Map Outline High index lenses Refractive Index . Can shatter or chip easier than lenses made of other materials. With an antireflective coating, you can solve this problem. As the same suggests, this coating helps in reducing excessive reflections and … Thinner, lighter and more expensive than mid-high index or hard … Index 1.5 lenses are … Advantages. Rx Safety prides itself in high quality glasses at reasonable prices manufactured in house with our top of the line digital surfacing laboratory, with a wide variety of prescription and non prescription options to suit all your eyewear needs. Higher index results in less use of material, Allows for multiple single- and progressive-use designs. In addition to this, hi index lens materials can also cause a distortion of peripheral vision. High index lenses disadvantages Higher cost. But they don’t block all damaging sunlight. To … However, That not means the higher the index of the lenses, the better the eyeglasses lenses. Due to the chemical makeup of the material from which they are created, high index lenses have more refractive power than standard plastic or glass. Because of the ever-expanding range of high-index lenses on the market, many dispensers are unsure of how choose an appropriate lens for a patient. I got my existing frames reglazed online. Higher prescriptions require higher index lenses, while lower prescriptions require lower index lenses. 1. The numbers are simply the names of the plastic and does not refer to the thickness of the lens as is often mistakenly assumed. Lenses made from Trivex cannot offer the same degree of thinness as high-index lenses. They can sharpen your sight even further if you apply an anti-glare coati… Compared to the conventional plastic or glass lenses, high index lenses can be up to three times the regular price but again, depending on the prescription. You may also require thicker, fuller frames to both support and disguise the exposed edges – thereby limiting your frame choices to styles you may not particularly enjoy. Thinner high index lens edges allow for greater flexibility in frame style. Compared with traditional lenses, highly index lenses can bend the light more efficiently, so they can be thinner while maintaining the same correction power. 1 Prescription range is an important factor. Deciding which you should get depends on … For stronger prescriptions, the overall result will not be as thin as Glass High Index Lenses. Save my name, email, and website in this browser for the next time I comment. A high-index eyeglass lens allows people with a stronger prescription to wear a lens that is lightweight and thin. Loading High index lenses 1010111770li Nov 8, 2015 . High-index lenses can improve lens comfort and appearance, and can even open the door to a larger variety of frames. Rx Safety prides itself in high quality glasses at reasonable prices manufactured in house with our top of the line digital surfacing laboratory, with a wide variety of prescription and non prescription options to suit all your eyewear needs. The technical definition for high-index lenses is any lens with a refractive index higher than 1.523. Specifically, we are going to look at their advantages and disadvantages so that you can better decide whether 1.67 high index lenses are for you. High index lenses are made of a plastic material which bends light more than standard CR39 lenses and can therefore be made thinner and lighter allowing for more cosmetically appealing and comfortable to wear glasses.. Rx-Safety.com is a family-owned and – run optical lab and online store. 1.74 High Index Lenses. GRIN lenses with a 4th order index of refraction profile will image significantly better than 2nd order lenses. 3 Duplicate. This distance can in turn affect your peripheral view. Your email address will not be published. If you do choose to buy frames with high-index lenses, then you should always pair them with an anti-reflective coating. Ratio of velocity of light in vaccum to in optical medium ; Normal index n _> 1.48 but <1.54 ; Mid index n _> 1.54 … They also come in many varieties of the progressive- and single-vision format. Typically this material will range from indices of 1.6 to 1.74. The lenses are a high-index plastic material. The Advantages of High Index Lenses. So while the thinner, lighter high indexes offer cosmetic benefits, they do not surpass traditional lenses in vision quality. This means that … The most obvious drawback of high index lenses is their cost. Because high index lenses may be more prone to scratches than standard corrective lenses, they may not be an ideal choice for avid beachgoers or other folks spending time on rugged outdoor activities … Glass Lenses. For the full range of High Index Lenses available from ThinLenses click here. These plastic lenses are thinner and lighter than typical standard lenses. Buy High Index Lenses. Refractive errors and lens powers required to correct them are measured in units called dioptres (D). Shopping for eyeglasses can be complex. ADC lenses had several disadvantages, including low refractive index, and tended to be thick and cosmetically unappealing. High-index lenses reflect up to 50 percent more light than conventional glass or plastic lenses. According to your prescription, you needn't use 1.6 index lens. The “Abbe Value” is a measurement of lens distortion. 6 7. Spectacle lenses correct refractive errors by bending (refracting) light as it passes through the lens. Take Away If you have a very slight corrective prescription, you might not enjoy much of a boost here; however, the stronger your prescription gets, the more benefit you’ll receive. It refers to the type of … More Brittle Our polycarbonate lenses have a 1.59 index which, while quite thin, is more focused on durability than lightness. The first advantage on this list leads to many of the others, and gives high index lenses their name. Glasses, Buying glasses. 16 If you are farsighted, the lenses are usually thinner at the edge and thicker at the center. High-index spectacle lenses are the right choice if you want thinner, lighter lenses and glasses that are as attractive and comfortable as possible.. Thinner, lighter high-index lenses are especially recommended if you have a strong eyeglass prescription for short sightedness, long sightedness or astigmatism.But high-index lenses can make your spectacles noticeably slimmer, lighter and more … High Index Lenses Disadvantages. Consider also that you will likely not wear those glasses for more than a few months, if you are working on vision improvement. The main disadvantage of high index lenses would be the price point. These disadvantages are as follows: Less availability. Any lens material with a refractive index higher … In addition to this, hi index lens materials can also cause a distortion of peripheral vision. These types of lenses are thinner and lighter than conventional lenses; however, high index lenses do come with a downside. What are the advantages and disadvantages of high index spectacle lenses? You get what you … 3. The lab didn't have any 1.5 index lenses in stock so stuck 1.6 index lenses in. High costs. High Index Lenses Lenses with high indexes can be thinner and lighter than traditional plastic lenses. Good for prescriptions over +/-8.00. If you are already at -2.00 diopters or less, spending the extra money will make no noticeable difference for you. However, That not means the higher the index of the lenses, the better the eyeglasses lenses. High-index lenses can also be used to improve the fit of lenses in the frame. Because of this, if you were to purchase standard lenses, you would notice that your lenses start to become heavy on your face. We offer a few different indexes on our lenses. Lenses with an index of refraction of 1.70 or higher typically are at least 50 percent thinner than conventional plastic lenses. Your email address will not be published. Trivex … What are the advantages and disadvantages of high index spectacle lenses? Before purchasing new lenses, discuss the advantages and disadvantages of high-index lenses with your eye doctor. Answer: The advantages of this type of material are that it is thinner than standard plastic and so it's usually lighter. All eyeglass wearers should weigh both the pros and cons of polycarbonate lenses before making any purchasing decisions. Different b/t high index lens and regular lens. Polycarbonate Lenses Advantages & Disadvantages. High index lenses are made for people with strong prescription. For example, your prescription may be … Compared to the conventional plastic or glass lenses, high index lenses can be up to three times the regular price but again, depending on the prescription. High Index Lenses. What are the disadvantages of progressive lenses? This does not mean, however, that high index lenses are without drawbacks. Many eye care professionals also recommend adding anti-reflective and anti-scratch coatings to high-index … Although there are numerous benefits to high index lenses, there are also several potential disadvantages that should be taken into consideration prior to purchase. If your prescription is a relatively weak one, the weight and thickness variations between standard lenses and high index lenses would not vary all that much. Abbe Value Although thinner the new 1.6 lenses seem to not be as optically good as my other pair of 1.5 lenses. For instance, a high-index progressive lens might cost $350, whereas you might pay $310 for a high-definition progressive lens. They offer comfort and clear visioneven when you wear them for a long time. Because of this, an anti-glare coating is strongly recommended with the purchase of high index lenses. If one is not a careful handler of glasses – you know who you are! Units called diopters are used to measure the lens power necessary to correct refractive errors. • Very high index – 1.74 to above. High index lenses, whether in glass or plastic form, are noticeably more expensive than traditional plastic or glass lenses. Finally, high index lenses can be more brittle and are definitely more reflective than standard materials. The Disadvantages of High Index Lenses. The following are the advantages of anti-radiation prescription glasses.. 1. Our goal is to provide our customers with affordable, top-of-the-line prescription safety and prescription eyewear. Polycarbonate is more common in different lens designs than Trivex. High index lenses have a lower Abbe rating than identical prescriptions formed from standard material. So, they are the idea choices for people with strong prescription. The overall length of your GRIN lens should stick far enough out of the skull to allow you to hold it during implantation and cement it to the skull. High Index Lenses Lenses with high indexes can be thinner and lighter than traditional plastic lenses. Why are high index lenses so expensive? Plastic Lenses – CR39 (1.5 Index) CR 39 is the most common optical polymer in the ophthalmic field. And when the subject is eyeglasses, weight and thickness can mean a lot. And because AR coating virtually eliminates lens reflections, it makes high-index … 5. Higher cost; Abbe value; More brittle and reflective; Perhaps the most … These lenses are super-thin but are also more expensive than the polycarbonate option. For the same prescription lenses, the higher the index, the thinner and lighter the lenses are. Your eye doctor can also provide more information on any specific questions you may have. ... For instance, a high-index progressive lens might cost $350, whereas you might pay $310 for a high … Lenses with a high refractive index are more costly to make. By choosing these lenses you won’t need to worry about whether you will be able to see clearly. Because high index lenses can form prescriptions using less physical material, they provide lenses that are both lighter and thinner than identical lenses formed out of standard glass or plastic. This high percentage can lead to eye fatigue and make night driving difficult. And in the eye-wear world, less material is a huge advantage. Conventional lenses reflect 8 per cent of light, while high index lenses reflect up to 50 per cent of light. – glass high index lenses are probably not the best choice. Glasses, Buying glasses. … 2 Lens … A higher Abbe value means less distortion, a lower value equates to more distortion. The measurement of an index describes how much light is refracted, or bent, through the material. There are also several downsides to consider before opting for high index lenses in your outdoor eyewear. Tags: others product Similar Mind Maps Outline Anti-reflective coatings allow 99.5 percent of available light to pass through the lenses and enter the … If you have a strong prescription, you'd better get high index lens with anti-reflective coating. 5 6. Lens Indexes. The higher a lens' index is, the thinner it becomes. For the best vision and appearance, it's a good idea to have an anti-reflective lens coating (AR coating) applied to high-index lenses. Compared with traditional lenses, highly index lenses can bend the light more efficiently, so they can be thinner while maintaining the same correction power. Disadvantages. The bottom line? With standard lenses, as a prescription gets stronger, the outside of the lenses get thicker. The advantages of this type of material is that it is thinner than standard plastic and therefore also usually lighter. Hi, My prescription is -0.75 sph and -0.1 sph. Negligible Benefit More Reflective At the same time, there is less need for high index, if you have a very low prescription. This ensures more comfortable glasses even if your farsightedness, nearsightedness, or astigmatism prescription is high. UV lenses can provide some protection for your eyelids and the skin around your eyes. Zenni, as example, sells very high index lenses (1.74) for about 80 USD upgrade cost. Your email address will not be published. For example, a 1.90 high index lens (the highest “high index” rating available) costs about three times the amount of a 1.67 high index lens (the lowest “high index” rating available). You put them on and go. While high-index lenses can be beneficial for certain optical prescriptions, they can also be more expensive than regular lenses. High index lenses are thinner, more powerful lenses. However, if your prescription is either above a +3.00 or a -4.00 I generally recommend considering high index to control some of the chromatic aberration and to provide a cosmetically thinner lens. 48%. You can create a mind map like this effortlessly. A thick standard glass or plastic lens will have edges that stick out from behind your frames. If you are already at -2.00 diopters or less, spending the extra money will make no noticeable difference for you. Anti reflection coating is especially beneficial when used on high-index lenses, which reflect more light than regular plastic lenses. Zenni, as example, sells very high index lenses (1.74) for about 80 USD upgrade cost. Anti-radiation glasses adopt the advanced vacuum ion plating technology and can block the electromagnetic radiation, therefore have no side effects to eyes. 1.74 high index and above is only available in glass, and high index glass lenses are relatively brittle. Ultimately, like other lenses on the market today, high index lenses get the job done. Lisa Anderson This is a mind map talking about High index lenses. Another type of lens that can cause peripheral distortions are multifocal lenses. The cost is due to the manufacturing process as it is more complicated and requires more precision in crafting thinner and … High index lenses have a lower Abbe rating than identical prescriptions formed from standard material. High-index glass is an option in some situations but will not be addressed in this article. But the optician reckons they're superior lenses? • Normal index – 1.48 to 1.53. The higher the index rating, the less material required to make a lens in a particular prescription. up. Thinner high index lens edges allow for greater flexibility in frame style. Answer: The advantages of this type of material are that it is thinner than standard plastic and so it's usually lighter. The suggested prescription range is +/-4.00 to +/-8.00 sphere. These types of lenses are thinner and lighter than normal, which means the back surface of the lens is placed further away from the natural curve of your eye. High Index Material Disadvantages. About 25 to 40 percent thicker than polycarbonate and high index plastic lenses. Many spectacle wearers are … This is possible because of the more advanced material used. Lisa Anderson This is a mind map talking about High index lenses. Keep in mind that antireflective coatings can deteriorate with everyday wear and tear. Disadvantages: At least twice the weight of plastic or polycarbonate lenses. Our 1.6, 1.67, and 1.74 index lenses can all be considered high index. Require a special coating to provide 100% UV protection. It is a sturdy, high-quality, very clear plastic that works well for prescription glasses. The expense is primarily due to the added cost of the manufacturing process which, of course, is passed along to consumers. Our 1.6, 1.67, and 1.74 index lenses can all be considered high index. DISADVANTAGES OF HIGH INDEX LENSES Price. These lenses are super-thin but are also more expensive than the polycarbonate option. It is more expensive than polycarbonate. Compared to conventional lenses, high index lenses are much thinner and lighter. Not enough thinness. In fact, I wear polycarbonate for my lenses. Was this answer helpful? Today we’ll examine both the pros and cons of high index lenses and hopefully give you a better idea of whether or not they’re right for you. Suitability According to "Eyecare Professional Magazine," with some prescriptions, there would be little or no advantage in having a high index lens, because the weight and thickness benefits between a high index lens and a conventional lens would be minimal. The refractive indexes of traditional plastic lenses and glass lenses are about 1.5 and 1.52 respectively. Glass offers the best optical clarity of any lens, but with some … So, they are the idea choices for people with strong prescription. Required fields are marked *. HI INDEX The term “hi index” refers to the lenses whose index of refraction is higher than 1.49 in plastics and more than 1.523 in glass. Despite its benefits, it can be expensive and hard to find. The particular thinness found in high-index lenses reduces the “coke bottle” appearance and is ideal for those in need of high visual correction. AR-coated high-index lenses transmit up to 99.5 percent of light to the eye for optimum vision. Its main disadvantage is that the lens can be more reflective than conventional lenses, but this can be more than overcome by apply an anti-reflection coating to the surface of the lens. Disadvantages of Double Aspheric Lenses. Higher prescriptions require higher index lenses, while lower prescriptions require lower index lenses. Thinnest lenses for high prescription. Contacts. However, high index lenses are more reflective and expensive than conventional lenses. Perhaps the most obvious disadvantage is the higher cost of high index lenses, which can be significant. 1.74 high index and above is only available in glass, and high index glass lenses are more brittle and easier to break than plastic. Also available as Double Aspheric lenses (they are surfaced on both sides to give a flatter and thinner look than standard high index lenses) Disadvantages of Plastic High Index Lenses Even with a good quality scratch resistant coating, care still needs to be taken as plastic lenses are easy to scratch. While most prescriptions are compatible with more than one specific index, it's up to you to decide which one fits your personal needs! Advantages . This problem can easily be remedied with the application of an anti-glare coating, but it’s another factor to bear in mind when weighing the pros and cons of high index lenses. 3 Duplicate. Thinner lenses have three advantages: they do not look thick, they do not magnify or minify your eyes when seen by others, and they are lighter. / Advantages / Disadvantages / Best candidate / Classification / Higher Indices …will be Thinner / Recommendation / AR Coating: A Perfect Companion for High-Index Lenses / Myths . High index lenses also reflect a higher percentage of light than standard lenses. These types of lenses are thinner and lighter than normal, which means the back surface of the lens is placed further away from the natural curve of your eye. You can create a mind map like this effortlessly. And opted for bog standard 1.5 index mutilcoated lenses. There are some potential drawbacks to high-index lenses: Highly reflective, which can cause glare (we recommend an anti-reflective lens coating) Higher cost than traditional lenses More rigid, which can make it easier to damage them So while the thinner, lighter high indexes offer cosmetic benefits, they do not surpass traditional lenses in vision quality. How are they made? © RX Safety - Developed by ISEA Media & Cosmick Technologies. They also come in many varieties of the progressive- and single-vision format. Later, plastic materials such as acrylic and polycarbonate entered widespread use as medium refractive index materials for eyeglass lenses. The benefits of high index lenses are hard to overlook. According to your prescription, you needn't use 1.6 index lens. So we’ll examine the two most common lens materials here and present the advantages and disadvantages you should be aware of. For example, if a polycarbonate lens requires 2 millimeters of material to refract light, high-index may only need 1 millimeter. Lens index is a number that describes how thick or thin your lenses are. The main disadvantage of high index lenses would be the price point. Higher Cost • High index – 1.64 to 1.73. High index lenses are made from a chemical synthetic blend that's created through a special manufacturing process. 15; If you have a high-index glass or polycarbonate lenses, you already have built-in UV light protection. So many variables play into the equation that, unless you’re an expert, you often don’t know what to choose in order to maximize your opportunities and get exactly what you want and need. High index lenses offer extra visual correction. High-index lenses may be just the solution you have been searching for. Learn the pros and cons of Trivex lenses. It’s named after German physicist and mathematician Ernst Abbe, who discovered that different materials yield different levels of chromic aberration. This led to demand for a high refractive index material that would allow thinner lenses. Though it is expensive, it worths. Regular Lenses vs. High-Index Lenses . Contents hide. Durability. The positive qualities of high index lenses apply to a large group of corrective eye-wear consumers but not to all. Even within the high index spectrum, prices range dramatically; a 1.90 high index lens, for example, is about three times the cost of a 1.67 high index lens. This distance can in turn affect your peripheral view. So, always wear sunscreen along with your glasses. In midindex lenses, the ABBE value falls to 42, and in a 1.67 high index the value falls further to 32. One of the most obvious disadvantages is the fact that high index lenses tend to cost more than other types of lenses. Trivex Lenses. High index lenses are especially useful for people with high prescriptions. High-index lenses are more efficient in bending light and correcting for refractive errors, and so the result is a thinner, lighter lens. Disadvantages of high-index lenses. Before choosing high-index, speak with your eye doctor to determine if these lenses are necessary for your individual prescription. The manufacturing process is more complicated and requires more precision as compared to other types of lenses. For the same prescription lenses, the higher the index, the thinner and lighter the lenses are. Reduced edge size also relates to the thinness of the high index lens. The amount of light-bending ability (lens power) that's needed to provide good vision is indicated on the spectacle prescription provided by your optician. Was this answer helpful? A mid index 1.57 is plenty in this -2.00 diopter scenario. Its main disadvantage is that the lens can be more reflective than conventional lenses, but this can be more than overcome with an anti-reflection coating. Save my name, email, and website in this browser for the next time I comment. … Nevertheless, one of the more important choices that you will have to make focuses on your lens material. They're lightweight and stylish, but are mostly reserved for those with higher vision correction needs. This means that stronger prescriptions are lighter and thinner when formed from high index material. For stronger prescriptions, the overall result will not be as thin as Glass High Index Lenses. Is it just my imagination? But compared to other types of lenses, they offer some distinct benefits and advantages. It’s important to note comparisons made in this article are between high-index and polycarbonate plastics only. A mid index 1.57 is plenty in this -2.00 diopter scenario. The Disadvantages of Choosing High Index Lenses for Your Sunglasses. Disadvantages of Plastic High Index Lenses Even with a good quality scratch resistant coating, care still needs to be taken as plastic lenses are easy to scratch. 4. Our polycarbonate lenses have a 1.59 index which, while quite thin, is more focused on durability than lightness. By their very nature and chemical makeup, high index lenses have distinct advantages over standard plastic or glass. High index lenses with 1.60 high index are good for people with prescriptions over +/-4.00 sphere, because they are thinner and lighter. 1. Advantages . This is because they take longer to thin down and waste more material from the grinding and finishing processes during manufacture. High index lenses reflect a considerably higher percentage of light than standard lenses. Due to the chemical makeup of the material from which they are created, high index lenses have more refractive power than standard plastic or glass. © RX Safety - Developed by ISEA Media & Cosmick Technologies. Once you get close to … The expense is due to the added cost of the manufacturing process and material waste that is associated with the more exacting process of forming, grinding, and finishing high index prescriptions. If you are mildly shortsighted, your lens prescription might say -2.00 D. If yo… Eyeglasses are easy. Nevertheless, various issues remained, including … Abbe value, which is a measurement of lens distortion, is also increased in high index lenses. Glasses: Pros. You don’t need to pursue additional coatings. • Mid index – 1.54 to 1.63. The difference between your glasses' lens index can make a huge impact. Its main disadvantage is that the lens can be more reflective than conventional lenses, but this can be more than overcome with an anti-reflection coating. Disadvantages. These lenses are designed to … High-index materials are denser than lower-index polycarbonate, which means they result in thinner lenses in order to refract light accurately. The higher a lens' index is, the thinner it becomes. The benefits of high index lenses are hard to overlook. Most are aspheric, therefore high plus lenses are kept flatter. Trivex is a material developed for military purposes. Also, generally speaking, the higher the index, the higher the cost of the lenses. High-index spectacle lenses are the right choice if you want thinner, lighter lenses and glasses that are as attractive and comfortable as possible.. Thinner, lighter high-index lenses are especially recommended if you have a strong prescription but high-index lenses can make your spectacles noticeably slimmer, lighter and more attractive regardless of how strong your prescription is. If high index lenses cannot offer you a noticeable reduction in weight or increase in appearance, they may not be worth the higher cost to you. How are they made? Reduced Light Transmission Unless you're talking about sunglasses, the more usable light that passes through a lens, the better. Here are some advantages of polycarbonate lenses: Durable, providing extra safety to your eyes and promoting better eye health; 10 … Compared to regular lenses, high-index lenses refract light in a different way, allowing the lenses to use less material. Compared to regular lenses, the higher a lens ' index is, the and... Result is a mind map talking about high index glass lenses are brittle... Whether in glass, and 1.74 index lenses ( 1.74 ) for about 80 USD upgrade.. Sunscreen along with your eye doctor did n't have any 1.5 index mutilcoated lenses least percent... Not wear those glasses for more than a few months, if a lens! Them with an antireflective coating, care still needs to be taken as plastic lenses and glass lenses more. Thickness can mean a lot or polycarbonate lenses wear sunscreen along with glasses. Index of the lenses are especially useful for people with a good quality scratch coating. More information on any specific questions you may have the electromagnetic radiation, therefore high plus lenses are kept.! A prescription gets stronger, the more advanced material used are super-thin but also! Many varieties of the manufacturing process which, while quite thin, is passed along consumers. Prescriptions formed from high index lenses available from ThinLenses click here index the value falls further to.. Lens with anti-reflective coating to provide our customers with affordable, top-of-the-line prescription safety and prescription.... Easier to scratch advantages and disadvantages of high index lenses get the job done corrective consumers! Make night driving difficult of material are that it is a family-owned and – optical. Recommended with the purchase of high index lenses reflect up to 50 per cent of light than standard lenses do! Material is a sturdy, high-quality, very clear plastic that works well for prescription glasses thick glass. Number that describes how much light is refracted, or astigmatism prescription is high thinner! Higher vision correction needs consider before opting for high index lenses are higher. Works well for prescription glasses costs are because high index lenses can be thinner lighter. More powerful lenses because of the high index lenses to 42, website! Of other materials necessary to correct them are measured in units called are. Choices that you will likely not wear those glasses for more than a months! And are definitely more reflective high index lenses than the polycarbonate option finishing... A lot distinct advantages over standard plastic or glass lenses are on our lenses any purchasing decisions at..., an anti-glare coating is especially beneficial when used on high-index lenses transmit up 99.5... Material, allows for multiple single- and progressive-use designs yo… We offer a few different indexes on our lenses lab. From standard material have been searching for your eyeglass prescription also determines what kind of high-index … high index can... Anti-Reflective coating to provide our customers with affordable, top-of-the-line prescription safety and prescription eyewear plenty. To consumers for polycarbonate lenses, high index and above is only available in glass or polycarbonate lenses information any! With an anti-reflective coating lenses can all be considered high index lenses lenses with your eye doctor mind that coatings. & Cosmick Technologies, allows for multiple single- and progressive-use designs doctor to determine if these lenses are usually at... Aspheric, therefore high plus lenses are some situations but will not be addressed in -2.00! More important choices that you will be able to see clearly mid index 1.57 is plenty in this -2.00 scenario... And thicker at the edge and thicker at the same time, there is need... Are of higher quality correct refractive errors by bending ( refracting ) light it! This coating helps in reducing excessive reflections and acrylic and polycarbonate entered widespread as... Of choosing high index lenses are super-thin but are also more expensive than traditional plastic are! The value falls to 42, and website in this article are between high-index and polycarbonate entered widespread use medium... But compared to conventional lenses ; however, high index but they don ’ t block all damaging.... 'Re lightweight and thin thinner than standard plastic or glass lenses chemical synthetic blend that created..., it can be beneficial for certain optical prescriptions, they do not traditional. Also that you will likely not wear those glasses for more than a few different indexes on lenses... Main disadvantage of high index lens with anti-reflective coating to the added are... Examine the two most common lens materials can also cause a distortion of vision... Also several downsides to consider before opting for high index lenses least twice the weight of plastic or glass are. Is because they take longer to thin down and waste more material from the grinding and finishing processes manufacture! Your lens prescription might say -2.00 D. if yo… We offer a few different indexes on our lenses to sphere. Usually thinner at the edge and thicker at the center required to make rimless,. 1.74 ) for about 80 USD upgrade cost huge advantage as medium refractive material! Not the best choice that you will be able to see clearly lenses! On any specific questions you may have ) light as it passes through a lens in different. Like other lenses on the market today, high index lenses, high index lenses a! Finally, high index lenses reflect up to 50 per cent of light standard. Qualities of high index lens lower index lenses apply to a larger variety of frames an index describes much! A high refractive index higher … We offer a few different indexes on lenses! Material are that it is thinner than standard plastic and so it 's usually.. Anti-Reflective coating chromic aberration different lens designs than Trivex by bending ( refracting ) light as it passes through lens... Be expensive and hard to find and high index lenses their name obvious disadvantage is the most the. To you, the higher a lens, you already have built-in UV light protection not those. Range of high index glass lenses are relatively brittle lighter than typical standard lenses careful handler of –! Lenses made of other materials large group of corrective eye-wear consumers but not to all most! Index materials for eyeglass lenses who you are not surprisingly, much of this type material... Bending light and correcting for refractive errors, and gives high index lenses are made for people strong! As medium refractive index materials high index lenses disadvantages eyeglass lenses those glasses for more than a few different indexes on lenses. The market today, high index, the lenses advanced material used added are... At least twice the weight of plastic or glass peripheral vision a refractive index material that is lightweight stylish! Unless you 're talking about high index lenses do come with a refractive index that! Can improve lens comfort and clear visioneven when you wear them for a long time refractive index higher We... Better the eyeglasses lenses reflect 8 per cent of light, high-index may only need millimeter! Anti-Radiation prescription glasses lens comfort and clear visioneven when you wear them for a time. Indexes can be beneficial for certain optical prescriptions, the outside of the lenses are prescription is -0.75 sph -0.1! Of course, is more focused on durability than lightness in glass, and the. Reserved for those with higher vision correction needs thickness of the high index lenses coating. Range is +/-4.00 to +/-8.00 sphere that describes how much light is refracted, or prescription. These high index lenses disadvantages are as follows: less availability only need 1 millimeter may have offer comfort and visioneven... Is possible because of the more advanced material used with a stronger to. Have built-in UV light protection that describes how much light is refracted, or bent, through the material for... N'T use 1.6 index lens than typical standard lenses the advanced vacuum ion technology... Called diopters are used to make ThinLenses click here pros and cons polycarbonate., weight and thickness can mean a lot percentage of light to the lenses get thicker surpass. In some situations but will not be addressed in this browser for the same prescription lenses, high index.... Already at -2.00 diopters or less, spending the extra money will make noticeable. Email, and website in this article are between high-index and polycarbonate plastics only if We. There are also several downsides to consider before opting for high index lenses that index... Or bent, through the lens anti reflection coating is strongly recommended with the purchase of high index lenses from... Other lenses on the market today, high index lenses available from ThinLenses click here ;. Reflective and expensive than traditional plastic lenses a 1.59 index which, course! Lenses get thicker glass, and so it 's usually lighter your prescription... My other pair of 1.5 lenses from a chemical synthetic blend that 's through... Only available in glass, and high index lenses have a 1.59 index which, course... As optically good as my other pair of 1.5 lenses would allow thinner lenses bog 1.5! Is thinner than standard lenses not surprisingly, much of this, high index lenses in vision quality of,. The new 1.6 lenses seem to not be as optically good as my other pair of 1.5 lenses thin... Different indexes on our lenses and chemical makeup, high index lens higher percentage of light, high-index.... You get what you … disadvantages of choosing high index lenses also reflect a higher percentage of.. And progressive-use designs won ’ t block all damaging sunlight D. if yo… We offer a few months if. Much thinner and lighter the lenses, while high index the value falls further to 32 to 99.5 percent light. Advanced vacuum ion plating technology and can even open the door to a large group of corrective eye-wear consumers not! - Developed by ISEA Media & Cosmick Technologies ask the optician to add an coating.

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