blue-light-glasses
Classic Night Swannies
Swanwick is the brand that popularized blue blockers for sleep. Their orange 'Swannies' are effective at blocking blue light and are a reliable, well-reviewed entry point for those new to circadian optimization.
Quality & Materials
Lenses are generally made of BPA-free acetate or polycarbonate. While durable, they lack the high-end optical pigments found in Gold-tier products.
Evidence & Testing
They have conducted independent studies on sleep quality improvements using their glasses, though they are less focused on the 'green light' research than top-tier brands.
Brand Transparency
Moderate transparency; they discuss blue light blocking but provide fewer detailed spectral graphs than Bon Charge.
Value Assessment
Very good value for a recognizable, high-quality brand with a strong track record and excellent customer support.
Why Not Alternatives?
While effective, Swanwick is less transparent about their specific green-light (500-550nm) blocking capabilities compared to Ra Optics or BlockBlueLight, and they often use polycarbonate lenses which have lower optical clarity than CR-39.
Sources & References
More in Circadian & Light
Ra Optics
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.
Bon Charge
Sleep Blue Light Blocking Glasses
Bon Charge (formerly BluBlox) offers laboratory-tested lenses that block 100% of the blue and green light spectrum from 400nm to 550nm. Their frames are exceptionally high quality, and they offer prescription, reading, and non-prescription options.
BlockBlueLight
NightLens Blue Light Blocking Glasses
BlockBlueLight offers the best balance of clinical-grade spectrum accuracy and affordability. Their NightLens is specifically designed to block 100% of blue and green light up to 550nm, backed by accessible spectral analysis reports.
Mito Red Light
MitoPRO 300
The MitoPRO 300 is the industry benchmark for mid-sized panels, offering a quad-wavelength output (630nm, 660nm, 830nm, 850nm) that targets both surface skin and deep tissue. It features a flicker-free driver and very low EMF at treatment distances, making it ideal for circadian rhythm entrainment and recovery.