Eye strain &
flicker

Research-backed insights on blue light, screen flicker, and circadian health.

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How to Reduce Eye Strain on Mac: 7 Settings to Change (2026)
Dimming a Mac screen can increase invisible flicker, and Night Shift stops at a warm white. Seven settings that change how your screen is lit and colored.

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Eye strain & flicker

Computer Vision Syndrome on a Mac: What the Research Says

Computer vision syndrome is mostly about blinking, focus and dry eye, not your screen's color. What the research says about causes, remedies and your Mac.

8 min read

Eye strain & flicker

PWM Monitor Flicker: Why Your Screen Hurts (And How to Fix It)

Monitors dim by strobing the backlight thousands of times a second. Most people never see it and some get headaches. How to test for PWM and stop it.

14 min read

Eye strain & flicker

Best Screen Dimmer Apps for Mac in 2026: 6 Tools Compared

Need your Mac dimmer than the minimum brightness allows? Six Mac dimmer apps compared on eye comfort and how far each one actually goes down.

12 min read

Eye strain & flicker

How to Reduce Eye Strain on Mac: 7 Settings to Change (2026)

Dimming a Mac screen can increase invisible flicker, and Night Shift stops at a warm white. Seven settings that change how your screen is lit and colored.

12 min read

Eye strain & flicker

Best Mac Display Health App 2026: Complete Guide

Mac display health comes down to four things: blue light, PWM flicker, temporal dithering and scheduling. Every app compared against all four of them.

11 min read

Eye strain & flicker

Display Dithering on Mac: The Hidden Flicker Source Your Blue Light App Won't Fix

Every Apple Silicon Mac flickers at the pixel level through temporal dithering. It is not PWM, most people never see it, and some Mac apps can turn it off.

10 min read

Eye strain & flicker

Flicker-Free Mode for Mac: How Sundown Dims Through Gamma Instead of the Backlight

Some MacBooks dim by strobing the backlight on and off. Flicker-free mode holds the backlight at full power and dims through the gamma table instead.

11 min read

Eye strain & flicker

Fix Screen Flicker Headaches on MacBook (2026 Guide)

MacBook flicker comes from two invisible sources: PWM backlight dimming and Apple Silicon temporal dithering. How to tell which, and fix it.

14 min read