Best overall · Blue light glasses
Swanwick Sleep Swannies Classic
Deep amber evening glasses with a published Colts Labs transmission curve and independent melanopic data. Prescription lenses, including progressives.
Specs
| Lens tint | Deep amber |
|---|---|
| Published blocking | 99.5%+ to 500 nm, 90% at 530 nm |
| Melanopic cut (independent lab) | About 95% (mDFD 1.34) |
| Over glasses | Separate Fitover model |
| Prescription | Yes, incl. progressive |
| Light let through | About 50% (independent lab) |
| Lens material | CR-39, anti-reflective |
| Frame | Cellulose acetate, spring hinges |
| Sizes | Small, Regular, Large |
| Returns | 30 days (not prescription) |
Specs from the manufacturer and the sources listed below. Last verified Oct 20, 2026.
Good
- Independent data: Night Swannies cut melanopic light by about 95% (mDFD 1.34) in a 2025 peer-reviewed analysis
- Full Colts Laboratories report published: under 0.5% transmission from 280 to 500 nm
- Prescription lenses in single vision or progressive, plus a dedicated Fitover model
- Looks like ordinary acetate glasses and comes in three sizes
Not so good
- $130 for a lens that filters about as well as a $16 Uvex Skyper
- Passes 23% at 540 nm and 40% at 550 nm, so Swanwick's '400 to 550 nm' claim overstates green blocking
- Prescription lenses take about 4 weeks and are non-refundable
- Front-only frame lets in more side light than a wraparound
- Several size and case options, including Regular, were out of stock when checked
Among premium evening glasses, Sleep Swannies are the only pair here with both a full third-party transmission report and an independent, peer-reviewed measurement. Swanwick publishes a January 2021 Colts Laboratories report for its Sleep lens: transmission stays under 0.5% from 280 to 500 nm, rises to about 10% at 530 nm and reaches 40% at 550 nm. In a 2025 analysis of 26 commercial glasses, Night Swannies cut melanopic light from a daylight-type source by about 95% (mDFD 1.34) while passing about half of visible light. That is nearly identical to the Uvex SCT-Orange.
So this is a strong amber blocker, not a full green blocker. Swanwick’s science page says the lens blocks 99% from 400 to 550 nm, but its own lab report shows 99% blocking only up to about 505 nm. If you want more green cut, the red-orange lenses from Bon Charge and Ra Optics go further, with a darker view and no independent data.
The extra money buys the frame and the options. The acetate Classic comes in Small, Regular and Large. Prescription Swannies start at $69.99 for the frame plus lenses, in single vision or progressive, and the same Sleep lens comes in a Fitover that goes over your own glasses. Prescription orders take about four weeks and can’t be refunded. Non-prescription pairs carry a 30-day money-back guarantee.
If you don’t need prescription lenses and don’t mind the look of safety glasses, the Uvex Skyper filters as well for a fraction of the price.
Sources
- Swanwick: Sleep Swannies Classic Black product page
- Colts Laboratories spectral analysis of the Swanwick Sleep lens (January 2021)
- Glickman et al. 2025, Translational Vision Science & Technology: melanopic filtering of 26 commercial glasses
- Swanwick: the science behind Swannies (400 to 550 nm claim)
- Swanwick: prescription Swannies
Alternatives
- Best budgetUvex Skyper SCT-Orange (S1933X)$16
- Best fit-overSwanwick Sleep Swannies Fitover$160
- EMR-TEK NYX Blue Light Blocking Glasses$100
- Best red lensBon Charge Morris Blue Light Blocking Glasses$130