Sunset Lenses (Clyde Frame)
Ra Optics is the industry leader in precision optics for circadian health, utilizing proprietary pigments that provide a sharp 550nm cutoff. Unlike most competitors, they use high-quality CR-39 plastic lenses which offer superior optical clarity compared to cheap polycarbonate.
Ingredients & Purity
Uses CR-39 ophthalmic-grade resin for maximum clarity and durability. The lenses are infused with proprietary pigments rather than a simple surface coating.
Scientific Evidence
Developed in consultation with leading photobiology experts. They provide clear transmission spectrum graphs showing a 100% block of light below 550nm.
Brand Transparency
Fully transparent about their manufacturing in world-class optical labs and their specific 'cutoff' wavelengths.
Value Assessment
High price point ($150+), but justified by the optical quality and the precision of the light filtration which is rarely matched.
Why Not Alternatives?
Most 'blue blockers' only filter up to 450nm; Ra Optics specifically targets the 450-550nm range (blue and green light) which research shows is critical for melatonin suppression. Cheap Amazon brands often use a surface coating that peels, whereas Ra Optics infuses the tech into the lens.