All About Vision and AllAboutVision.com are registered trademarks of AAV Media, LLC. Your optician 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. Most other plastic lenses are made from a cast molding process, where a liquid plastic material is baked for long periods in lens forms, solidifying the liquid plastic to create a lens. Polycarbonate is a strong materials that used in many applications. I absolutely love this pair of sunglasses, and I believe it's one of the … Further, plastic glasses scratch less frequently. Your baby: Infant vision development timeline. The light reflected is horizontally polarized. 49. High index advantages are included with every polycarbonate lens so there is never any extra charge for high index when polycarbonate lenses are ordered. Lets talk about the 2 most popular options. The polycarbonate lens is an upgraded option. Polycarbonate plastic is strong and works well for high-contact activity. Choose from contactless Same Day Delivery, Drive Up and more. Polycarbonate Sunglasses Lenses Polycarbonate plastic lenses are the best bet for individuals who will be movin’ and shakin’ in their sunglasses. 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. Maui Jim Makaha (My Favorite!) There are times you don't want to use them though. This means that AMO sports sunglassses lenses have outstanding clarity and less distortion and have very high impact resistance protection. The Development: Polycarbonate was initially designed for covering cockpits in fighter planes, because it offered an impact-resistant, clear window. Polycarbonate lenses are tough, shatter-resistant, lightweight and ideal for everyday use. Eye refraction and function: How does the eye work? The Applicability of Polycarbonate Glasses. So, polycarbonate is the idea for making protective glasses. Contrast sensitivity testing: What is it? 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. The Types: Polycarbonate single vision lenses are of three different types: Clear Polycarbonate, Transitions and Polarized sunglasses. 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 a lens manufacturing process called injection molding, the pellets are heated until they melt. These factors along with polycarbonate’s inherent UV protection and pricing make it a popular material. Many Oakley sunglasses use the stress-resistant frame of nylon-infused plastic that the company dubs O-Matter. The flexibility enhances impact resistance and helps to make these glasses more comfortable to … Polycarbonate and Trivex lenses both will provide clearer, more comfortable vision if anti-reflective (AR) coating is applied to the lenses. These are clear at night or when indoors, and darken when exposed to UV rays. When eye safety is a concern, polycarbonate or Trivex lenses usually are the best choice for your glasses, sunglasses, and sports eyewear. Polycarbonate lenses are tough, shatter-resistant, lightweight and ideal for everyday use. A lot of patients that go to our website, they see that we offer Plastic Lenses, Polycarbonate Lenses and Hi-Index Lenses. Dior SoLight Sunglasses: Proof That Oversized Sunnies are Here for Good, Two Must-Have DITA Styles: Braindancer and Symeta Type-403, Oliver Peoples x Cary Grant: A Classic Hollywood Collection. Ideally, you want sunglasses that offer UV400, which means they block 100% of UV rays. Contacts for teens: What age can you wear contacts? Bisphenol-A (BpA) is a starting material in the manufacture of polycarbonate, so there are trace amounts of BpA found in those lenses. © 2015 - Shadesdaddy.com. If someone is sensitive to pressure or wants to wear their sunglasses for a prolonged period of time, polycarbonate lenses are recommended. This means that it bends light to a far greater degree than glass or other plastics of equal thickness. Polycarbonate glasses create more distortion than plastic lenses and often cause problems for those prone to distorted vision. 5.0 out of 5 stars 2. This is unlike CR-39, which does not fare so well with higher prescriptions. 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? The latest hot topics from LifeScript.com. When eye safety is a concern, polycarbonate or Trivex lenses usually are the best choice for your glasses, sunglasses, and sports eyewear. Today, polycarbonate lenses have set a completely high standard in eyewear safety. Sunlight can be absorbed or reflected in several different directions. Polycarbonate lenses are less likely to fracture and are an ideal choice for people who wear rimless eyeglass frames. Polycarbonate lenses are made from a similar material to that of aircraft windshields and are virtually indestructible. While protective glasses are require impact-resistant, UV protection so as to shield eyes in a certain conditions. FREE Shipping on orders over $25 shipped by Amazon. Like polycarbonate lenses, lenses made of Trivex are thin, lightweight and much more impact-resistant than regular plastic or glass lenses. They darken significantly within about a minute of exposure to bright light, and take somewhat longer to clear. Mosley Tribes Free City Photochromic Sunglasses. Polycarbonate was the first plastic high index lens and still has one of the highest index ratings (1.59). Sundog Eyewear Women's Fairway Polycarbonate Lens Sunglasses, Black. Shop for black frame polycarbonate sunglasses online at Target. Well, plastic lenses are our basic lens. Darker colors provide higher levels of polarization. $40.49 $ 40. Polycarbonate and Trivex lenses both block 100 percent of the sun's UV rays without the need for special UV-blocking lens coatings. It’s a great option when deciding on new frames for children to increase the longevity of their frames. Polycarbonate and Trivex lenses have comparable impact resistance. While they’re not the thinnest kind of lens out there, they still retain their position as the swiss-army-knife of eyewear lenses. Trivex lenses were introduced in 2001 by PPG Industries. This enabled pilots a full-field of vision and ensured safety. Find an eyecare professional and book online in minutes! Photochromic lenses are available in both materials. But polycarbonate is a thermoplastic that starts as a solid material in the form of small pellets. Trivex lenses have less internal stress and may produce sharper central vision than polycarbonate lenses. Expert Insight With no federal guidelines for UV protection in sunglasses as of 2009, the AOA notes that lens color and darkness has nothing to … And it is also applied in the medical industry. Similar to polycarbonate, Trivex lenses are thin, lightweight, impact-resistant, and provide 100% UV protection. This gives Trivex lenses the advantage of crisper optics than injection-moulded polycarbonate lenses, according to PPG. Polycarbonate lenses were the first plastic high index lenses. They are more impact resistant than plastic. Tinted lens sunglasses: Which colour is right? Polycarbonate lenses are available in a wider variety of lens designs (e.g., progressive lenses and other multifocals) than Trivex lenses. This combination of lightweight comfort, UV protection and impact resistance also makes these lenses an excellent choice for children's glasses and safety glasses. Polarized lenses are an option for sunglasses that can make it easier for you to see in bright light. The winner of … Since the refractive index is only 1.49, these types of lenses get very thick, if you need a strong correction. Plastic responds to tints, the darkness that turns glasses into sunglasses, while polycarbonate does not. Photochromic lenses may be made of glass, polycarbonate, or another plastic. Impact-resistant lenses reduce the number of eye injuries from eyeglasses and sunglasses. Consequently, polycarbonate is the material of choice for safety and children’s eyewear. Despite its many advantages, polycarbonate isn't the only lens material suitable for safety applications and children's eyewear. This reflection produces an agitating source of glare that ca… Besides, the material can also prevent UV rays. These lenses are a desirable choice for sports personalities, people who work in dangerous job environments, and especially for children. Polycarbonate is still lighter, and can be made in higher index – meaning that a strong prescription lens can still be quite thin. Polycarbonate lenses are ultra-durable, ultra-lightweight lenses. With an index of 1.59, polycarbonate also produces thinner, lighter lenses than glass or plastic. Brown eye colour facts: What causes eyes to be brown? What are the Lady Gaga Sunglasses in the Movie ‘A Star is Born’. http://www.framesdirect.com/landing/a/lens-materials.html Polycarbonate is the most commonly used material for eyeglasses. When eye safety is a concern, polycarbonate or Trivex lenses usually are the best choice for your eyeglasses, sunglasses and sports eyewear.. All Rights Reserved. According to the AAO, polycarbonate lenses and other high-index plastics, like Trivex, offer 100% UV protection. Sunlight that is bouncing off horizontal surfaces such as water, land, or the hood of a car is usually reflected back in a similar horizontal direction. On polarized sunglasses, the filter creates vertical openings for light. The Vision Council described polycarbonate lenses as “virtually unbreakable.” A study published in the Journal of the American Medical Association also found that polycarbonate lenses were more impact-resistant than glass or other types of plastic lenses. They filter 100% of UV rays during daylight and in fluorescent light. Plastic Lenses (CR-39) Plastic lenses or also known as CR-39 is the most common optical lens material you will find. It's lightweight, durable and can withstand heat and cold without becoming brittle. Blue eyes: The origin and genetics of blue eyes, How to clean and remove scratches in glasses, Eye and vision problems in preschool children. High index lenses are thinner than normal lenses and bend light in a slightly different way. This combination of lightweight comfort, impact resistance and UV protection makes it an easy choice for Children’s eyewear. Become uncomfortable to wear for long periods of time, polycarbonate lenses on shadesdaddy.com as is... Lenses the advantage of crisper optics than injection-moulded polycarbonate lenses are of three different types: polycarbonate... Somewhat longer to clear has good UV protection because of its excellent transparency, durability, and for. 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