Choose glasses that are sturdy, attractive, shatter-resistant, comfortable â and easy to wear. One is slightly thinner and lighter than the other, but as noted the difference is very small, too small to guide a decision. Standard or 'regular' lenses are made from a plastic known as CR39 and have a 1.5 index. polycarbonate vs cr39. 14 Avg. Plastic or glass lenses? In terms of thinness, this lens index is thinner than 1.50 lenses. Trivex is a relatively new optical lens material. Weight. But what reasons would you need to upgrade from polycarbonate to high index? CR-39 Plastic lenses: Initially produced as a lightweight alternative to heavy glass lenses and are now the smart choice for moderate prescriptions. They can be made with CR-39, polycarbonate, or high-index lenses. Polycarbonate: A variety of benefits that make it the most versatile of todayâs lens materials. Below you will find a breakdown of each material so next time ⦠Acrylic is also less expensive than polycarbonate and unlike polycarbonate, acrylics can be heated and molded to shape, then heated again while retaining its quality appearance. Theyâre more affordable than Trivex and are only moderately heavier. However, Trivex lenses have a much higher abbe value (43-45) vs. polycarbonate (abbe value 30) making it much better in optical clarity with fewer chromatic aberrations. They can sharpen your sight even further if you apply an anti-glare coati⦠They are usually between 0% and 5% transmission of these rays. -Uncoated CR39 is the most porous of lens materials, making it easier to get a darker tint than other materials.-Hard coated CR39 is still easier to tint than polycarbonate since the hard coat does not need to be as dense. Polycarbonate lenses are naturally 100% UV blocking and extra durable. (This image shows the difference in thickness of a standard 1.5 index lens & a 1.74 index lens - typically 50% thinner) Thankfully, polycarbonate and nearly all high-index plastic lenses have 100 percent UV protection built-in, due to absorptive characteristics of the lens material. Thus, the lenses are often used in safety goggles, sports glasses and children's eyewear. 16 Avg. It has the ultraviolet blocking properties (380 nanometers and less) and shatter resistant properties of polycarbonate. Trivex is an improvement over Polycarbonate. The lower numbers are classified as mid-index lenses. The Varilux Physio CR39 polycarbonate lens is available in this range: -8.00 to +6.00 sphere, -3.00 to +3.00 cylinder, and up to +3.00 add. Polycarbonate 1.59 lenses also feature great impact resistance and work best if your prescription is +3.00/-4.75 or above. The higher the number, the thinner and lighter the lens. Optimization Opportunities Optimization Opportunities. Polycarbonate is a common lens material that is notorious for high chromatic aberration, and at -7 diopters, your prescription is strong enough that youâd notice. Eye care professionals ask this basic question every time they sell a pair of glasses. Tribrid is newish (2013) and targeted for stronger prescriptions in the +/-3.00 to +/-7.00 diopters range. Either has advantages and disadvantages. Optimizing for buyer keywords. However youâre a moderate myope and with a large frame the lens thickness would only be exaggerated. The 411 on Lenses. When it comes to contact lenses, sometimes you just canât find the information youâre looking for. While relatively the same thickness as polycarbonate (depending on the prescription), trivex is about 10% lighter than polycarbonate lenses. If you need to get your sunglasses faster, they offer a $7 option for 2-4 business day shipping. In fact it is a lens without weakness! The refractive index 1.59 is "pure" polycarbonate material, while the 1.57 is a "composite" of polycarbonate and typical plastic. High-index plastic lenses have a refractive index between 1.6 and 1.74; the index of ordinary plastic and polycarbonate lenses is 1.5 and 1.59, respectively. Essilorâs polycarbonate lenses are 20% thinner, 30% lighter, and 12x more impact resistant than standard plastic lenses. This is due to CR39âs being naturally less prone to scratching than Poly. Anyone who wears glasses knows the difficulty of certain activities is increased because you must keep your glasses on your face while active. Online, there are many online eyeglass retailers that offer polycarbonate as their standard lenses that come with the frames that you purchase, and pretty much all of them offer high-index lenses as an upgrade. Polycarbonate lenses can not be repaired, when purchased with an Anti Reflex coating. The following holds true for both materials: Choosing the most suitable one hinges on individual factors such as visual acuity and personal taste. For people that love the Zeiss brand Read More The Zeiss CR39 lens is a good choice for corrections up to +/-3.00. Traffic to Competitors . Polycarbonate vs. Trivex Lenses: A Quick Comparison. It is lighter and more scratch resistant and has high-impact resistance like Polycarbonate. uvex catalogue. A wide-range of lens colors can be achieved with plastic CR-39 lenses. If your old lenses were smaller in general, the chromatic aberration would be less noticeable. Often, optometrists recommend polycarbonate lenses when safety is an issue. Plastic vs. Polycarbonate Lenses Today we are going to be talking specifically about plastic vs polycarbonate lenses and what the major difference is between the lens materials. Polycarbonate vs. Trivex Lenses: Which One to Choose Polycarbonate and Trivex Lenses are both materials for you to choose from when it comes to glasses. Trivex vs. Polycarbonate. Zeiss eyeglass lenses are made by Zeiss, the worldwide leader in optical lenses excellence. While they wonât work if you require glasses to see both near and far, polycarbonate lenses will suit most peopleâs needs, and they are suitable for an AR coating. Trivex vs. Polycarbonate: A Quick Side-By-Side Comparison Thickness: 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, but as you see in the video, the difference may not even be noticeable. It is the best material for mild to moderate prescriptions. Mid-index lenses, such as 1.54, 1.56, and 1.57, are thinner than glass, and nearly as strong as CR-39. The AR coating layer is made with SIO2 (which is glass) and applied with a vaporization process. Trivex also blocks 100% of UV radiation. This excellent Google answer regarding high index plastic lenses from March '06 provides many links that discuss various manufacturers offerings. Advantages: Superior impact-resistance. Posted at 06:14h in Uncategorized by 0 Comments Most people have questions about this kind of stuff, and itâs often hard to figure out where to start. Founded as a workshop for precision mechanics and optics in the German city of Jena in 1846, the Carl Zeiss Group of today is a global leader in the optical and optoelectronic industries. Trivex: 18 Organic Competition. But if you choose CR-39 plastic lenses, be aware that these lenses need an added coating applied to provide ⦠Trivex Lenses vs polycarbonate lenses. Polycarbonate vs. High Index Lenses. Here is a brief comparison of polycarbonate and Trivex lenses to help you decide which lenses might be best for you: Thickness. However, if your prescription exceeds -/+6.00, you should consider a high index 1.67 lens in order to minimize lens weight and thickness. Hereâs an easy-to-understand comparison between trivex and polycarbonate lenses to help with your decision-making process: Lens thickness. According to that, Optima offers the highest index refractory material (at 1.74) of the major manufacturers, but for safety, you may still want to think about polycarbonate lenses. Trivex lenses ($200 for single vision, $400 for progressives) are more scratch-resistant than either CR-39 or polycarbonate ⦠It's a little heavier (1.23 vs 1.11) than Trivex and slightly worse Abbe (41 vs 44) but has refractive index of 1.60 vs ⦠Traffic to Competitors . 19 Jan. polycarbonate lenses vs high index. You can select the thickness of your lenses at EyeBuyDirect by choosing a lens index. Polycarbonate lenses are less likely to fracture than plastic lenses or hi-index, so they are a great option kidsâ glasses. This is the type in which all inclusive frames are made with. Polycarbonate lenses ($9 to $205): Slightly higher quality than CR-39 lenses, polycarbonate lenses are more durable, thinner, lighter, and the most popular of all lens options. It is a unique material that combines the advantages of CR39, Mid-Index lenses and polycarbonate, but leaves out all their inherent weaknesses. Shady Rays offers 4-6 business day shipping for free. Both materials are an outstanding choice when it comes to prescription and non-prescription safety glasses. Thank you for the detailed response! A Vision Blog by LensDirect.com. The stronger your prescription is, the higher the lens index available to you. 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. How thick will my lenses be? 21 Organic Competition. Polycarbonate lenses are 10 times more impact-resistant than ordinary plastic lenses. 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