Maximum scratch protection
Advanced anti-reflective coating
Sustainable Bio-Polyamide lenses
Lower carbon emission profile
Photochromatic lens technology
Premier Japanese polarisation
Total UV protection
Certified safety standards

Unrivalled clarity and durability
The Diamond‑Bio collection represents the height of optical innovation, utilising industry-leading Japanese Polarisation, bespoke Anti-Reflective coatings to neutralise glare, and an exceptionally tough outer hardcoat for scratch prevention. Advantageous for the planet and your sunglasses alike.
Bio-sourced materials
Sustainable production techniques
Our Diamond-Bio range incorporates an advanced manufacturing technique using 44% bio-content derived from renewable castor oil. This process reduces the carbon footprint of each lens by up to 50% when compared with standard fossil-based production methods.
Anti-reflective lens coatings
Our made-to-order anti-reflective (AR) coatings for Diamond-Bio lenses combat reflections from both light sources and internal bounce-back, allowing 99% light transmission for superior visual acuity. This advanced multi-layer tech creates destructive interference to cancel out glare, easing eye strain in bright light.


Photochromatic adaptive technology
Light conditions differ between locations, so our photo-chromatic lenses automatically adjust their colour depth based on UV exposure. They lighten in overcast conditions and darken in direct sun, providing full UV protection and maximum convenience.
Ultra-tough scratch protection
All lenses from The Sunglass Fix feature a hardcoat for robust scratch resistance. Diamond-Bio lenses take this to a professional standard with an ultra-tough hardcoat layer on bio-polyamide, ensuring resilience while remaining lightweight with glass-like clarity.

Key features of Sunglass Fix lenses
Premier polarisation
Our polarised lenses utilise world-leading Japanese film (boasting 99.9% efficacy) to significantly reduce glare from wet roads, water, and glass.
Total UV protection
Our lenses block 100% of harmful UVA and UVB radiation up to 400nm, ensuring complete eye safety without darkening your vision.
Global safety standards
Lenses from The Sunglass Fix meet the most stringent safety benchmarks internationally, including the AS/NZS 1067:2003 standard.
Breakage warranty for life
Our products are engineered for longevity. Should a lens ever break, our lifetime warranty provides a simple replacement, reducing environmental waste.
Diamond-Bio lens colour range

Burnt Umber

Burnt Umber Gradient

Burnt Umber Photochromatic

Black Onyx

Black Onyx Gradient

Black Onyx Photochromatic

G15

G15 Gradient

