Please ensure Javascript is enabled for purposes of website accessibility High Index Glasses- Prescription Ultra Thin Lenses - Rx-Safety

Who Needs High-Index Glasses? High-index glasses are best suited for people with strong prescriptions of 5.00 diopters or higher. Standard lenses in this range are thick and heavy, which can cause visual distortion around the edges. High-index materials solve the problem by refracting light more efficiently. You can achieve the same level of correction with less material, which means lenses that are up to 50% thinner and lighter than standard plastic.

Advantages of High-Index Lenses

Upgrading to high-index lenses delivers several advantages beyond a more stylish appearance, including:

  • Thinner and lighter: Reduce the bulk and weight of your glasses for a more comfortable fit, which can be especially impactful for the pair you wear all day.
  • Sharper clarity: High-index materials deliver superior optical performance with less distortion, even in the strongest prescriptions.
  • Natural look: With less material, you can minimize the “magnification” and “minification” effects that can cause eyes to look unusually large or small in a standard pair of glasses.
  • More frame choices: Because they’re thinner, high-index lenses can fit more easily into modern, fashion-forward frames. You’ll have more options to choose from when compared to standard lenses in this range.
  • Better balance: Finally, lightweight lenses prevent imbalances that can cause glasses to slip or feel front-heavy, resulting in a more comfortable fit.

Note that high-index lenses naturally reflect more light than standard alternatives. This makes pairing them with anti-reflective coatings a smart move. Doing so can reduce glare and improve visibility in all lighting conditions. RX-Safety offers thin prescription high-index lenses for most vision types — including single vision, bifocal, progressive, and safety lenses — with lens coating options for added clarity and comfort.

Different Index Options Available

RX-Safety offers several index options to choose from, all tailor-made to match different prescription strengths and preferences. This includes:

  • 1.60 high-index lenses: Best for prescriptions ranging from 2.00 to 5.00, these lenses work well in most frame styles, including wraparound safety options.
  • 1.67 high-index lenses: Ideal for prescriptions ranging from 5.00 to 8.00, these are a popular, high-performance option in both fashion-forward and safety eyewear.
  • 1.74 ultra-high-index lenses: Recommended for powerful prescriptions above 8.00, these provide excellent clarity and minimal edge thickness in even the largest frames.

If you’re unsure which index is right for you, RX-Safety’s optical experts can help. Contact us today, or use our prescription entry tool at checkout to see recommendations tailored to your specific prescription glasses for high prescription needs.

Frequently Asked Questions

Anyone with a prescription of 5.00 or higher can benefit from high-index glasses. They use thinner material to reduce thickness and weight while providing superior visual coverage. This often results in improved comfort and performance for both daily and professional wear.

The index of a lens refers to how efficiently it bends light. The higher your index, the less material you need to achieve the same level of vision correction. This means increasing your index level can decrease the thickness of your lenses without sacrificing performance in the process.

High-index lenses make glasses thinner by bending light more effectively. They make even the strongest prescriptions look sleeker by using less curvature and reducing edge bulge in frames.

High-index lenses are thinner, lighter, and more stylish than standard lenses. They give you more frame options while improving comfort and clarity in diverse conditions. So, whether your current pair of glasses feels too thick, is too heavy, or has too much visual distortion around the edges, you may benefit from high-index lenses.

These numbers indicate the degree to which each lens bends light, with higher numbers indicating greater lens efficiency. For example, 1.60 high-index lenses are suitable for moderate prescriptions, while 1.67 high-index lenses are recommended for slightly stronger prescriptions, and 1.74 high-index lenses are suitable for very strong prescriptions.

Yes, high-index lenses generally cost more than standard lenses due to the advanced materials used in their manufacture. However, you’ll enjoy greater comfort, durability, and improved visual benefits in exchange for the added price. The difference is often small enough to justify the upgrade.

High-index lenses are compatible with most types of frames, including full-rim, semi-rimless, and safety glasses. For rimless styles, higher-strength index lenses, such as 1.67 and 1.74, tend to be the best options, as they help maintain structural integrity.

The primary drawback of high-index lenses is the potential for increased glare. That’s why many people who purchase them add anti-reflective coatings to their lenses.

Yes, high-index lenses have higher reflectivity, a problem that can be addressed with an anti-reflective coating. Adding a coating will improve your visual comfort while, in many cases, also enhancing the appearance of your glasses.

Yes, RX-Safety specializes in prescription safety glasses and sunglasses with high-index lenses. This makes it easy to find the ideal high-index option, regardless of your eyewear goals.

Category Highlights

High Index Lens Options

RX-Safety offers 1.60, 1.67, and 1.74 high-index lenses. Our varied selection makes it easy to find a more lightweight, high-performance lens tailored to your prescription needs. Every option strikes a balance between comfort, durability, and cost to deliver affordable, lasting performance.

Learn More

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