Precision-engineered lenses built on sleep science — filtering what matters, so your body can rest.
Your body runs on light
Your circadian rhythm uses light to decide when you feel awake and when you feel tired. After sunset, the absence of blue light normally signals your body to start winding down and producing melatonin.
Screens and indoor lighting keep sending daytime signals long after dark. Research suggests this can delay your natural wind-down by hours. By filtering the relevant wavelengths, HEVO lenses are designed to let your body follow its own rhythm.
Engineered to work with your biology
HEVO's precision-tinted, polycarbonate lenses filter up to 99% of the blue and green wavelengths that research links to melatonin suppression and circadian disruption. Not a coating — a targeted optical filter built around the science of sleep.
So your body recognises night as night. And does what it's designed to do — wind down, recover, and rebuild.
Not all lenses
are the same
Most blue light glasses filter 20% and call it a day. HEVO filters up to 99%. See the difference — and feel it.
Your body was never designed for screens at midnight. For centuries, darkness meant rest — a signal so reliable your biology still depends on it. Modern life broke that signal. HEVO restores it. Not by changing your habits, but by changing the light that reaches your eyes. Put them on, and the overstimulation fades. The calm isn't forced — it's what your body does when you stop fighting it.