1.59 Index Lenses Meaning

Materials on the top quality of the number produce thinner glasses. The difference will be more noticeable the more nearsightedness or farsightedness you have. They don’t seem thinner due to visual clarity, these lenses are a full 30% thinner than normal lenses and about 10%

• The weight of high-index lenses depends upon a factor called the precise gravity of the lens material.
• However, the introduction of high-index plastic materials has changed the landscape of eyewear.
• Toughness identifies resistance against breaking when subjected to shock or pressure.
• Polycarbonate lenses may also be ideal for the older generation, though retirees are often less likely to participate in dangerous jobs or active sports.

These lenses can be not even half the weight of regular glass lenses and 25% to 30% lighter than regular plastic lenses. High-index lenses are usually scratch resistant and may fit into nearly every type of frame. They are able to also be treated with anti-scratch, anti-reflective, and UV-protection coatings to boost vision and lens durability. There are various types of lens materials and they’re used depending on the amount of correction needed. These include 1.56 Standard Index, 1.57 Mid-index, 1.59 Thin & Light Index, 1.59 Polycarbonate, 1.61 High Index, 1.67 High Index, and 1.74 High Index.

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They are the easiest lenses and are contained in the frame price! Ideal for prescriptions of SPH (-5 to +4) and CYL (+/- 2). Most high index plastic type materials have less Abbe value, some only 30.

Conventional glass or plastic lenses reflect about 8% of light that otherwise would reach the attention. High-index lenses can reflect around 50% more light than regular glass or plastic lenses.

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High index lenses are lenses that have a higher “index” of refraction. In layman’s terms, because of this they have a larger capability to bend light rays and for that reason can be thinner around the edges, unlike traditional lenses.

Trivex gets the lowest specific gravity of popular eyeglass lens materials. This makes Trivex lenses very lightweight and comfortable Though Trivex lenses (index 1.53) could be only 10% thinner than regular plastic lenses, they could be up to 30% lighter.

To keep your eyeglass lenses in perfect condition for as long as possible, you must concentrate on lens strength. This means you need a good understanding of the differences between the various lens material properties. Polycarbonate 1.59 index lenses are a thin and lightweight material, that is very resistant to impacts. This material is indeed tough and shatter resistant that it is also used to manufacture airplane windows. Polycarbonate Lenses are ideal for rimless frames or anyone utilizing their glasses for activities.
You will probably get a good couple of progressive lenses because of this price range. 1.59 Index Lens Lenses with this particular index are produced from special polycarbonate materials. They are more durable and resistant to shock, which will make them an ideal choice for most people. Polaryte HD Polarized Sunglasses are the new gold standard for high definition vision. With 100 percent UV protection, Polaryte HD is specially made to cut glare and give you optimal clarity, color, and contrast. High-definition lenses are created to provide sharper vision in all conditions and reduce glare for nighttime driving.
Our thinnest lenses were created for the highest-powered prescriptions. These lenses are best for prescriptions with SPH corrections of +/-9.25 and above, and CYL corrections between +/-4.25 and +/-6.00. High-index lenses also have flatter curvatures than their standard plastic cousins. Aspheric design, when combined with high-index resin, will further thin and flatten both plus and minus powers.
The coating prevents liquid accumulation and smearing on the lens. Rather than clinging to the lens, water molecules cling to other molecules, forming droplets and rolling off the lens without leaving any smudges. In addition, it repels grease and prevents fingerprint stains from appearing on the lens, making it easier and quicker to clean. It is almost always indicated by a (-) close to the numbers under the Sphere/SPH group of your prescription. Toughness identifies resistance against breaking when exposed to shock or pressure. For example, while porcelain and glass both have a certain strength and resist deformation, neither is particularly tough and both have a tendency to crack or chip.