The verdict
A light-sensitivity tint. It blocks 94% of body-clock light, but 23 lenses block more, and under a warm 2700K bulb about 9% still gets through.
It takes the edge off evening light, but on its own it is not enough for sleep under bright lighting.
Sleep strength
Moderate
94% melanopic blocked
#24 of 61 lenses
Clarity
Very dark
17% of visible light passes
#56 of 61 lenses
Tint
Strong green
No sharp cut-off
Colors shift slightly warm
Red + near-IR
Partly blocks
34% of 600 to 950 nm
Long wavelengths get through
Under your lights
Pick a light to see what the lens lets through.
How the world looks through it
Drag the handle. Left of the line is through the lens.
With lensWithoutSimulated from the lens's measured color. A lens that blocks blue and green darkens cool colors and keeps warm ones.
Where it ranks
All 61 lenses. Up blocks more body-clock light, right is clearer. The best tradeoffs sit on the green line. Tap any dot.
Beat it on both
Block more and look clearer.
Zenov Health LUNAR95% · 51% · $146BlockBlueLight SunDown96% · 49% · $90EMR-TEK Orange96% · 49% · $120Swanwick Sleep95% · 47% · $130