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Screen health guides

Deep dives on PWM flicker, blue light, and display comfort. Written from the research, for people whose eyes notice the difference.

PWM Flicker, Eye Strain, and Headaches: What to Do

What pulse-width modulation flicker is, why it causes eye strain and headaches for some people, and how to reduce it.

OLED PWM Flicker and Eye Strain: Why Some Displays Hurt

Why OLED screens flicker at low brightness, which displays are worst, and what actually helps.

Laptop PWM Flicker: How to Check It and Reduce Eye Strain

How to test your laptop screen for PWM flicker and reduce its impact without replacing your hardware.

Blue Light Filter for Sleep: Does It Actually Help?

What the research says about blue light filtering and sleep quality, and how to set up your evenings.

PC Screen Dimmer Software for Mac and Windows

Dimming below your display's minimum brightness: how software dimmers work and when you need one.

7 Best Blue Light Filter Software in 2026

Ranked by circadian effectiveness: the tools that actually shift your evening light exposure, compared.

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