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Does The Dark State Really Protect The Eyes?

Does The Dark State Really Protect The Eyes?

The Dark Mode, Which Changes The Standard White Background To Black And White, Has Recently Become One Of The Companies’ Options For Adhering To Health Principles.

A dark state, such as a canopy or sunglasses, can slightly reduce the disadvantages of a mobile phone screen on people’s eyes. In fact, using the dark mode is an ideal option for programmers.

But dark mode, one of the changes in democracy, is now available in Android phones and Apple’s Mojave operating system and hosting applications such as Microsoft Outlook, Safari, Reddit, YouTube, and Gmail.

Many users complained about the dark state of YouTube that in early 2019, the company introduced a mode called ‘Lights out, which is actually an all-dark mode.

Researchers have now concluded that the dark state is, in fact, only an aesthetic dimension. According to a Twitter user, “Night mode is about 1,000 times more addictive than normal mode,” indicating the Internet’s reaction to the dark mode.

Spotify, which has now chosen a dark background as the standard model for its platform, has come to this conclusion after much experimentation and user feedback; This means that the vast majority of users of this platform were aesthetically pleasing to the dark background.

Michelle Kadir, director of product development at Spotify, described the issue as follows:

We believe that when you have music or art that is very attractive and captivating, an art cover can definitely display the internal contents of your product more clearly.

But beyond all this, the all-encompassing development of the dark state has led to dubious claims, including a reduction in eye pressure and an increase in device battery life. The question now is whether the average number of computer users decide to use this mode only to reduce eye damage? This section will make some of the most prominent claims about the dark state and the degree of stability.

Dark mode helps reduce eye pressure.

Over the last few decades alone, screens have expanded at an alarming rate. You are now engaged with the screen at home and work. One of the most common concerns about the Internet is eye health. But the advantage of using the dark mode is not that people are not completely negatively affected.

A 2018 study of digital device-induced eye strain (DES) published in a British medical journal noted that the prevalence might be as high as 50% among computer users. Be more.

Does The Dark State Really Protect The Eyes?

This is basically caused by blinking more than usual when viewing the screen. The standard for blinking is 15 eyelids per minute, which decreases by 3.6% when viewed on a monitor or phone, and this factor causes dry eyes. Symptoms associated with DES can include headaches and blurred vision, according to the American Society of Optometry.

It is no surprise, then, that anything that offers a solution to this problem will definitely be considered a healing miracle. This is one of the repeated claims about the dark state; it plays the same role as the healing miracle, but is this true? Anna Cox, a professor of human-computer interaction at UCL, protests:

There is no strong evidence that white text with a black background can reduce eye strain.

However, trying to view a screen can have different effects depending on your surroundings. In a dimly lit environment, where the main light source is your device’s screen, the eye pressure created by a light source increases with each passing moment.

Aneesha Singh, another professor of human-computer interaction at UCL, says:

In a dark room, the dark colors of the dark state make people less tired and spend more time using their device.

Conversely, a dark screen will make you less inclined to use your device in a bright environment because the text on the screen will be less visible. If you’re really worried about eye strain or dry eye, it might be best to invest in artificial devices or a matte screen.

Regarding the performance of our device, we recommend that you increase the contrast of your device screen so that by adjusting the brightness, your device screen will not be brighter or darker than the ambient light.

You may also need to check the light sources around you; Radiation from the top of the screen may make it harder to reflect light. Adjust the brightness of your device below the level of your eye. If you adjust the device’s screen brightness above the power of your eyes, it will cause dry eyes.


But now, the best possible solution is to take your eyes off the screen. Limiting the brightness of the screen is the best way to reduce eye damage. Also, the best rule for preventing eye injuries is the 20-20-20 rule; Every 20 minutes, look at an object at a distance of 20 meters for 20 seconds.

Dark mode makes texts more readable.

According to Cox, ensuring a higher contrast between the text and the background image is more important than the color scheme. If the contrast between normal and dark is the same, it would be pointless to expect a change in the readability of the text. However, many smartphone users are familiar with having black text on a white background and some changes.

It is unusual in the color of the text and wallpaper and is a marginal subject. In a way, the dark state is an innovation that people have just become acquainted with.

Research published in 2013 by psychologists Cosima Piepenbrock and Susanne Mayr showed that the accuracy and performance of people in the state of positive polarity are much better (i.e., placing the shadow text on a white background).

During the study, participants performed both visual tests and their stability at the time of reading.

In this case, participants could read the texts much faster but made more mistakes when reading them.

Researchers have shown that scanning and examining the text increases and increase its guess when we look at a clear background. When viewing a black background, the opposite effect occurs, and participants can not easily focus on the text. Mayr’s research found that all cases in the elderly population may be reversed.

But in general, it can be concluded that when people activate this mode on their device, they spend more time using their phone or laptop, and the reason is the reduction in the readability of texts.

This effect is true even for people with astigmatism; People with pupillary astigmatism do not have a spherical eye, which affects about 50% of the world’s population. Therefore, people whose eyes are sensitive to light (with photophobia or keratoconus) and who suffer from vision problems prefer to use the dark state in their devices.

Dark mode increases the battery life of the device

Another claim about using dark mode in smartphones is that it saves battery power. In this regard, we must say that this mode depends on the type of your screen. For OLED (organic light-emitting diode) displays, the dark mode does not affect battery consumption.


In OLED displays, each pixel lights up individually, meaning that it is turned off when the pixel turns black. The dark mode is an advantage for older LCDs because they have a backlight, which means that the pixels are bright even when displayed in black.

Until recently, most smartphones were made with LCD screens. The iPhone X was the first Apple phone to launch with an OLED display. Other phones with OLED screens include the Samsung Galaxy S10 and the Huawei Mate 30.

These phones have the ability to save battery power. According to iFixit, Android users have a 63% reduction in their device’s battery consumption when using the dark mode in Google Maps.

Dark mode increases the screen concentration and reduces distraction

Dark mode has been linked to claims about the ability of users to focus: Apple has released the dark mode of the Mojave operating system under the slogan “a distracting work environment.” But is there any reason to believe that dark mode increases screen density?

Singh says in this regard:

In any case, it has been proven that brighter backgrounds are better for focusing on people’s performance

Cox also denied the allegation of an increase in screen concentration, saying there was no mechanism for this. The nature of distraction comes from two sources: external sources; Your phone rings or someone calls your name, and the other source is internal; Your brain will spontaneously focus on the wrong things for a long time. Cox believes in this regard:

Unfortunately, external distractions do not go away just by changing the background color, and internal distractions do not go away by looking at a dark background.

However, there may be more reasons to believe that the dark state increases people’s concentration. Screen flicker, which is caused by the speed at which the computer screen renews, has been shown to affect screen concentration. Nilli Lavie, a UCL professor of psychology specializing in the neural mechanisms of concentration, distraction, and visual cognition, has studied screen flicker in a research series. Lavie says in this regard:

We have found that the brain can respond to disturbances in the environment, even if one is not aware of it.

Lavie suggests that a pure black background can prevent bias, so this static unconscious source is eliminated in this way. According to the researcher, the dark state has always been used in research.

Their experiments have shown that if the user uses a white background for one to two hours, it will cause them to get tired of viewing the screen, but this will not happen on a black background. The concern is that the white background, in turn, creates some interference and can reduce the interference of other animators.

Does The Dark State Really Protect The Eyes?


Meanwhile, Twitter has reached the point that users spend more time on the program after activating this mode. But if we want to summarize, we have to say that the dark state causes people to spend more time on their devices.

The dark mode is better for sleep.

At the moment, you are probably facing the number one enemy (screen); a Bright screen light. This layer comprises a color spectrum that wakes up the brain’s sleep-stimulating device and makes nighttime sleep more difficult. According to extensive studies conducted in 2018, bright light is involved in the destruction of ocular macules. Still, it is worth noting that according to research conducted by the American Academy of Ophthalmology, these cases are more effective on the skin.

Singh says in this regard:

IPad monitors and LED screens produce a blue-white light that multiplies melatonin secretion, thereby affecting a person’s circadian rhythm. This issue needs further investigation, although it is one of the most common claims about the effects of the dark state.

The dark mode generally reduces the amount of dark light emitted from the screens, but this shifts the night mode (Night Mode) to replace the blue light emitted from the screen with the orange light, releasing melatonin to sleep. Provided by the user. With all these interpretations, it is necessary to limit the use of devices to one to two hours before bedtime, of course, if you value your health.