Yötila - Suojaa silmiäsi

Vähennä sinisen valon heijastuksia lämpimällä näytön sävytyksellä

Blue-rich light—wavelengths roughly between 400 and 500 nanometres—helps cue daylight alertness, but our screens blast that spectrum long after sunset. A browser extension that filters or tints pages to reduce blue output sounds like a cosmetic tweak; in reality, it delivers a cascade of cognitive, physiological and productivity gains. Below are the most important benefits, backed by research and everyday experience. 1 ▪ More Restorative Sleep Dozens of peer-reviewed studies show evening blue light suppresses melatonin, the hormone that signals “time to wind down.” Even a 30-minute scroll on news or social media can delay melatonin release by an hour. By adding a warm overlay (often amber or soft red), a blue-blocker extension cuts the disruptive wavelengths at the source. Users report falling asleep faster and waking up fewer times, because their internal clocks are no longer tricked into thinking 11 p.m. is midday. 2 ▪ Reduced Digital Eye Strain Focusing on high-contrast pixels for hours dries the cornea and fatigues the ciliary muscles that adjust focus. Blue light scatters more than longer wavelengths, creating additional “visual noise” that forces those muscles to work harder. A browser filter replaces harsh highs with mellow mid-spectrum tones, lowering scatter and letting your eyes maintain focus with less effort. The result: fewer headaches, less gritty “sand in the eyes” sensation, and diminished need for artificial tears during marathon work sessions. 3 ▪ Improved Long-Term Eye Health Laboratory evidence links sustained high-energy visible (HEV) exposure to oxidative stress in retinal cells—one suspected contributor to age-related macular degeneration. While the jury is still out on small-screen doses, reducing unnecessary blue peaks is a prudent, zero-cost precaution. A browser extension is the easiest control knob: unlike hardware filters, you enable or disable it instantly, dial opacity to your comfort level, and limit its effect to websites rather than the entire monitor. 4 ▪ Sustained Focus and Productivity Bright, high-contrast web pages can feel stimulating at first but quickly tire the visual cortex, leading to micro-breaks that manifest as tab-hopping. By softening glare, a blue-light blocker lowers overall arousal to a “calm-alert” state. Anecdotal reports and small workplace studies show users stay in deep-work mode longer, with fewer impulsive switches to messaging or social feeds. Because most extensions remember settings per domain, you can leave coding platforms or document editors slightly amber while keeping design-critical tabs true-colour.