1.74 High Index Plastic Lenses

The Thinnest, Lightest Plastic Lens Option for High-Power 
Eyeglass Prescriptions


Why Choose 1.74 High Index Lenses?
 

1.74 high index lenses are the thinnest standard plastic lenses available, making them ideal for customers with strong prescriptions (±6.00 and above) who want the lightest, most attractive lenses possible.

 

Who Are 1.74 Lenses Best For?
 

Choose 1.74 high index lenses if you:

  • Have a strong prescription (typically ±6.00 or higher)
  • Want the thinnest lenses available
  • Prefer lightweight glasses that reduce pressure on the nose
  • Want lenses that look sleek and slim in any frame style
  • DON'T select these for safety glasses unless you have a high prescription.

To maximize clarity and performance, pair your 1.74 lenses with:

  • Anti-Reflective (AR) Coating – reduces glare for night driving and digital use
  • Scratch-Resistant Coating – protects your ultra-thin lenses
  • UV Protection – blocks harmful UV rays
  • Blue Light Filter (optional) – ideal for computer work

Pros & Considerations
 

Pros

  • Thinnest plastic lens material available
  • Lightweight and comfortable
  • Superior optics for strong prescriptions
  • Best aesthetic results in high-power lenses

Considerations

  • Higher price compared to standard lenses
  • AR coating highly recommended to reduce reflections

Perfect for Customers Who Want ...

 Sleek, thin lenses
 Lightweight glasses
 Premium visual clarity
 A more attractive fit for strong prescriptions
 


 
 

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Frequently asked questions

Have questions? We’re here to help

What are 1.74 high index lenses?

1.74 high index lenses are the thinnest plastic lenses available on the market. They are made from a specialized material with a refractive index of 1.74, which bends light more efficiently than standard lens materials — resulting in dramatically thinner and lighter lenses, especially for strong prescriptions.

Who should choose 1.74 high index lenses?

1.74 lenses are ideal for people with strong prescriptions, typically -6.00 or higher in myopia (nearsightedness) or +4.00 and above in hyperopia (farsightedness). If you've struggled with thick, heavy lenses in the past, 1.74 high index lenses can make a significant difference in both comfort and appearance.

How thin are 1.74 lenses compared to standard lenses?

Compared to standard 1.50 index lenses, 1.74 high index lenses can be up to 50% thinner. For example, a prescription of -8.00 that would produce a very thick lens in standard material becomes noticeably slimmer and more cosmetically appealing in 1.74 index material.

Are 1.74 high index lenses lighter than regular lenses?

Yes. Because less material is needed to achieve the same optical power, 1.74 lenses are significantly lighter than standard lenses for the same prescription. This reduces pressure on your nose and ears, making them much more comfortable for all-day wear.

What coatings are available for 1.74 high index lenses?

1.74 high index lenses are compatible with a full range of coatings including anti-reflective (AR) coating, scratch-resistant coating, UV protection, blue light blocking, and photochromic (light-adaptive) treatments. An anti-reflective coating is especially recommended for high index lenses to reduce glare caused by the higher reflectivity of the material.

Are 1.74 high index lenses durable? 

1.74 lenses are made from impact-resistant plastic and are quite durable for everyday use. However, like all high index lenses, they benefit greatly from a quality scratch-resistant coating since the base material can be more susceptible to surface scratches than standard lenses without a protective coating.

How much do 1.74 high index lenses cost?

1.74 high index lenses are a premium lens option and are priced higher than standard or mid-index lenses due to the advanced materials and manufacturing involved. However, for those with strong prescriptions, the improvement in lens thickness, weight, and appearance makes them well worth the investment.

What prescription range works best with 1.74 high index lenses?

1.74 high index lenses deliver the most noticeable benefit for prescriptions of -6.00 or stronger (myopia) and +4.00 or stronger (hyperopia). For lower prescriptions, a 1.60 or 1.67 index lens may provide a similar result at a lower cost. Our team can help you determine the best index for your specific prescription.

What is the difference between plastic and polycarbonate lenses?

What is the Abbe value of 1.74 lenses and does it affect my vision?

The Abbe value of 1.74 high index lenses is approximately 33, which is lower than standard lenses (Abbe ~59). A lower Abbe value can cause slight chromatic aberration — a subtle color fringing at the edges of your vision — particularly in low light. Most wearers do not notice this in everyday use, but those with very sensitive vision may want to discuss this with their eye care professional..

What is the difference between polycarbonate and Trivex lenses?

Polycarbonate and Trivex lenses are both lightweight and impact resistant. Trivex lenses are often chosen for sharper optical clarity and rimless frames, while polycarbonate lenses are a popular choice for sports glasses, safety glasses, and children’s eyewear. BOTTOM LINE - Trivex is the best overall lens we offer.

How should I care for my 1.74 high index lenses?

To keep your 1.74 lenses in top condition, always use a microfiber cloth and lens-safe cleaning solution — avoid paper towels or clothing which can scratch the surface. Store your glasses in a protective case when not in use, and avoid leaving them in extreme heat (such as a hot car) as high index materials can be more sensitive to temperature than standard lenses.

What are high-index lenses?

High-index lenses are thinner than standard plastic lenses. They are often recommended for stronger prescriptions because they can reduce lens thickness and make glasses look slimmer and feel more comfortable.