🌙 Dark Mode vs. Light Mode: which is better for your eyes? Science has an answer.
Nielsen Norman Group reviewed the academic literature and the results might surprise you:
👁️ For people with normal vision, light mode improves visual performance in most tasks. The reason: more light → pupil contracts → fewer spherical aberrations → better focus.
But there are important nuances:
- 😷 People with cataracts or cloudy ocular media may actually perform better with dark mode
- 🔭 Prolonged exposure to light mode may be associated with developing myopia
- ☀️ In bright ambient lighting conditions, the difference between modes nearly disappears
NN/g’s recommendation: don’t impose light mode without offering a dark mode option. Apps designed for long-form reading should always provide a dark mode toggle.
💡 Explanation in a nutshell#
Light mode works like a well-lit room: the pupil adapts and focuses precisely. Dark mode is like reading in dim light: the pupil dilates to capture more light, but that introduces optical distortions. However, if your eye lens is cloudy (as in cataracts), less light can actually be beneficial.
More information at the link 👇
