Why isn’t dark mode better for your eyes?

Why isn’t dark mode better for your eyes?

Why isn’t dark mode better for your eyes?

Contrary to popular belief, dark mode is no better for the eyes than light mode, quite the opposite.

For several years now, dark mode has become essential on smartphones and tablets. Cheaper for the battery, better for the environment, the black background (not to be confused with the night mode and its yellow filter) would also protect our eyes from too much blue light, offering a more comfortable reading and better readability, above all. in the dark.

Meanwhile, the clear mode did not arrive by chance on our computers. At the time, the commercialization of the first consumer computers was a challenge for the industry, which was trying to create the smoothest experience possible, bringing its aesthetic closer to what everyone knows: paper. Today habits have made their way and the dark mode isn’t just for developers anymore. On applications, browsers, or even video platforms, the option has become largely democratized. While its impact on our battery is undeniable on an OLED screen, it’s still far from unanimous.

It is best read in black and white

Contrary to what one might think, dark mode is no better for our eyes. The explanation comes primarily from the fact that our body is made to live in daylight. We perceive dark shapes on a light background much more easily. In a darker environment, our pupils dilate, so it has a harder time concentrating. A problem that can also be linked to visual aberrations: looking at a street lamp in the middle of the night, our eye is confronted with phenomena of “luminous halos“, Which distort the light. It is the same thing on a document written in white on black: the text represents a source of direct light, which will arrive interfere with general readability with this dispersion effect.

To stay focused on a text, our eye will tend to tire more in dark mode. If you want to be more productive, light mode remains the best option. Good news, however, according to studies conducted on the subject, dark mode would have no significant influence on the health of your eyes. Only the read fatigue and speed would be affected.

Especially since the dark mode does not only have drawbacks: beyond the question of taste, it also allows you to consume up to 40% less battery for compared to the light mode, which is far from negligible. In the evening it also helps to avoid the profusion of blue light which blocks the secretion of melatonin and prevents falling asleep. In short, it will be better to adapt its use to the time of day, and to its productivity goal.

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