SleepBlocks below 568 nm

DefenderShield

Orange 99%

Amazon

The verdict

A moderate evening lens. It blocks 94% of body-clock light, but 25 lenses block more, and under a warm 2700K bulb about 11% still gets through.

It takes the edge off evening light, but on its own it is not enough for sleep under bright lighting.

Measured Sep 22, 2026 · 350 to 950 nm · how I test

Sleep strength

Moderate

94% melanopic blocked

#26 of 61 lenses

Clarity

Medium

44% of visible light passes

#37 of 61 lenses

Tint

Deep orange

Blocks below 568 nm

Colors look warm and muted

Red + near-IR

Passes

92% of 600 to 950 nm

Long wavelengths get through

Under your lights

Pick a light to see what the lens lets through.

44%of visible light gets through, cutting in at 568 nm
400 nm500 nm600 nm700 nm800 nm900 nmUVNear-infrared
What gets through the lens

How the world looks through it

Drag the handle. Left of the line is through the lens.

A woman draws colorful digital art on a graphics tablet at a wooden desk in a bright, modern office with bookshelves and other people working in the background.With lensWithout
WithoutWith lens
White page
Skin
Sky
Phone screen
Leaves
Red
Wood
Night sky

Simulated 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.

99.7%99%95%90%50%0%0%20%40%60%80%100%Clarity (VLT) →Melanopic blocked →This lens

Selected

DefenderShield Orange 99%

94% blocked · 44% clarity · $47

DefenderShield sells this lens in

Standard framesFits over glassesClip-onKids sizesMagnetic clip-onAcetatePlasticStainless steelTR90 nylonAnti-reflectiveSmudge resistantShips worldwide