Polycarbonate lenses are about 10% thinner than Trivex lenses. ... Polycarbonate lenses provide both higher impact resistance and 100% UV protection naturally, taking care of the two main safety concerns when shooting outdoors. Polycarbonate panels have a few disadvantages when they’re compared to plastic or glass. Did you know you can now enter your prescription and buy online? Trivex lenses were introduced in 2001 by PPG Industries. Photochromic lenses are available in both materials. Photochromic lenses are available in Trivex as well. It may also impact the amount of color that some people can perceive when looking at information or watchin… It’s a requirement in North America for children to be in impact resistant materials. Although you can still see them when you have a direct line-of-sight, moving to different angles can make the screen disappear completely. 1. By their very nature and chemical makeup, high index lenses have distinct advantages over standard plastic or glass. The material is very soft compared to some alternatives, opening itself up to scratches more than plastic or trivex lenses. The biggest disadvantage is their high price. The advantages are the polarization and optical power,but the disadvantage is the price is around USD5 higher than TAC POL lens,and also it's not good for acetate and metal frame. Polycarbonate is more common in different lens designs than Trivex. Trivex lenses have a higher Abbe value and for higher prescriptions (>+/-4.00) may produce sharper peripheral vision with less chromatic aberration than polycarbonate lenses. Its superiority doesn’t mean polycarbonate lenses don’t provide a clear picture — just that glass offers more clarity. Contrast sensitivity testing: What is it? That being said, we hope we managed to shed some light on the advantages and disadvantages of polycarbonate lenses. When you are wearing glasses that have polarized lenses, then the chemical agents added to the product to create the filtering mechanism reduce the amount of light your eyes process from an LCD screen. These lenses have good impact resistance, making them ideal for children, sports and industrial work. Coronavirus (COVID-19): How eyes may play a role in its spread, Eye twitching: 8 causes, treatments and prevention, A bloodshot eye or red eye: 19 causes and treatments. They have exceptional strength and resilience. Poor scratch resistance. High price is one of the major disadvantages of polycarbonates. Weight Trivex has a slightly lower specific gravity than polycarbonate, making Trivex lenses about 10 percent lighter than polycarbonate lenses. 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. Eye allergies: Relief for itchy and watery eyes, How to get rid of a stye: Treatments and remedies, Glaucoma treatment: Drugs, drops and more, Computer eye strain: 10 tips to get relief, Digital devices and children: Protecting their eyes, Hyperopia (long sightedness): How to correct for it. Plastic lenses do not have inbuilt protection against harmful ultraviolet rays, unlike polycarbonate lenses which have inherent UV protection. Buy your contact lenses online and get free delivery. Contacts for teens: What age can you wear contacts? Weight and Thickness of the Lenses. Polycarbonate has a high price, It is much more expensive than the other plastics or the glass , It is as much as double the price of ABS, So, The customers opt for Acrylonitrile Butadiene Styrene ( ABS ) that is tougher, but it has lower impact resistance and heat resistance. P olycarbonate roofing sheets disadvantages. Give your hearing a check-up with our team of expert audiologists. There are a number of advantages and disadvantages to polycarbonate if they indeed can be labeled as such. And then polycarbonate lenses eyeglasses are much lighter than glass or plastic glasses, which make them more comfortable to wear. Unlike glass, the structures that use polycarbonate can be shaped like domes, igloos and many other fancy shapes that add a design feature to the building. They are high-quality, durable lenses which will protect their owner from multiples threats including physical damage and UV radiation. Disadvantages of Polycarbonate By Keith Allen Hunker may earn compensation through affiliate links in this story. For all their durability, flexibility, and impact resistance, polycarbonate scratches easily. The polycarbonate … Is it possible to get them polished or will I have to get new lenses? They have good impact resistance and are therefore ideal for children, sports and industrial purposes. The three main topics when discussing potential disadvantages of yellow-tinted blue-light-absorbing lenses are complaints of scotopic vision loss, altered color perception, and sleep disturbance. Are photochromic or tinted lenses suitable for driving in. This combination of lightweight comfort, UV protection and impact resistance also makes these lenses an excellent choice for children's glasses and safety glasses. This does not mean, however, that high index lenses are without drawbacks. Polycarbonate lenses are very resistant to tint in contrast to plastic lenses which accepts tints. – Optical quality is not as high as high index lenses or standard CR39 plastic. The advantages of this material of course are because of its properties. Not enough thinness. Your baby: Infant vision development timeline. These types of lenses cannot be tinted easily, either. The lenses in my specs are scratched. They will survive the impact of a steel ball travelling at 160 km/hr without shattering which meets EN/EU … Your optometrist can discuss the pros and cons of polycarbonate and Trivex lenses, and help you decide which lens material is the best choice for your needs and budget. It’s up to 10X more impact-resistant than high-index lenses and is therefore the ideal lens material for sports protective eyewear and children’s glasses. They began to doubt how safe it is to wear sunglasses with this material. Pop in for an eye test to give your eyes all the care they deserve. What are the advantages and disadvantages of polycarbonate spectacle lenses? Since then, polycarbonate lenses have become the standard for safety glasses, sports goggles, children's eye-wear and a variety of other uses. 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 or glass lenses? Property of resistance. Glass is superior in this category, which is why binoculars, telescopes, and cameras use it. Polycarbonate is by far the safest lens available. Blue eyes: The origin and genetics of blue eyes, How to clean and remove scratches in glasses, Eye and vision problems in preschool children. Polycarbonate lenses advantages and disadvantages. When carbon is bonded to three oxygen molecules by a condensation polymerization process, the resulting product is a polycarbonate material. Here are the advantages/disadvantages of each material: Glass: Glass was the original material prescription lenses were made out of, however, it is now used on a limited basis. sunglasses are very different from each other as the sunglasses have a set tint that protects our eyes from glares but they are not changeable whereas the photochromic lenses easily adapt to the nature of the light present around and changes accordingly. UV Protection. Here's what to look for, Guide to buying the best sunglasses for kids, Teens: Choosing sunglasses for a teenage boy or girl, Understanding how to read a contact lens prescription, How to use, put in and remove contact lenses, Lens care: Cleaning, disinfection and storage, LASIK eye surgery recovery & healing time expectations, 8 tips to reduce cataract surgery recovery time, LASIK procedure: A guide for what to expect, Eye and visual acuity tests and the Jaeger eye chart, Preparing for an eye exam: What to expect, Colour blindness tests and types of colour blindness, Macular degeneration: How to cut your risk, How to boost your diet to protect ageing eyes, Ageing eyes: Signs of eye problems in elderly, Red eyes in photos: How to get rid of the red-eye effect, Applying eye drops: A guide on how to put in eye drops. Answer: Polycarbonate lenses are made by injection moulding. Halloween season with a 9 year old means lots of time spent on costumes and parties. Trivex lenses, however, are composed of a urethane-based monomer and are made from a cast moulding process similar to how regular plastic lenses are made. In fact, I wear polycarbonate for my lenses. Polycarbonates are not very resistant to scratching, marring and abrasive surfaces. However, Trivex is about 10% lighter than polycarbonate. Specialty eyewear: Work, driving and safety glasses, Reading glasses: What to know before buying, No-line multifocal progressive lenses for a younger you, Polycarbonate lenses: Advantages and disadvantages, Best places to buy eyeglasses/where to buy, Kids’ glasses: 10 tips for buying children’s eyewear, How to find great glasses at a bargain price, How to choose the best glasses for your face shape, Glasses that suit your personality and lifestyle, Performance sports sunglasses: See better, play better, Best sunglasses for ultraviolet (UV) eye protection, Prescription sunglasses: A guide to the best lenses, Facts about sunglasses: A FAQ and buying guide, Polarised sunglasses: Best for reducing glare, Designer and fashion sunglasses: Look like a celebrity, Non-prescription sunglasses: What to know before buying, Buying kids' sunglasses? There is more distortion away from the optical center. Clarity: A lens that’s optically clearer provides a better picture. Lightweight and thinner than glass lenses, polycarbonate is more comfortable to wear for long periods of time. Polycarbonate and Trivex lenses both block 100 percent of the sun's UV rays without the need for special UV-blocking lens coatings. Polycarbonate lenses are made by injection moulding. First of all, they are so durable that they are hard to get shattered even in the roughest conditions. Trivex has a slightly lower specific gravity than polycarbonate, making Trivex lenses about 10 percent lighter than polycarbonate lenses. Photochromic lenses and polarized lenses i.e. Believe it or not, it has more advantages for sunglasses and for those who wear it. Polycarbonate or Trivex lenses are great if you, or a kid, plays sports. Disadvantages of Trivex Lenses . Polycarbonate lenses are made by injection moulding. Polycarbonate was developed in the 1960s for aerospace applications and is currently used for the helmet visors of astronauts and pilots and was used for the windscreens of the space shuttles. High-quality polycarbonate lenses are not the cheapest option on the market. Polycarbonate, being so strong and flexible, helps the structures it is used in to be more creatively designed. The lower weight allowed eyeglass makers to experiment with larger size lenses, since CR39 is much lighter in weight. Although Trivex lenses provide an almost endless list of advantages, there are some downsides. First things first, I would like to apologize for my extended absence. It also has good UV protection and a higher refractive index than CR39. 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