As the Remote Workforce is now taking a permanent fixture here in the United States, there is one thing that is certain:  We are now more than glued to our screens, whether it is on our computer or wireless devices.  Because of this, there has been increasing concern amongst the medical community about prolonged eye strain, and what can be done to reduce it.

One such way is to use the “Dark Mode” on your device, and this is further explored in this article.

What Exactly Is It?

This is simply when you can switch over the functionality on your wireless device to display white text cast upon a dark background.  Once you make this switch, it affects all of the applications on your device, all the way from your web browser to all of the mobile apps that you use.  The main objective of Dark Mode is to reduce the amount of blue light that you are being exposed to on your screen, so that you will not suffer as much from eye strain.

What Are The Effects From Blue Light?

Scientific research has shown that blue light emitted from an electronic screen produces more energy than other bands of light on the color spectrum.  Because of this, this triggers a signal to our brain that it is still daytime, and that it is OK to even continue working even after hours.  But, there have been reports that by switching to a Dark Mode a couple of hours before going to bed can actually help people not only fall asleep faster, but they stay asleep for longer periods of time.

Further, it has even been hypothesized that constantly using blue light, even during the night hours, can greatly throw off the circadian rhythm of the body, thus making it even harder to get a good night’s sleep.  The reason for this is because the release of melatonin is suppressed, which is a natural chemical in the body that tells your system it is time to sleep.

Of course, there are those people who have to take their wireless with them to bed, and by switching to a Dark Mode, it makes a lot easier to read the text on your smartphone, because you do not have to squint nearly as much.

But there are also pieces of scientific research which have shown that the effect of Dark Mode has no effect in the end.  One such study was conducted by Apple in 2019, with their iPad device.  It was discovered that using Dark Mode or Light Mode (which is the opposite of the former) had no effect upon the production of melatonin.

Also, in 2017, a research project was conducted to examine the effects of using either Dark Mode or Light Mode when playing online games before going to bed.  Again, the results were inconclusive, but it proved playing games just before going to bed made people stay awake longer, because of the stimulation of the brain cells.

The Advantages & Disadvantages of Using Dark Mode

Here they are:

The Advantages

  1. Eye strain is greatly reduced:
    The dark interface that is provided when using the Dark Mode can make it much easier to read the text on the application that you are using, especially if you have the lights turned off.
  2. The amount of blue light exposure is reduced:
    This can lead to greatly reduced levels of eye strain and may even aid in getting to sleep quicker.
  3. Battery efficiency is optimized:
    By using the Dark Mode, you are actually increasing the amount of lifetime of the battery in your wireless device, since using lesser amounts of screen intensities, in terms of different light sources.

The Disadvantages

  1. Eye fatigue may increase:
    This may occur if the content appears to look “washed out”.  But this typically occurs in people that have other eye related issues as well.
  2. It is not meant to be used in well lit areas:
    The intention of Dark Mode is to use it in places where there is virtually no light (hence its name).  It is not designed to work in places where there is abundant sources of light and sunshine.
  3. Battery power will not be conserved in older models:
    As mentioned earlier, using Dark Mode can help increase the battery life of your wireless device.  But this is only true of newer models, not the older ones.  In fact, it will consume far more battery life of the latter.


To enable the Dark Mode on your iPhone 13 device, follow these steps as illustrated below:

(SOURCE: 1).

To enable the Dark Mode on your Android device, follow these steps as illustrated below:

(SOURCE: 2).

In the end, to determine if Dark Mode is best for you, experiment with it for a few nights, then rotate to a Light Mode.  Keep in mind that the effect of Dark Mode varies greatly upon people, so you may experience an effect or none at all.  If you have any questions about this, contact us today.