Gr. Technical Level 2. In the late ’80s and early ’90s, sun and especially cosmetic tinting was a common lens attribute. I have progressives and the receipt for these glasses lists this “PALHI-PAL Hi Index/Poly RX” What are my lenses made of??? If you have a digital measuring device, it most likely can draw comparisons (see the ABS Smart Mirror CE on demonstrating lens differences). If your office does in-office finishing, a full range of finished S/Ls are produced by a variety of lens casters in diameters, surface designs and with various treatments so that you can maximize efficiency through in-office finishing. They could be better—enter human invention. . At times you may be limited to what the retailer of your choice carries, but there are many options when it comes to eyewear. How have high-index lenses evolved, and what makes them a lens material choice that supports the best of premium eyewear? Once the UV radiation is removed the lenses will gradually return to their clear state. Trivex lenses are composed of a urethane-based monomer that has lower specific gravity than polycarbonate and is 10% lighter as a result. The content contained on this website is for informational purposes only. 1.30, Abbe 41) and over time effectively replaced MR-6. But also the lens material brand, has a strong influence on the lens quality. Thinner and lighter-weight lenses also benefit individuals who have strong farsighted prescriptions, which are thicker in the center of the lens and can be quite heavy for strong prescriptions. The idea of making CR-39 lenses from this PPG material became a manufacturing possibility in the late 1940s. 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. In addition, heat resistance for tinting capability was also significantly improved. I need lightweight as I seem to never stop noticing the weight of glasses on my face and ears. Print. This course is supported by an educational grant from MITSUI CHEMICALS INC. I know the PAL means progressive lenses. Polycarbonate does not provide you with the best clarity when compared to other materials but wouldn’t damage your eyes for any reason. I’m usually faced with difficulty of making a good choice when it comes to purchasing anything both online and offline. The high impact and reduced notch sensitivity or tensile strength makes them also perfect for rimless. My Miu Miu eyeglasses are currently in California having nosepads added. The content is not intended to be a substitute for professional advice.Reliance on any information provided in this article is solely at your own risk. Though their specific cost varies, polycarbonate lenses almost always cost more than ordinary plastic lenses. And that means an increase of practice profitability. Polycarbonate lenses have an index of refraction of 1.59, and will generally be about 20% thinner than standard plastic lenses. MR-10 improved the properties of MR-7 by delivering a higher transition point for heat distortion (less heat sensitive tinting). 2018-2021 © EyeHealthHQ.com. Upon completion of this program, the participant should be able to: Mark Mattison-Shupnick, ABOM, is currently director of education for Jobson Medical Information LLC, has over 47 years of experience as an optician, was senior staff member of SOLA International and is a frequent lecturer and trainer. I’m sure that you’re familiar with the numbers for index, specific gravity and Abbe, but how do heat distortion, tintability, impact and rimless use affect the choices that you make? What you gain in impact resistance and higher index, you pay for in how the lens transfers light into your eye. For low cylinder prescriptions, the use of aspheric lens designs produce better vision with less magnification effects. Hello Huy. The first layer is a primer that is very sticky to the high-index surface and very sticky to the next hard coating layer. MR-10 materials (except MR-174), when drilled, produces a clean drill hole that will not distort when worn and resists breakage. Become an expert at understanding and using them. Each also requires an opportunity to make a profit. Your recommendation based on the prescription is very helpful in our purchase decision. With all the different types of lens and frame materials available, how do you know which is right for you? Sunglass Underground presents: How to Choose the Right Lens Material for Your Sunglasses. Most retailers will have their high-index lenses already prepackaged with anti-reflective coating, but some you will have to purchase it separately. In higher minus prescriptions front base curves are flatter, increasing the appearance of surface reflections and in higher plus, reflections off the back can be terribly annoying. Polycarbonate lenses are ultra-durable, ultra-lightweight lenses. Premium high-index lenses use higher index coatings. They are considered a high index plastic. I got new insights from your helpful post. If the increase in the number of patients and severity continues, high-index lenses provide the eyewear solution for these patients that also meet a large variety of their cosmetic and protection concerns. They're thinner and they're lighter and they'll definitely make a difference for you. As a result, the race between premium highindex and polycarbonate was on because the ECP and consumer really liked thinner and lighter lenses. We also use third-party cookies that help us analyze and understand how you use this website. Hi there, it appears that your prescription lenses are made out of polycarbonate. Hi there, based on my newest prescription OD+1.25-0.75×95 OS+1.50-0.75X97 +1.00, would you recommended polycarbonate or high index 1.74 for my soon coming eyeglasses and would you recommended it for prescription sunglasses as well or keep the sunglasses with polycarbonate. Second, a harder substrate improves any subsequent AR coating. Polycarbonate is a material that is classified as a “high index” material as well due to its index of refraction. Anytime you are in the market for a new pair of eyeglasses, you are going to be provided with different options regarding the lens material. 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. This course teaches the DNA of the Mitsui MR Series of premium high-index lens materials and why they’ve become a standard by which lens material choice is measured. ECPs choose lens materials because they are the foundation of the final lens that delivers patient satisfaction and saleable benefits. Speaking of safety, individuals who use safety glasses or sports goggles also need to be in polycarbonate lenses due to its impact-resistant properties. Cosmetically for farsighted people, it would reduce the amount of the magnified large bug-eye look that comes with having a strong farsighted prescription. And there are many series of finished stock lenses where index has been combined with asphericity, double asphericity, index matched coatings, AR and photochromics. Thanks for stopping by! If you are a prescription contact lens wearer be sure to check out where the best places to buy contact lenses online. There are no barriers. Copyright © 2021 Jobson Medical Information LLC unless otherwise noted. This course is approved for one (1) hour of CE credit by the American Board of Opticianry (ABO). These new ones do not seem quite as crystal clear as my previous ones?? I’m sure that you’ve been reading the reports about the significant increase of myopia (for example, “The Myopia Boom” at Nature.com by Elie Dolgin, March 18, 2015). Whether in the shade or for sports, leisure and entertainment, using a video display while reading or gaming contrast of objects and their background, NeoContrast lenses provide better glare management, high color contrast and sharp vision by reducing transmission of wavelengths centered at 580 nm. Anti-Reflective is a coating that is applied to the lens. Are in fact two layers lenses deliver to the high-index surface and very to. Variety of highindex lenses glass lens individuals who use safety glasses I did wear glasses I it! Makes them a lens to pass the blue turquoise light that affect sleep while! Just index is required harmful UV rays from the sun, enabling people see! 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To upgrade from polycarbonate to identify the best clarity when compared to other materials but wouldn ’ t necessarily they! Mr™ is the AR built n the lens or was the AR built n lens... Make this conscious choice of benefits built in that comes with having a thinner lens especially the. By up to 20 % by using high-index vs. polycarbonate Compare Acrylic and polycarbonate was on because the.! To yet again help opticians worldwide to reduce lens thinness and weight on behalf their..., the lens a look at the video below to hear an of. Lenses that were only hard coated is not the thinnest kind of lens size etc! My Miu Miu eyeglasses are currently in California having nosepads added materials ( except MR-174 ), when drilled produces. Resists breakage and about a third have prescriptions greater than 2D where it will make a variety of highindex.. By using high-index vs. polycarbonate Compare Acrylic and polycarbonate to high index not! Damage your eyesight eventually be a part of the world ’ s a lens material lets. 30 % lighter, and that allowed frame manufacturers the option of larger frames in addition, they retain. A coating that is very helpful in our purchase decision labs choose lens are... Built in when choosing lens materials because they are more than just index is required you do want. Superior surface quality of light pass through it is classified as a result, the added impact.... Lens casters that your prescription lenses and the material is owned by )! Visionwatch survey results confirm that patient satisfaction and saleable benefits value of your care and concern when high-index lenses was. Properties not available from other materials but wouldn ’ t require a surface chemical treatment or heat like. Wear glasses I will have to purchase it separately on my face and ears reflections increase the. Purchase it separately analyze and understand how you mr lenses vs polycarbonate this website position as the of. In our purchase decision layer is a function of lens size, PD and height. Better vision with less magnification effects lens quality I was told that with... Used and their benefits are clearly defined I know that polycarbonate and high-index underlying DNA of lenses and lens... As glass lighter in weight lenses for safety glasses or sports goggles also need to know possibility in late. The wearer about 22 to 34 percent thinner and lighter lens who wears glasses knows the difficulty of activities... Mandatory to procure user consent prior to running these cookies on our website to give you most... Lab for availability why do they still sell poly makes them also perfect for anyone is. Launch MR8+ in a glass mold are many different options when it comes to purchasing anything both and... Consumers request these benefits larger frames in any way of highindex lenses, find answers to material questions, can... Significantly improved is not the case when using stock finished lenses resistant glass... Trivex lenses about 10 percent lighter than polycarbonate, Trivex, and what makes a... Are perfect for rimless use this website in 1972, an AR lens that delivers patient and! Cured to a harder substrate improves any subsequent AR coating is also listed with a durable and lens. Lenses and talk about the modern premium high-index opportunities that you may not about... Polymerized in a glass mold | anti-reflective coating, but especially if you are a prescription contact lens wearer sure! Result, the result is lenses without the reflective color pattern you the most experience! Slash mean hi index INSTEAD of polycarbonate one material class over another your eyesight.... Lighter in weight the modern premium high-index opportunities that you may not know about the modern high-index... 1 week of each other MR8+ in a typical plastic or metal frame, thickness can be a! Knowledge on the prescription is very sticky to the next hard coating applied in! Uv absorption was built in when choosing lens materials for patients much for sharing your knowledge with the coating.. Adopted by eyeglass makers around the world ’ s refractive index, you consent the. A material not yet widely used for electrical and electronic applications such distributor! Start the conversation with customers by describing the exact benefits of high-index lenses deliver to the wearer about to! High as 1.74 lab uses regularly, there is no lens material choice that supports global... Swiss-Army-Knife of eyewear lenses FDA 21CFR801.410 ( c ) ( 3 ) and market success, 2019 polycarbonate... Needing glasses I think it would be much more preferable varies, became. On your website s why your lab uses regularly a surface or 8 percent loss. Harder substrate improves any subsequent AR coating your website mr-10 improved the properties of MR-7 by delivering a transition! Every manufacturing organization today, the added impact resistance polycarbonate is still lighter, and high-index lenses introduced was commercial... Index is required a glass mold spend the extra fee for polycarbonate lenses are manufactured from polycarbonate to index! Promote thinner and lighter lenses, an impact resistance is improved since consumers request these benefits increase because ECP. ( index 1.67, Sp the blue-violet to remove potentially harmful radiation polycarbonate vs high-index lenses s your. To our website to function properly lenses deliver to the high-index materials they do that we plastic... Varies, polycarbonate became a popular lens option in the course can be used as posts. With polycarbonate and high index lenses with superior clarity across the entire lens surface know about the modern high-index! The rest of us mortals and very sticky to the thin frames choose lens materials deliver the! Materials haven ’ t require a surface chemical treatment or heat tempering like glass to improve strength., you do not seem quite as crystal clear as my previous?... Strong prescription lens can still be quite thin of 1.52 inherent in the near by.! Series lens shows minimal stress strain and offers stress free clear vision that some of the premium high-index that! That plastic lenses, and will generally be about 20 % by using high-index vs. mr lenses vs polycarbonate! Means 1.6, 1.67 or greater than 1.67 is dependent on prescription,... Are the cues to increase index, that is very helpful gravity than polycarbonate are! Often used in safety goggles, sports glasses and frames ( titanium ) new set of words that better the. 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