Mobile blue light, apps that promise to block the mobile blue light

As you just read: the filters that, supposedly, block the blue light of the mobile are useless at all. And I don’t say it, he says it Optics department of the University of Granada (UGR), which carried out an experiment that consisted of a series of readings in front of the screen by a group of people, sometimes applying a filter for blue light and other times reading without any type of filter. This in order to know if said filter really has a positive effect on the eyes or not.

There are a host of apps on the market that have long promised to solve problems like vision loss, fatigue, redness, irritation, or blurred vision through use.

It is also known that many of these applications promise to improve the quality of sleep precisely by blocking the amount of blue light that hits your eyes while using your devices.

It should be noted that there is one thing certain in all this and that is thatthe blue light produced by the mobile can affect the quality of your sleep We already explained this in a previous article, but said blue light is not actually being blocked by any of the applications that promise to do so.

The truth, behind this type of applications is a great marketing and advertising strategy, but there is very little scientific evidence in this regard, not to say that there is no scientific evidence.

Until now we had not had any serious scientific study on the issue of mobile blue light

Nevertheless, the recent study is not very encouraging to anyone; not for the users of these applications, who hoped to be taking care of their visual health, nor for the owners and teams behind the applications who promised to protect the eyes of their users.

All subjects who were part of the study were affected with visual fatigueregardless of whether they used the filter or not.

If the work session in front of the mobile device was prolonged in all cases, visual fatigue was evident.

The results have been published in the journal Ophthalmic and Physiological Optics, as discussed in

The brain in charge of this study isBeatriz Redondo Cabrera, who has a Master’s Degree in Clinical Optometry and Advanced Optics from the University of Granada. In addition, it has the Expert Course in Pediatric Optometry and Visual Therapy of the European University of Madrid.

Work in front of screens and vision problems

There are many of us who are spending too much time in front of the screens. According to the website “Eye fatigue and other annoying visual symptoms occur in 50 to 90% of people who work with computers”.

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Moving blue light

Visual disturbances are not the only thing we earn from spending too much time in front of the blue light of the mobile. The consequences can be several and include:

  • Physical fatigue.
  • The decrease in productivity.
  • Increasing the number of errors at work
  • Small discomforts such as jerky and involuntary eye movements and red eyes.
  • Tearing
  • Blurry vision.
  • Double vision.
  • Difficulty focusing your gaze on objects.

These are the measures that the portal recommends to avoid visual fatigue and other discomfort caused by prolonged use of the screens:

1. Get a complete eye exam

If you are having eye discomfort after a long workday, then it is a good time to make an appointment with the closest ophthalmologist.

It will always be best to go to a specialist for a check-up that allows us to know how our visual health is.

2. Use adequate lighting

a properly lit room It can help prevent eye strain and general health problems.

When we are working in a room with poor lighting, we will most likely have to strain our eyes, since the ambient light is not enough to appreciate everything correctly. When these conditions are prolonged in time, the symptoms of visual fatigue will appear.

3. Minimize glare

The reflection on wall surfaces or on the screen itself the device can cause eye strain.

Consider taking up an anti-glare screen on your monitor, and if possible, paint the walls that have a bright shade a shade darker.

Wearing anti-reflective lenses is also a good idea, as they reduce the amount of light that the front and back surfaces of the lenses reflect onto your glasses.

4. Get a better screen

Although unlikely, you may be using a cathode ray tube monitor. If this is the case, it is best to change your old monitor for a flat screen.

The LCD screens are a little kinder to our eyes And they have a plus: most of them have an anti-reflective surface.

5. Adjust computer display settings

  • Sparkle: make your screen brightness match the brightness in the room
  • Text size and contrast: adjust these items at your convenience. If you are reading or editing large documents, it is best to use a combination of black on a white background for convenience.
  • Color temperature: The blue light emitted by the screen of electronic devices can be the most harmful to your eyes. Technically, blue light is defined by a short wavelength that is associated with increased eye fatigue. However, shades such as orange and red are associated with a longer wavelength and in turn with less eye fatigue.

6. Blinks more often

Moistening the eyes is a very important matter when we are in front of the screen for a long time. Blinking helps precisely with this purpose, and in this way we can avoid dryness and irritation in our eyes.

7. Exercise your eyes

It is advisable to look away from the equipment at least every 20 minutes and rest your gaze on an object that is distant. This will help prevent too much time forcing our eyes to keep focus close to the screen.

8. Take frequent breaks

Frequent breaks will help you avoid back and shoulder neck pain.

9. Modify your workstation

An ergonomic chair will help you reduce physical pain and discomfort.

A well-lit document holder will avoid the strain on your eyes when you need to move quickly from the document holder or printed document to the screen.

A support for screens that allows you to place it at a suitable height, at which you should not bend your neck too much.

10. Consider wearing glasses to be in front of the computer

Ask an eye doctor for a prescription for special glasses to be in front of the computer.

This is especially helpful if you wear contact, bifocal, or progressive lenses.

Contact lenses often cause dryness and can become uncomfortable if we spend too much time in front of the computer.

In the case of bifocal or progressive lenses, these are not optimal for the distance at which one usually works in front of the PC. The best option is, therefore, to use special glasses to be in front of the PC.

If you have come this far, there is only one more recommendation to give you from me: prevention is the appropriate way to take care of your eyes.

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