1.59 Vs 1.60 Index Lenses

Low lens index glasses will 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 address an array of vision correction. For those who have somewhat stronger prescriptions, these lenses can be a better choice than the standard lenses. These lenses are thinner and more powerful than their 1.5-index counterparts, handling SPH corrections between +/-5.00 and +/-4.00, and CYL corrections of +/-3.00 and below.

• depends on your prescription, that is indicated by your eye doctor.
• High index lenses have a higher index of refraction than regular lenses, which means they don’t must be as thick round the edges to work.
• If you have a solid prescription and are looking for thinner, lighter lenses with a more attractive appearance, high-index lenses are the way to go.

The aspheric greatly reduces the lens thickness at the nasal edges. The fact that the lenses are decentered 7mm each and rectangular shape means the outer edges of the lenses would be very thick. It’s easier to avoid thick lens edges through careful frame selection and selection of materials whenever possible. Introduced after and during WWII,acrylic lenseswere cheaper to create, more lightweight, and may be manufactured at a mass scale – a crucial necessity during wartimes. However, early acrylics were brittle; they might scratch and crack easily, not forgetting how they might often discolor and be cloudy over time. Acrylic is still found in frames along with other things, but aren’t really used as eyewear lenses anymore, thanks to improvements in plastics like CR-39.
Also, as opposed to lenses for nearsightedness which are thicker on the edges, lenses for farsightedness are thicker in the center. With regular lenses, this may significantly magnify your eyes and could make you feel a little self conscious at times. 1.59 index lenses are incredibly resilient, offer UV protection, and so are impact resistant. These lenses are made of a unique polycarbonate material and may be tailored to the individual. Coatings such as for example scratch-resistant or anti-reflective could be applied to 1.59 index lenses for additional security.

Single Vision Lenses

You have to opt for a 2mm edge on a semi-rimless, and which will instantly thicken the work. We make the hardest-working, highest-quality Blue Light eyewear.
If you’re wondering whether these kinds of lenses are a good option for you, this is everything that you must know. To help keep your eyeglass lenses in perfect condition for as long as possible, you should focus on lens strength. This means you will need a good knowledge of the differences between the various lens material properties.

• These reflections could be distracting or obtrusive, posing a danger to you and your well-being if you are traveling.
• In layman’s terms, this means that they have a larger capability to bend light rays and therefore can be thinner round the edges, unlike traditional lenses.
• These lenses include a high index of just one 1.74 and can reduce thickness of the lens of high-powered prescriptions.
• Stay on the surface of the latest news about prescription safety glasses, eyewear, sunglasses, and all of the trends in the market.

They have less refractive index than polycarbonates (1.53 vs 1.59), making them perfect for most prescriptions, safe for higher prescriptions that basically benefit from high index lenses. Trivex may be the preferred material for some eye doctors within their own lenses.

Clear Understanding Of Different Lens Indexes

If this isn’t a concern I would concur that 1.6 is best option of the two and worth the excess cost. This index is the most suitable for prescriptions having an SPH correction of +/-2.25 and below, or perhaps a CYL correction of +/-1.50 and below. This coating will change the tint of your lenses with regards to the amount of light they are subjected to, becoming dark outdoors and clearer indoors. This helps protect the wearer’s eyes from harmful UV rays and direct sunlight, protecting the wearer’s vision. The difference between 1.67, which is considered regular index and 1.74 is fairly small, and really, the only way you’ll spot the difference is if you have a prescription below a -6 or above a +4.
High index lenses with 1.74 high index are the thinnest lenses on the market, and are made only for people who have the highest prescriptions. If your prescription is lower than +/-6.00 sphere, there is no need that you can spend the excess money for an ultra high index lens. Index of Refraction is the speed of light in a vacuum divided by the speed of light in a given material. The resulting number (1.5, 1.6, 1.67, 1.74) is referred to as the “index.” The higher the number, the more light is slowed up or bent. This means high-index lenses bend light at steeper angles than standard-index, hard resin lenses. Therefore, high-index lenses need less curvature to achieve the same focal power.

Progressive Lenses are unique lenses, made to seamlessly incorporate distance, middle- and near- vision correction. Because these lenses are highly personalized, they are able to correct even the most unique eyes, and offer all the benefits of bifocal lenses minus the obvious horizontal line. Our High Impact 1.56 index lenses offer superior optical clarity, whilst delivering a light-weight, impact resistant lens that’s comparable to Polycarbonate lenses. The concept of double concave lenses would be to achieve thinner lenses for high minus powers.
Both front and rear surfaces of the lenses are concave and aspheric in design, thus giving flatter curves to reduce the edge thickness by approximately 35%. High-index lenses imply that the lens itself could be both thinner and lighter. This enables your glasses to be as comfortable and fashionable as possible.

Geek 2018 High Index Glasses

The idea would be to position the very best optics directly in front of the patient’s pupil and to reduce areas of the lenses where the chromatic aberration is most noticeable. There is absolutely no practical solution to eliminate chromatic aberration, but anti-reflective lenses can help patients tolerate the problem. Sure, they have made a lot of improvements over time plus they have better optics than their plastic cousins, but despite these advantages, they’re outweighed by their disadvantages. Glass lenses are heavier, can still break on direct impact, and will cause major damage to the eyes should they crack and shatter. It isn’t unusual for 1.67 high-index lenses and 1.74 high-index lenses to cost 3x to 4x the price of standard plastic or glass lenses. Prescription – Your prescription is what will ultimately regulate how thick your lenses will undoubtedly be.