Is higher index lens better?

Your visual acuity improves when eyeglass prescriptions supply the necessary lens power (the amount of light-bending ability). If you don’t have higher refractive errors, there’s no real reason behind you to get yourself a high-index lens. But if you have a solid prescription and would like thinner, lighter lenses, then this type of lens is an excellent choice. High-index lenses can correct your eyesight better, are much more comfortable to wear, and appearance better too. The 1.56 Mid-Index lenses are automatically included in our frame prices.

• The abbe value of polycarbonate is 30, the cheapest of all lens materials making it the worst lens for optical clarity and integrity.
• As a result of materials had a need to produce them, high-index lenses do come at an increased cost compared to standard plastic lenses.
• Also known as the index of refraction or refractive index, it is measured by numbers and describes how efficiently a material bends light.
• You’ll get more choices of lensHigh index
• They are convenient if you don’t want to carry a set of clear eyeglasses and another couple of sunglasses.

High-index lenses are made from a special plastic-type material which allows your eyeglasses to be thinner and lighter since they bend light more efficiently. Many people enjoy using high-index lenses since they look better cosmetically and feel more comfortable. Choose a lens material with a refractive index higher than 1.60. The bigger the index of refraction, the thinner your lenses will be. Lenses with a refractive index of just one 1.67 and higher could be less than half the thickness of regular plastic lenses.

What Is Lens Index?

High-index lenses bend light more dramatically with less material, which explains why they’re thinner and lighter than other lenses. As a rule of

• Progressive glasses provide distance, intermediate, and near correction.
• It isn’t unusual for 1.67 high-index lenses and 1.74 high-index lenses to cost 3x to 4x the cost of standard plastic or glass lenses.
• When people have trouble with vision, such as for example farsightedness or nearsightedness , an optometrist may prescribe eyeglass lenses to improve refractive errors.

Trivex along with polycarbonate is great for rimless frames and those frames requiring drill mount screws through the lenses. Abbe value is a measure of the lens material’s dispersion of light. A lens with a minimal Abbe value causes a higher dispersion and leads to unwanted chromatic aberration. Chromatic aberration is really a distortion of the image as a result of inability of the lens to target all colors onto exactly the same focal point.

Aspheric Lenses For Better Vision And Appearance

When you are very farsighted or nearsighted, your regular lenses will most likely be quite heavy and thick. High-index lenses bend light better, so they don’t need to be as thick to work. High index may be the thinnest eyeglass lens available, in addition to being lightweight. Because these lenses have a tendency to reflect more light, most opticians and eye doctors recommend adding an anti-reflective coating to lessen glare.

There are various lens materials, lens coatings, tints, etc. and it can sometimes feel overwhelming. Understanding the different lens options available could make the process significantly less stressful. This information will explain the essential types of lens materials available and the most common lens options.
However, it’s still far better ask your eye doctor so your vision problems are taken care of. They are remarkably thin lenses and remain a fantastic choice for anybody seeking comfort paired with sharp, minimally distorted vision. They are around 20% thinner & lighter than polycarbonate and 40% thinner & lighter than standard CR-39 lenses with exactly the same prescription. An aspheric lens design gives several benefits to eyeglass lenses. Since the lenses are thinner, hi-index lenses may also be lighter and much more comfortable to wear. If you have a high prescription, high-index lens glasses could be made to become more cosmetically attractive and appealing.

Choose the best lenses for the prescription with the lens index chart below to learn the thickness of lenses you need to select for your new eyeglasses. Up to 50% lighter & thinner standard CR-39 lenses of the same prescription. 1.74 high index lenses will get around 10% lighter & thinner than 1.67 high index lenses and a whopping 50% lighter & thinner standard CR-39 lenses of the same prescription. Determining which lens is right for you personally can be a bit confusing but note that the higher the index number, the thinner and lighter the lenses are.
High-index lenses tend to be more expensive, and when you’re considering making the investment, it’s good to learn why you should or should not splurge on them. With these lenses, individuals can choose lens coatings, such as scratch-resistant or anti-reflective coating, to create up for just about any possible color differences or add further protection. The unique polycarbonate material makes lenses stronger and impact-resistant. A higher index means that light travels more slowly through the lens material and much more bending of light rays occurs. For that reason, some glass lenses usually do not require as much lens material as would glass lenses with a lower index.