, to some, these things matter – with polycarbonate lenses coming in around 10% thinner. Dr. Richard Bensinger answered. Opticians recommend these types of plastics because of their UV protection and high-impact resistance. Additionally, Trivex is commonly used as a lens material because of its high-velocity impact and has been increasing in application and market availability. Additionally, if you have a stronger than average prescription you may wish to invest in Trivex to avoid annoying abnormalities in your daily vision, such as haloed lights or a distorted peripheral vision. Polycarbonate or Trivex are the most protective eyeglass frmaes. 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