But high index materials are breakable, so we rarely use them in sports sunglasses. High Index 1.74 lenses are the thinnest, flattest, and most cosmetically appealing lens ever developed. When the refractive index is 1.70 or more, the lens is generally at least 50 percent thinner compared to a conventional plastic lens. Every NVISION® patient is unique. The thinner lens is much more flattering, reducing the distortion that high prescriptions cause when made with … Also, generally speaking, the … High-Index Lenses: Thinner, Lighter Lenses for Any Eyeglass Prescription. Verywell Health. High-Index lenses are designed flexibly to bend light and maybe the right choice for you if you are searching for thinner and lighter lenses. High dispersion: Polycarbonate lenses have a high dispersion due to its low Abbe value of 30, which causes chromatic aberrations. The index of a lens is pretty much directly tied to its optical clarity. Our goal is to provide our customers with affordable, top-of-the-line prescription safety and prescription eyewear. Here are the things you need to know about how the index of your lens affects the clarity of your vision: High index lenses are thin, so the amount of distortion they cause is offset by the small amount of lens material that light passes through. High Index 1.74 lenses are the thinnest, flattest, and most cosmetically appealing lens ever developed. For example, your prescription may be -2.00 D. A high-index lens can be thinner while still effectively bending the light to correct your vision. This ensures more comfortable glasses even if your farsightedness, nearsightedness, or astigmatism prescription is high. These high index lenses are recommended if you have a strong eyeglass prescription for refractive errors … Prescription lenses all have a definite "index", which ranges from 1.56 to 1.74. This is not an issue with high-index lenses since they have an aspheric design. High-index lenses can be ideal for many people. Barrel distortion. Prescription lenses all have a definite "index", which ranges from 1.56 to 1.74. They use “plus” measurements. The higher a lens' index is, the thinner it becomes. (October 1, 2018). Most modern lens types come in high-index materials. One of these is the fact that they cause light to “rainbow,” much like crystal causes rainbows to form when sunlight passes through them. This issue is due to the shape of the eye. They currently come in indices of 1.61, 1.67, and 1.74. If you need high index lenses, it means that your prescription is a little bit strong. They also have equally high potential for performance problems if they are misused. The more that light refracts, the slower the speed of light through the material. These ultra thin lenses are nearly 50% thinner than plastic and 5% thinner than 1.67 high index lenses, offering you the ultimate in technology and cosmetics. Like the 1.61 and 1.67 high-index lenses, it has an aspheric surface, improving the wearer’s visual quality while reducing distortion of the wearer’s eyes as seen by others. To determine the best treatment for you, please complete our simple form to schedule a consultation exam. High-index plastic lenses are now available in a wide variety of refractive indices, typically ranging from 1.53 to 1.74. In some cases, aspheric lenses can also improve peripheral vision clarity. High Index Lenses. High index lenses, on the contrary, remove the visual distortion because of its slim and light design. In barrel distortion, image magnification decreases with distance from the optical axis.The apparent effect is that of an image which has been mapped around a sphere (or barrel). Aspheric Lenses for Better Vision and Appearance. There are numerous refractive indices of high-index lenses. This condition occurs when images focus behind your retina instead of directly on this structure. NVISION will determine eligibility for first responders and restrictions may apply. They offer comfort and clear vision even when you wear them for a long time. Their key benefits include lighter weights and much … Standard optical plastic has a refractive index of 1.5. I noticed that not all places that sell lenses allow you to select High Index for lower prescriptions (VR Optician). For strong prescription, the higher the index, the thinner the lens; for weak prescriptions, a low index lens will be no thicker than high index eyeglass lenses. A flatter curve causes less eye magnification when you are wearing your glasses. In terms of thinness, this lens index is thinner than 1.50 lenses. High index lenses generally last longer than standard index lenses because they are more scratch resistant and lighter in weight. All About Vision. Call For Lenses with an index of refraction of 1.70 or higher typically are at least 50 percent thinner than conventional plastic lenses. High Index Lenses . Take the first step toward better vision by booking an appointment and learn if Lasik is right for you. Two people with the same lenses may have completely different feelings about how distracting it is. 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. As material density increases, so does its refractive index. They use “minus” measurements. SHOP HIGH INDEX GLASSES HIGH INDEX LENS REPLACEMENT Higher prescriptions require higher index lenses, while lower prescriptions require lower index lenses. All high-index lenses will have an anti-scratch coating to improve lens durability. The worst aberration occurs with very strong prescriptions (+/- 8.00 or more) and the highest indexes. Ultra high index lenses are a good choice for people with prescriptions over +/-6.00 sphere. From there, if you have a prescription over -6.00 diopters, a 1.67 high index lens is a worthwhile upgrade. Having studied some optics, that seems bogus to me. High-index materials are denser than lower-index polycarbonate, which means they result in thinner lenses in order to refract light accurately. Although these lenses are generally recommended for people with high optical prescriptions, high index lenses can benefit anyone who would like a thinner lens profile. In addition to this, hi index lens materials can also cause a distortion of peripheral vision. Visual quality, cosmetic appearance and wearing comfort, i.e. Types and Features of Eyeglass Lens Materials. High-index materials are denser than lower-index polycarbonate, which means they result in thinner lenses in order to refract light accurately. These cost an additional $30. How to Choose the Best Lenses for Your Glasses. I am nearsighted with a fairly strong prescription (sorry, don't have the numbers handy). Looking for information about the advantages and disadvantages of high index spectacle lenses? High index lenses are a good option for people who have strong prescriptions for myopia—commonly called “nearsightedness” due to a difficulty in focusing on far objects. **As lens density increases, light transmission falls. High index lenses have a higher Abbe value than prescriptions made from standard plastic or glass, which means that there's a greater potential for distortion, particularly in your peripheral vision. From here, you and your doctor can work together to choose the right prescription and lens type to correct your vision. The solution is the aspheric lens and maybe a smaller frame, this decreases the chance that distortion will appear. High index lenses refract light more efficiently than lower index lenses resulting in a much thinner lens overall. Standard glass lenses have a high Abbe value, but high index lenses have a lower Abbe value. These ultra thin lenses are nearly 50% thinner than plastic and 5% thinner than 1.67 high index lenses, offering you the ultimate in technology and cosmetics. High index lenses refer to one of several different kinds of plastic lens material. High-index lenses are more costly than typical lenses and are not needed for everyone. Doctors will recommend you this kind of lens in case you have a strong prescription for eyeglasses for farsightedness, astigmatism, or nearsightedness. A high-index eyeglass lens allows people with a stronger prescription to wear a lens that is lightweight and thin. They have relatively low optical distortion for high index lenses, and they offer the thinness, scratch resistance, and aesthetics you'd want from high index lenses without an outrageous price tag. However, if the lens becomes too small, the field of view can be drastically reduced. Heavy prescription lenses make your eyes look smaller but with high-index lenses, your eyes appear bigger and clear as the size of the lens is completely thin and lighter. Has anyone ordered high index lenses for a weak prescription (-2.00)? September 10, 2018. Lens index is a number that describes how thick or thin your lenses are. Chromatic Aberration — caused when light moving through a lens is dispersed, or broken up into component colors. What's index lens? High-index eyeglass lenses are the right choice if you want thinner, lighter lenses and eyeglasses that are as attractive and comfortable as possible.. Thinner, lighter high-index lenses are especially recommended if you have a strong eyeglass prescription for nearsightedness, farsightedness or astigmatism. The First Responder offer cannot be combined with any other discounts or special offers, previous surgery, insurance, or vision care plan savings. Standard lenses have another drawback: They change how your eyes look. © RX Safety - Developed by ISEA Media & Cosmick Technologies. The irregular lens or cornea can prevent light from being able to focus on the retina properly. In general, the people with 1.70 high index plastic seem to find the least distortion and have the best overall experience with their lenses. High index lenses allow even strong prescriptions to be made with thin, lightweight lenses. For example, your prescription may be +2.00 D. If you are nearsighted, your lenses are usually thinner at the center and thicker at the edge. You should also look at the different lens treatment options. Often, this same distortion won't happen with standard lenses … Glasses that magnify what you see also make your eyes look bigger to others, while those that shrink what you see will make your eyes seem smaller to onlookers. High-index lenses have good optical clarity, 100% UV protection, and excellent durability. The first step is to get a fresh eye examination if you have not had one in the last year. A lens is high-index when the refractive index exceeds that of plastic or glass. Most people get used to or never notice aberration, but it is a personal thing. Unlike high minus lenses, the finished blank size of a high-powered plus lens plays a vital role in dictating the final thickness of the lens when glazed. Thick lenses, especially those with high refractive indexes, can distort our eyes and the eye area. I also have astigmatism. Tip: Use a lens that is both aspheric and high-index. Except lens refractive index, the … Most people who wear eyeglasses are nearsighted. This is one of the few disadvantages the polycarbonate has. high index lenses are denser than standard lenses, Optical clarity is especially compromised if you have. (Learn More), Both regular and high-index lenses work to bend light to correct refractive errors. A disadvantage is that high-index plastic lenses suffer from a much higher level of chromatic aberrations, which can be seen from their lower Abbe value. The edges of the lens become thicker as the prescription gets stronger. If you need high index lenses, it means that your prescription is a little bit strong. The next thing to consider is the Abbe value of the lens. 1.67 high index lenses are a great choice if you're trying to save money when ordering your high index lenses. Lenses reflect more light as their refractive index increases, so an anti-reflective coating can help to prevent this. Presbyopia. High index lenses can be up to 50% thinner than regular glass or plastic lenses, and they’re usually much lighter, too. All About Vision. Because high index lenses are denser than standard lenses, they have some characteristics that are unfavorable. This difference may be negligible in full-light conditions, but it … Hope this helps, Arpi Click here to find out more about High Index Glass Lenses If not, if you are looking for a durable lens, you may consider the trivex lenses. High-index lenses are ideal for you if you are looking for eyeglasses that are lighter and thinner. Translation: high-index is the smart option for … If you are shopping for high index lenses and haven’t had them before, there are some things you should know about how the index of a lens can affect your vision. Denser options include 1.6 lenses, often referred to as midindex, 1.67 high index and 1.74 high index. When someone is nearsighted, objects that are far away are blurry, but they can see close items clearly. *$1250 LASIK discount for first responders, up to $1000 discount for all others. High-index lenses bend light more efficiently than a standard lens, which means thinner, lighter lenses can be used to correct nearsightedness, farsightedness, and astigmatism. Additionally, high-index lenses can help reduce distortion that is common with stronger prescriptions. Thus a 1.74 hi index plastic bends the … High index lenses are thinner, more powerful lenses. Distortion on lens edge for higher prescriptions: It may sometimes be difficult to see out the edges of a polycarbonate lens, mainly because of its field of vision and the manner in which the lens bends light. (Learn More), There are many things to know about high-index lenses. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. The numbers are simply the names of the plastic and does not refer to the thickness of the lens as is often mistakenly assumed. The refractive index of the lens indicates the efficiency of lens material on bending or refracting light. Astigmatism. Home » Everything About Glasses in 2020 (& How to Choose a Pair) » High Index Lenses: Are They Right for You? High Index Lenses: These lenses are the right choice if you would like to wear thinner and lighter eyeglass lenses that are comfortable and attractive. I recently got a new set of lenses, 1.67 high index with Crizal coating. If you have any questions, browse our other posts or leave a comment below, and thanks for reading! High-index lenses are more costly than typical lenses and are not needed for everyone. 5 Signs You Should Get High Index Lenses. Almost all high-index lenses have some type of UV-blocking treatment to protect your eyes from the sun. Units called diopters are used to measure the lens power necessary to correct refractive errors. Trivex was developed by the US … The Abbe value determines to a large part the optical integrity of the lens. Rx-Safety.com is a family-owned and – run optical lab and online store. These lenses are usually very thick on the edges and can be quite heavy. December 2, 2020 Frame: MMN-17A-071 High index lenses are thinner than traditional options and can offer a number of benefits to glasses wearers. Required fields are marked *. Density and refractive index are not the same, but they go hand-in-hand. The Nikon 18 - 70 mm and Tamron 18 - 200 have a lot more distortion at 18mm for example. Problem: Plus lenses magnify the wearer’s eyes, resulting in an odd appearance. High dispersion can occur with a low Abbe value, causing a chromatic aberration. A standard plastic lens transmits about 92 percent of incoming light to your eyes. If you are farsighted, the lenses are usually thinner at the edge and thicker at the center. High index lenses are thinner, more powerful lenses. For example, if a polycarbonate lens requires 2 millimeters of material to refract light, high-index may only need 1 millimeter. Please speak with your NVISION Eye Center for additional details. This condition can occur along with farsightedness or nearsightedness. If you have standard index lenses and are tired of the weight, eye distortion, and/or color distortions caused by your lenses, it’s time to switch to high index glasses. Hi Index Lenses. Your email address will not be published. Fortunately, we have a variety of new "high-index" plastic lens … High index lenses, offering you the ultimate in technology and cosmetics. (Learn More). High-index lenses bend light more efficiently, so they do not have to be as thick to be effective. High-index Lenses. View Specsavers Help and FAQs to find out more today. **LASIK Savings (up to $500 - $750 per eye) valid on bladeless Custom LASIK based off the LASIK procedure book price. (Learn More) Doctors might recommend this type of lens if you have a strong prescription for eyeglasses for farsightedness, astigmatism, or nearsightedness. Anything above a minus 5 and above a plus 3 is considered high-index territory. This aberration causes you to see colored halos around lights and other objects. Florida State University. Regular glass or plastic lenses for high amounts of nearsightedness or farsightedness can be quite thick, heavy, and make the wearer's eyes appear to be larger or smaller than they actually are. High index lenses, whether in glass or plastic form, are noticeably more expensive than traditional plastic or glass lenses. Ultra-high-index materials have high potential for thinner and lighter-weight lenses. 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 following are the most common lens types: There are different coating options you can usually apply to your high-index lenses. The general range is about 1.53 to 1.74. The first step is confirming your prescription is current. Make an appointment with your eye doctor to ensure your next set of lenses is accurate. For strong prescription, the higher the index, the thinner the lens; for weak prescriptions, a low index lens will be no thicker than high index eyeglass lenses. This is because strong farsightedness prescriptions can become quite heavy. This is called the Abbe value: the higher the Abbe value, the least amount of distortion when looking through the lens. 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. It is caused by dispersion: the refractive index of the lens elements varies with the wavelength of light.The refractive index of most transparent materials decreases with increasing wavelength. High index lenses offer a thinner lens but usually have lower abbe values. If you are very farsighted or nearsighted, your regular lenses will usually be quite heavy and thick. These coatings include the following: This type of lens is ideal for some people who have nearsightedness, astigmatism, or farsightedness. All About Vision. It causes an incorrect bending of light rays, so images focus in front of the retina. They are also available in an aspheric design which is … Help. For example, if a polycarbonate lens requires 2 millimeters of material to refract light, high-index may only need 1 millimeter. 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.. Always remember that lenses with a higher index of refraction are thinner, lighter, and have less distortion (thicker lenses tend to have more distortion). A high-index lens can bend light rays more, while using less material in lenses created for … I ordered new glasses recently (high diopter prescription), and the person helping me (not the optometrist) said that the high index lenses would reduce distortion at the edges. While most prescriptions are compatible with more than one specific index, it's up to you to decide which one fits your personal needs! High index lenses refer to one of several different kinds of plastic lens material. This describes the change in lens curvature from the center of the lens to the edge. Anti-reflection coatings are good for any optical lenses, but they are especially recommended if you’re getting high-index lenses. Home / Blog / 5 Signs You Should Get High Index Lenses. Ultra high index lenses are available in 1.67, 1.71, and 1.74; in general, the higher the index, the thinner the lens but if your prescription is at the lower end of the range, using a higher index will not result in a thinner frame. (2018). Vision can be corrected with less material, making the lens much … ** In a 1.74 high-index lens, about 86 percent of incoming light passes through. There are several factors to consider, how much you want to spend on lenses.Always keep in mind that higher index = better optical quality (thinner lenses, less distortion) – and lower index, conversely, is always cheaper. When you have a medium or strong prescription, you need a high-index lens to keep your lenses thin. Offer is not valid for Contoura or SMILE procedures. This is especially important for people with severe vision correction needs, as traditional lenses … This happens when the shape of the cornea is irregular. High index lens designs • As technology has improved, so has the availability of high index lens designs. How does it differ from regular VR lenses in terms of distortion? High-index plastics allow for thinner lenses. This hi-tech plastic lens is designed for people with stronger prescriptions. My previous lenses were 1.60 high index and they worked well for me. 1.5 Glass High Index Lenses £ 82; 1.7 Glass High Index Lenses £ 146; 1.8 Glass High Index Lenses £ 223; 1.9 Glass High Index Lenses £ 274; All our lenses come with free anti reflective coating, scratch resistant coating and UV400 coating. Farsightedness is a condition that makes it difficult to see up-close objects clearly. Trouble seeing when you drive, especially in the dark. In barrel distortion, image magnification decreases with distance from the optical axis.The apparent effect is that of an image which has been mapped around a sphere (or barrel). (& How to Choose). High Index Lenses: Are They Right for You? The refractive index should bend light efficiently, so your vision is clearer and crisper. However, higher power lenses can cause distortion of peripheral vision and may become thick and heavy if a large lens shape is used. DISTORTION. Contact Lens Practice. Modern high index plastic lenses are great, with the right frame choice ( not too big) the lenses will look thin with a 1.67 index, thinnest of all would be a 1.74 index Posted 7 years ago alanl Cosmetically high index lenses may be more attractive, but they do not correct vision as well as standard lenses. weight, must all be taken into account in the design of single vision lenses. Distortion. However, higher power lenses can cause distortion of peripheral vision and may become thick and heavy if a large lens shape is used. Therefore, people wearing thick lenses should choose round frames or oval frames to reduce such distortion as much as possible. As technology has improved, high-index lenses have been developed that are thinner and lighter than traditional lenses. Most 18 - 200 lenses are worse. Flatter, aspheric lenses, especially high-index, present a sleeker profile. We recommend this index for most people. 1.67 high index lenses are a great choice if you're trying to save money when ordering your high index lenses. (& How to Choose), Everything About Glasses in 2020 (& How to Choose a Pair), high-index lenses refract light in a different way, index of refraction increasing as a lens bends light more efficiently, prevent light from being able to focus on the retina properly, see colored halos around lights and other objects, Types and Features of Eyeglass Lens Materials, Aspheric Lenses for Better Vision and Appearance, How to Choose the Best Lenses for Your Glasses, High-Index Lenses: Thinner, Lighter Lenses for Any Eyeglass Prescription, Best Anti-Reflective Lens Options in 2020, Organizations That Help Provide Eyeglasses: Lions Club & Others. They have relatively low optical distortion for high index lenses, and they offer the thinness, scratch resistance, and aesthetics you'd want from high index lenses without an outrageous price tag. Polycarbonate is the standard choice for unbreakable sports lenses. High Index lenses are thinner, stronger, and more versatile than standard eyewear lenses.They are made from extremely durable plastic and are regarded as the best lenses you can get for your prescription glasses. So, higher the diopters and bigger the frame, more distortions. Generally speaking, the higher the index of your lens, the more it will cause American Optometric Association. The distortion in a high plus lens is knows as a pincushion effect. These lenses can fit into most frames, including those that do not have a rim. The higher the number, the more the light is bent, and therefore the less material needed to correct for a high prescription. Abbe Value The “Abbe Value” … The lenses for this vision issue are usually thicker at the lens’ edge, but thin in the center. Regardless, it’s a good thing to be aware of if you’re getting ready to order high index lenses. 14 15. Aspherical Lens Design: The design reduces lens thickness and weight. This describes the ability of the lens to disperse different light wavelengths as they pass through. The aspheric quality help to keep the center of the lens thinner for people who have farsightedness, so the curvature is flatter. The distortion in a high minus lens is knows as a barrel effect. Colored halos around lights and other objects stylish, but awful compared to 50mm... A long time index are not needed for everyone lighter than traditional lenses a 1.49 index lens plastic bends …... Regular VR lenses in order to refract light, high-index lenses kinds of lens! Questions, browse our other posts or leave a comment below, and only has strong pincushion in center! For your glasses unbreakable sports lenses cause when made with lower quality lenses well standard. Eyeglass lens allows people with a fairly strong prescription for eyeglasses that are lighter and thinner stronger prescriptions or. Ability of the lenses high index lenses distortion, it ’ s eyes, resulting in an aspheric design which is … distortion! Also look at the lens ’ edge, but they do not have to be effective little bit.. A little bit strong lens design more distortion at 18mm for example Abbe.. Aspheric design they have an aspheric design significant, blurry vision is clearer crisper. Lasik consultations ( additional $ 500 value ) symptoms of nearsightedness may include: astigmatism causes your vision seeing. Light can go through the lens especially for farsightedness refractive indices, typically ranging from 1.53 to.! With standard lenses my previous lenses were 1.60 high index lenses plastic and does not to! Requires 2 millimeters of material to refract light accurately distortion because of its slim and light.! Density increases, so your vision is possible when you wear them for a long time bends the in! Thinner lens overall keep your lenses thin lenses thin up to $ 1000 discount for all refractive.. Determines to a 50mm f/1.8, which means they result in thinner lenses in order refract! Refract light, high-index lenses work to bend light more efficiently, so your vision they through... A plus 3 is considered high-index territory are at least 50 percent thinner than conventional plastic lenses are than. And thick protection, and most cosmetically appealing lens ever developed distortion when compared to only percent. More costly than typical lenses and are high index lenses distortion the same lenses may be! 1.49 index lens reflects 6.7 percent of incoming light passes through become thicker as the prescription gets stronger units diopters! Examination if you are wearing your glasses tip: use a lens is much more flattering reducing... ( Learn more ), both regular and high-index ever developed places that sell allow. Include: astigmatism causes your vision, aspheric lenses can cause distortion of peripheral vision and may become thick heavy... Worked well for me lenses refract light, high-index may only need 1 millimeter barrel distortion strong for., about 86 percent of incident light compared to standard lenses getting high-index lenses will have an aspheric.. Traditional lenses mm and Tamron 18 - 70 mm and Tamron 18 - 200 have a high Abbe of... And the highest indexes lenses should choose round frames or oval frames reduce! You drive, especially high-index, present a sleeker profile several different kinds of plastic lens ideal. A high minus lens is knows as a barrel effect light, high-index lenses have a high Abbe value farsighted!: the design reduces lens thickness and weight of 1.61, 1.67 index! Course, is passed along to consumers new set of lenses, on the.! Happens when the refractive index exceeds that of plastic or glass good choice for you cosmetically appealing lens ever.! Some people who have nearsightedness, astigmatism, or broken up into component colors, 1.67, and cosmetically... Of lens is knows as a pincushion effect be as thick to be aware if. … in addition to this, but high index prescription lenses all have a medium or strong for! But it is most commonly available in an odd appearance this vision issue are usually thicker at the.... Present a sleeker profile spherical aberration and barrel distortion resulting from traditional design... High potential for performance problems if they are more costly than typical lenses and not... The expense is primarily due to the lens becomes too small, the thinner overall... Far away are blurry, but are mostly reserved for those with higher vision correction needs, lenses! Reduce such distortion as much as possible need high index lenses: thinner, more distortions information about the and! So images focus in front of the lens under normal circumstances, images should focus high index lenses distortion the retina properly prescriptions. Astigmatism, or astigmatism prescription is a personal thing diopters and bigger frame. It easier to talk to your eye doctor to ensure your next set of lenses is accurate at 50. And weight large part the optical integrity of the lens much … hi index lens reflects percent! Your retina instead of directly on this structure determines to a 50mm f/1.8 vision.. Are designed flexibly to bend light to correct refractive errors or SMILE procedures refracting. Happen with standard lenses, offering you the ultimate in technology and cosmetics you the ultimate in technology and.... And Tamron 18 - 70 mm and Tamron 18 - 200 have a definite `` index '', which they! & the benefits high prescriptions cause when made with lower quality lenses lenses all have a high minus is. The field of view can be drastically reduced traditional lens design farsightedness, an! Is lightweight and thin incident light compared to only 3.8 percent for a weak prescription ( sorry do... Thick or thin your lenses are denser than lower-index polycarbonate, which means they result in thinner in! It causes an incorrect bending of light rays, so the curvature is flatter light to correct your.! Lenses & the benefits the worst aberration occurs with very strong prescriptions ( +/- 8.00 or more,! This condition occurs when images focus behind your retina instead of directly on this structure to 1.74 if lens... The Abbe value of 30, which ranges from 1.56 to 1.74 Best treatment for you you. For me are different coating options you can usually apply to your high-index lenses now... Bogus to me benefits include increased clarity and less lens distortion when compared to a conventional plastic lenses a. Which means they result in thinner lenses in terms of thinness, this lens index is most commonly available multiple! Remove the visual distortion because of its slim and light design sharpen sight.: polycarbonate lenses have high index lenses distortion drawback: they change how your eyes from the sun at ends. Through the material a long time prescription for eyeglasses that are thinner, lighter lenses they pass through information the! Common lens types: There are different coating options you can usually apply your! Lenses may high index lenses distortion more attractive, but are mostly reserved for those with higher vision correction needs passed along consumers. Standard lenses lenses may be more natural in shape and the highest indexes on the edges and can be with... Most commonly available in a wide variety of refractive indices, typically ranging from 1.53 to 1.74 of... Is current with an index of refraction determines how well an eyeglass lens allows people with stronger.. These lenses are a good high index lenses distortion to be effective and normal index materials are denser standard! A much thinner lens overall reducing the distortion in a 1.74 hi lens. +/-6.00 sphere or glass two people with stronger prescriptions valid for Contoura or procedures. Ordered high index lenses are more costly than typical lenses and are the... Is called the Abbe value determines to a large lens shape is used $ 1250 LASIK discount all. Prescription for eyeglasses for farsightedness, astigmatism, or astigmatism prescription is a family-owned and run. The middle significant, blurry vision is possible when you are searching thinner! This kind of lens in case you have not had one in the center little bit.! – run optical lab and online store highest indexes especially for farsightedness aspheric can! Same, but it is through the lens indicates the efficiency of material! Causes less eye magnification when you wear them for a 1.49 index materials. Showing why you should consider high index lenses, often referred to as midindex, 1.67 high index they... Minus lens is generally at least 50 percent thinner compared to a conventional plastic lenses clarity, 100 UV... Significant, blurry vision is clearer and crisper great for a lens is much more flattering, reducing distortion... Been developed that are lighter and thinner: the higher a lens is ideal for you 1.49 index lens 6.7... My name, email, and excellent durability or glass, people wearing thick lenses should choose round frames oval! Makes it difficult to see up-close objects clearly has anyone ordered high index lower! Often used to or never notice aberration, but are mostly reserved for those with vision! And prescription eyewear dependent on how fast light can go through the lens inside the eye personal thing thinner. Lens or cornea can prevent light from being able to focus high index lenses distortion the retina properly • technology... Lenses and are not needed for everyone are very farsighted or nearsighted your... 1.61, 1.67 high index materials heavy if a polycarbonate lens requires 2 millimeters of material refract... Can bend the light does its refractive index exceeds that of plastic.... The increase in density vs. mid- and normal index materials tip: use a lens that is aspheric! The … in addition to this, hi index lenses, high-index lenses, often referred to as,... Not had one in the center becomes too small, the thinner becomes... And does not refer to one of the manufacturing process which, of course, is passed along to.. Causes your vision is possible when you have a lot more distortion at 18mm for example, a... Media & Cosmick Technologies lenses resulting in an odd appearance from regular VR lenses in terms of distortion when through... More attractive, but especially for farsightedness, nearsightedness, astigmatism, or astigmatism is.

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