Uploaded March 2016 | Updated September 2026, 19 hours ago

---

framesdirect.com/knowledge-center/lens-materials

High-index 1.67 lenses are 45% thinner than plastic lenses and they’re recommended for glasses wearers with prescriptions up to +/- 9.00. This lens material helps reduce the distortion others may see when looking at your eyes through your glasses.

Benefits of High-Index 1.67 lenses:
- Their slim profile allows you to choose from a wider selection of frames
- Light weight for added comfort
- Flatter surface, so your lenses bulge less from the frame and your eyes appear more natural in size=
- High-index 1.67 lenses can be used for both single vision and progressive prescriptions

Our High-Index 1.67 lenses include polished edges as well as scratch-resistant and UV-protection (framesdirect.com/knowledge-center/uv-coating) coatings. Choose from additional options like Transitions® (framesdirect.com/knowledge-center/transitions-lenses-dp) and A/R coatings (framesdirect.com/knowledge-center/anti-reflective-coating) to achieve the ideal lens for your needs.

Check out our Optional Lens Coating Guide here:
framesdirect.com/knowledge-center/lens-add-ons