Screen light worsens migraines because of specific wavelengths your eyes are hypersensitive to. Nox filters those exact wavelengths — FL-41 clinical tint, 480nm notch filter, narrow-band green, and 7 more research-based presets. Like $200 therapeutic tint glasses, built into your Mac.
Features
Every feature designed around the neuroscience of photophobia and melanopsin sensitivity.
Filters specific wavelengths across the full visible spectrum, not just color temperature. Targets the exact light your eyes are most sensitive to.
See exactly how much migraine-triggering light your filter removes in real time. A live percentage that updates as you adjust settings.
FL-41 clinical tint, 480nm notch filter, narrow-band green (520–540nm), and more. Each preset maps to published migraine and photophobia research.
Configurable screen break timer based on the 20-20-20 guideline. Regular breaks from near-focus work help reduce digital eye strain symptoms.
Full control over RGB channels, gamma curve, contrast, color temperature (2700–6500K), and per-channel intensity. Save unlimited presets.
The Science
Not all light triggers migraines equally. Decades of neuroscience research points to specific wavelengths and specific cells.
Real-time percentage of melanopsin-activating light blocked by your current filter and intensity settings.
Your retina contains specialized light-sensing cells called ipRGCs that are most sensitive to blue-cyan light at 480nm. Harvard research shows these cells are hyperactive in migraine sufferers, sending amplified pain signals to the brain when exposed to certain wavelengths.
The same researchers found that narrow-band green light (~530nm) is the only color that doesn't worsen migraine. Blue, amber, and red all increase headache severity. This is why a simple "warm filter" isn't enough — you need wavelength-level precision.
FL-41 tinted lenses, a rose-colored clinical filter, reduced migraine frequency by 74% in trials. Nox brings these same filtering principles to your display, using spectral curve modeling to compute exact per-channel attenuation — the software equivalent of precision therapeutic tint glasses.
Comparison
f.lux and Night Shift shift color temperature. Nox filters specific wavelengths. Read the full comparison: Nox vs f.lux · Nox vs Night Shift
| f.lux | Night Shift | Iris | Nox | |
|---|---|---|---|---|
| Migraine-specific presets | — | — | — | 10 presets |
| FL-41 tint emulation | — | — | — | ✓ |
| 480nm notch filter | — | — | — | ✓ |
| Melanopsin suppression metric | — | — | — | Real-time % |
| Spectral curve modeling | — | — | — | 380–780nm |
| Narrow-band green mode | — | — | — | 520–540nm |
| Custom preset creation | — | — | Limited | Full RGB + gamma + temp |
| Price | Free | Free | $15 | $10 |
Presets
From aggressive melanopsin blocking to gentle screen warming. Each preset's parameters trace back to specific studies. Plus create your own.
Every preset is fully customizable. Adjust intensity, dimming, black point, contrast, gamma, color temperature, and per-channel levels — or create your own from scratch.
Pricing
No credit card required · Full features during trial
Nox applies filter profiles based on published research on light sensitivity. It is not a medical device and does not diagnose, treat, or cure any condition. Consult your physician regarding migraine management.
FAQ
The same spectral filtering principles used in $200+ therapeutic tint glasses — running natively on your Mac.