What is the difference between 1.57 and 1.61 index lenses?

This is a great choice for semi rimless and rimless frames due to its tensile strength. Here is the strongest lens material in existence and is therefore recommended for used in children’s, sports and safety glasses.

• Though it isn’t guaranteed you’ll even notice the difference.
• At the same time, they can still be coated for various functions.
• The more that light must refract, the slower the speed of light is going through the material.

If you’re wondering whether these kinds of lenses are a great option for you, this is everything that you should know. While both regular and high index lenses function in exactly the same way, high index lenses are created to bend light better — leading to thinner and lighter lenses. Regular lenses which contain a solid optical prescription usually require a thicker and heavier lens so as to bend light better and correct the high refractive error. Generally, the index number ranges from 1.50 to 1 1.74 where 1.74 index is known as to be the thinnest lens. All inclusive frames are generally made up of standard or regular lenses of plastic material. Standard lenses are thicker compared to the high-index lenses but are much affordable.
work or exercise, a more durable index is most definitely recommended for you. Another thing to bear in mind is that lenses with a solid prescription power, even though they are high-index, can “shrink” your face when worn.
Most of the people who wear glasses are nearsighted, meaning that the corrective lenses they wear are thin in the guts but thicker at the edge of the lens. The stronger their prescription is, the thicker the edges of these lenses are. The lightest and thinnest plastic lens material currently available on the market. This material is only recommended for very strong prescriptions, and is not able to be tinted. 1.74 index lenses are great for full rim, semi rimless and rimless frame styles. They’re lightweight and stylish, but are mostly reserved for all those with higher vision correction needs.

Do I Want High Index Lenses For Astigmatism?

High-index lenses contain less material than regular lenses and are therefore lighter and more comfortable. The image below compares the lens thickness of a normal plastic lens (1.50) to probably the most commonly prescribed high-index lenses. High Index 1.74 lenses will be the thinnest, flattest, and most cosmetically appealing lens ever developed.

The 1.74 is made thinner and flatter than standard spherical lenses, which helps reduce the magnification of the eyes. Determine which lens is most beneficial for you predicated on your prescription, frame type, and lifestyle. Our lenses are made out of advanced plastics and so are obtainable in seven indexes, that will determine how thick or thin your glasses lenses will undoubtedly be. Those with a stronger prescription often prefer high-index for thinner lenses, while those people who are active may need impact-resistant options. If you’re searching for a pair of glasses that are light, can be set in semi-rimless or rimless frames, and also have a sleek modern look, high index lenses may be the best choice for you personally. However, if you’re physically active throughout the day or frequently take part in sports, some on the low end of the lens index could be more suitable.

57 Index Lens

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. Prescription – Your prescription is exactly what will ultimately determine how thick your lenses will be.

• It all really depends on your individual preferences and, most importantly, your prescription.
• When you are wearing your first couple of progressive lenses, you may need a short adaptation period to become fully comfortable.
• We offer both prescription and non-prescription eyeglass lenses.

An improvement in the lens index of your glasses can have a dramatic influence on your lifestyle. Low lens index glasses will undoubtedly be thicker but less expensive and only offer a low vision correction level. High index lenses have less material, making them thinner, lighter, and customized to handle a variety of vision correction. Want to know the differences between Trivex and polycarbonate lenses? Trivex 1.53 lenses are very lightweight, suitable for all types of frames, and excellent for kids and sports. They are a fantastic choice for strong prescriptions, including -4.25 to -6.75 and +4.25 to +6.75. This index is effective with full-rim plastic and acetate, full-rim metal, half-rim, and rimless frames.

Lens Index

Depending on the type of frames you choose, you may want to select a particular index. When a product is offered for cheap, there’s usually a catch. I admit I was skeptical about Zenni Optical myself, and I was fully prepared to discard the glasses I ordered should they turned out to be a hot pile of cheap garbage. I received a follow-up email on September 15 telling me that my glasses were being manufactured.
If you want more information about our lens technology, including our state-of-the-art computer glasses, please contact Felix Gray for more information. We can also help you with your non-prescription eyeglass needs aswell. However, Zenni Optical controls their own pipeline from start to finish. They have their very own designers and their own manufacturing unit that produces frames in bulk and lenses on demand. They cut right out the wholesalers and retailers and instead sell directly to customers online, meaning they will have no distributions costs and no overhead charges for running physical stores. Many of these savings are reflected in Zenni Optical’s pricing.