High refractive index lens

A lens index is a numerical value that expresses the thickness and thinness of a lens. The higher the lens index, the thinner the lens. A higher power lens requires a higher power lens, and a lower power lens requires a lower power lens.

What is a high index lens and what is the difference?

High index lenses are thinner and stronger lenses. Lightweight and stylish, but primarily for those who need advanced vision correction. Most prescriptions are compatible with multiple specific indices, but it's up to you to decide which one fits your personal needs!

Differences in eyeglass lens refractive indices can have a large impact, so it's important to learn what high-index lenses mean. Which one you get depends on your prescription and lifestyle. Thicker lenses are more affordable but can only cover low vision correction needs. . In terms of price/quality balance, polycarbonate lenses with a refractive index of 1.59 are compatible with most prescriptions and are very durable.

Recommended lens index

Lens index Features SPH CYL
1.56 INDEX LENS Ideal for moderate to strong prescriptions. -3.00 to+3.00 +/-2.00
or below
1.60 INDEX LENS Thinner and lighter than regular lenses. Stylish and ultra-thin, ideal for strong prescriptions. -6.00 to+6.00 +/-4.00
or below
1.67 INDEX LENS Extremely thin, good choice for very strong prescriptions. -8.00 to+8.00 +/-6.00
or below
1.74 INDEX LENS Thinnest possible, best for highest prescriptions. -14.00 to+12.00 +/-6.00
or below

You're all set!

Now that you have a clear lens index for your prescription, you are ready to stock a wide range of men's and women's frames.

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FAQ

What are high refractive index lenses made of?

High index lenses are made from a special kind of plastic that refracts light more effectively than standard index lenses. Because of this, they can usually be made thinner than other lenses and, for strong prescriptions, provide perfect vision correction.

Do high index lenses make my eyes look smaller?

A high refractive index lens has less aberration than a low refractive index lens with the same prescription. If you have a high prescription and large lenses, your eyes may appear smaller or larger depending on whether you are nearsighted or farsighted. A high refractive index lens can reduce this effect.

Do you need high refractive index lenses?

Those with high prescription glasses are advised to use high index lenses to keep the lenses as thin as possible. Besides being beautiful, thin lenses reduce the overall weight of the glasses and make them more comfortable to wear for long periods of time.