Almost all smartphones today are equipped with dark mode settings or dark mode.
This setting will make the color of the phone screen darker and very different from the display in normal mode, especially the lighting.
Usually, dark mode gives the appearance of a black or gray background with white text.
The advantages of activating this dark mode are that it reduces eye strain when looking at the screen, is more energy efficient and makes the battery last longer, and the blue light emitted by the smartphone will be less.
As for the shortcomings, among others, it makes the text difficult to read when in a bright place and the pupils will dilate so that visual acuity decreases.
Meanwhile, reported by Forbes, research on the use of dark mode shows cellphone batteries can last longer, but this only applies to phones with OLED screens or organic light-emitting diodes. Inside the organic diode there is a thin layer that can emit its own light.
On OLED screens, pixels will turn off if the screen displays black. That way, when the user activates dark mode, most of the pixels on the screen will turn off so that it saves battery life.
Although it is considered to provide comfort to the user's eyes, it turns out that not everyone feels comfortable using the dark mode. Research shows that dark mode is not suitable for those who need to read quickly, proofread writing, or have cylinder eyes.
Research from the University of British Columbia shows that dark mode is quite difficult for people who have astigmatism or cylinder eyes.
It is said that people with cylinder eyes usually have difficulty detecting straight lines, have difficulty distinguishing colors, blurred vision, or eyes that are sensitive to light.