In general, the higher the index, the thinner the lens. (For example, a 1.61 lens is thinner than a 1.50 lens.) During the checkout process at Zenni, choosing a higher lens index will be the most direct way to ensure you have the thinnest lenses possible.Feb 9, 2021
Is the a big difference between 1.57 and 1.61 index lenses?
The main difference between 1.57 and 1.61 index lenses is the thickness of the lens material. ... If the lens power is approximately -4.00, it may be more suited to opt for 1.61 index lenses. The thickness is around 3mm to 4mm.
What is a lens index?
Lens index is a measurement on the lens thickness chart that dictates the thickness of your lenses. Made from higher-quality material, a high index lens will be able to deliver more powerful correction without the need for thicker lenses.Jul 6, 2021
What is a good lens index?
A high-index lens may be recommended if your optical prescription is above 2.00 diopters. High-index lenses have a refractive index above 1.50— ranging from 1.53 to 1.74.Nov 25, 2020
What is the difference between 1.56 and 1.61 lenses?
What is the Difference Between 1.57 and 1.61 Index Lenses? The main difference between 1.57 and 1.61 index lenses is the thickness of the lens material. ... For example, if the lens power is approximately -2.00, it may be more suitable to opt for 1.56 index lenses. The thickness is around 3mm.
What is the difference between 1.50 and 1.61 lenses?
The 1.61 are 20% thinner than 1.50 Standard and are recommended for full-rim or semi-rimless frames. These work well for prescriptions above +4.00 or below -4.00.
What are 1.57 Mid index lenses?
The 1.57 mid index lenses are meant for people with moderately strong prescriptions, and they are thinner and lighter than standard lenses. The lens is a polycarbonate composite made from polycarbonate, other polymers, and resins that keep it thinner and lighter than the standard 1.50 lens.Feb 24, 2021
Is there a big difference between 1.67 and 1.74 high index lenses?
The difference between 1.67, which is considered regular index and 1.74 is quite small, and really, the only way you'll notice the difference is if you have a prescription below a -6 or above a +4. However, if you are in need of a very strong prescription, it is absolutely worth the additional cost!
What is the cost of high index lenses?
If you're looking for a “higher” index (1.74) plastic, you'll be paying between $175-$225. For high index glass, expect to at least pay $200, and maybe as much as over $300 for your lenses. High index lens prices are going to increase as you increase index, extras, and coatings.Sep 3, 2021
Can I Get High index lenses?
High index thin lenses are available with many of the same options as traditional lenses; they can be either single-vision or progressive. ... Photochromic high index lenses (known to some eyeglass wearers as light-adaptive or variable-tint lenses) are also available.Sep 8, 2020
Should I get 1.67 or 1.74 lens?
1.74 high index lenses are better for those looking for the thinnest lens possible; generally, people with extremely high prescriptions choose this option. 1.67 high index lenses are better for those looking to save money or those who do not have extremely high prescriptions.Aug 5, 2021