The dark mode of the smartphone can be harmful

Be careful! The dark mode of the smartphone can be harmful

Dark mode has become a very popular trend in today's smartphones as well as apps and browsers. Not only world-famous apps like WhatsApp, Facebook, Messenger, Twitter, but also local apps like eService, Our Calendar have come in dark mode.

Not only this, in Android Ten, Google has also provided the option of system-wide dark mode. Dark mode looks good.

The scientific basis for using Dark Mode on smartphones and laptops is to reduce energy consumption rather than for eye comfort.

But smartphone makers have been claiming that Dark Mode will increase visibility, reduce eye strain, and make it easier to use the device in low light conditions. But this claim does not always apply to everyone.

Most people find that dark mode makes them more comfortable when they are dimmed. This does not mean that Dark Mode is useful at any time.

Naturally, the human eye can see better in daylight than at night. Our development is looking dark in the light. Whether it's the natural environment around us in the light of day or the letters written on paper.

So for our originality and good contrast, looking dark in light is better than other ways. So there is no reason to believe that light is good for everyone (especially for letters) in a dark background.

According to the American Optometric Association, a disease called astigmatism is on the rise. The Schaefer Eye Center estimates that the disease affects about 30 percent of people at various levels.

A condition of astigmatism is blurred vision. This can cause problems when one or both eyes are irregular in shape.

Astigmatism graphic showing the difference between normal and astigmatic eye

Which makes it difficult to read bright letters in a dark background. This is even mentioned in an article published in Gizmodo in 2014 by the University of British Columbia-based Censorship Perception and Interaction Research Group.

"People with astigmatism (about 50 percent of the population) find it harder to read white letters on a black background than on a white one," it said.

This is a problem caused by the level of light. On a bright display (white background) the iris closes slightly more and reduces the effect of the 'deform' lens. In a dark display, the iris is more open to receiving more light, and the deformation of the lens causes more blurring in the eye. '

So you may have a problem with astigmatism, which you may not be aware of. If you have it checked by an ophthalmologist, you can know for sure.

The black letter on a white background is suitable for reading. Because white reflects all the wavelengths of the visible spectrum. That is why the iris does not need to be very wide to receive a lot of light.

As the iris does not have to be wide when viewed on a white screen, it keeps the pupil narrow and requires you to focus a little on an object. When you see black letters on a white background, you can immediately focus on them.

But in dark mode, the pupil tends to be wider to allow more light to enter. So when you see a white letter on a black background, it feels like its edge is on the background.

This is called the halo effect. Which weakens the ease of reading. The eye is made up of muscles.

The more concentrated you try to read something, the worse it becomes. So if you don't feel comfortable reading flashing letters in dark mode, don't force it. Because it makes the eyes weaker.

Bright burn

Of course, you feel comfortable sleeping in a dark room. If someone suddenly opens the window curtain, a flood of sunlight enters the room. For a while, your eyes tend to blink.

You must have had such an experience. This is because your iris may not have managed the amount of light it needs.

If you look at something in dark mode for a long time (as if this time is only a few months), your eyes become accustomed to low light.

In this case, when you look at the bright screen, then you start feeling uncomfortable. If you are experiencing this type of problem then it is advisable to go back to the old habit of using a white screen.

In this case, it would be better to reduce the brightness of the screen instead of the dark mode.