Key Benefits

• Boosts daytime energy and mood.

• Supports focus, clarity, and cognition.

• Enhances sleep depth and recovery.

• Filters harsh light to protect vision.

Start your day with balance and clarity with Nate BlueSync – circadian-enhancing eyewear that improves light exposure, sharpens focus, and supports long-term sleep quality. BlueSync lenses filter harmful light while enhancing the wavelengths your body needs to stay energised and alert, naturally stimulating your internal clock.

Each pair promotes increased daytime performance and evening relaxation, helping regulate energy, cognition, and mood throughout the day. Whether you’re navigating long work hours, jet lag, late nights, or unpredictable schedules, Nate BlueSync supports mental and physical wellbeing by aligning your natural rhythm.

Named after Nathaniel Kleitman, the father of modern sleep research, the Nate frame features square lenses with soft curves in a rich tortoise shell finish. A clear saddle bridge adds structure and elegance, while the wraparound shape offers all-day comfort and coverage. Designed to fit medium face shapes with ease.

BlueSync uses advanced photobiology to deliver targeted light therapy through its lenses. Designed in collaboration with a leading expert, it filters harmful UVA, UVB, and high-energy visible light to protect cells from damage, while allowing regenerative red and near-infrared light to pass through. It emphasises long-wavelength blue light—peaking at 480nm—which plays a key role in activating the circadian rhythm, the internal clock that drives energy, mood, focus, and physical performance. This selective transmission supports both biological protection and daytime stimulation in perfect balance. With BlueSync, you can gain improved focus, enhanced energy, and better sleep—all from a single pair of lenses.

Ra Optics was founded by Matt Maruca after his own health journey led him to uncover the effects of artificial light on circadian biology. His mission became clear: to create the world’s highest-quality blue-light-blocking eyewear, backed by peer-reviewed science and guided by ancestral principles. Crafted with proprietary lens technology, Ra Optics glasses are engineered to protect mitochondrial function, regulate melatonin production, and reduce the impact of screen-induced fatigue. It’s a deceptively simple tool, designed to restore one of the body’s most critical rhythms—light and darkness.

With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.

Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.

Ra Optic's lenses have been designed and developed with the world's leading experts on light-protective technology, and utilize the world’s most advanced, proprietary blue light-absorbing pigment technology.

Ra Optic's frames are designed with keen attention to detail and handcrafted using the world’s highest quality materials—Italian Acetate and German-Engineered Metal—into a variety of trending and timeless styles. There is a frame for everyone.

Wear BlueSync eyewear during daylight hours—especially in the morning and early afternoon—to support healthy energy levels, focus, and alertness. For best results, use consistently while working indoors, under artificial lighting, or during screen time.