The increase in exposure blue light in which we are all immersed in recent years, entering our lives as fundamental tools electronic devices that in their operation emit this light on a daily basis, this causes a significant increase in pathologies produced by the emission of blue-violet light.
Increased pathologies caused by exposure of harmful blue light.
Every time we sit in front of the computer, we use the laptop, look at our messages on mobile and even when we watch our flat screen TV at home we expose ourselves to the harmful exposure blue light.
Many times we are not aware of the number of hours throughout the week we spend exposed to blue light-emitting devices or the damage it is causing us in the medium-long term.
Let’s list the main causes that cause an increase in exposure to blue light.
1 Different devices emitting in a blue-violet light wavelength
The different electronic devices that we use in our day to day whose use has increased exponentially in recent years emit in a wavelength of blue light much greater than that found in nature.
For which our retina is not prepared and that will gradually cause us harm in our vision.
Not just the feeling of tiredness that we’ve become used to. It is directly related to the hours we spend exposed to the blue light produced by our daily work devices.
We’re talking about real damage to our retina in a medium or long time.
2 The increase not only of hours we spend in front of these devices but the number of them that have increased our day to day.
Let’s take an example.
A person spends an hour and a half a day in front of the TV.
Look on average about 100 to 170 times your mobile screen.
It goes from 2 to 4 hours in front of the computer screen.
Use tablets on average for about 2 hours a day.
I think this small example, which is not at all exaggerated, gives us an account of the increase in blue-violet light exposure to which we are exposed each.
How our blue light exposure has changed compared to that of our parents and we are not even able to imagine what percentage of joy in light our children will face.
3 The short time in which this change has occurred has not given biological time to an adaptation of our retina.
Literally in just 20 years biologically it is impossible for our body to create defenses or physiological mechanisms to defend against the permanent and constant bombardment of blue light in our lives so suddenly.
Physiologically we need more time to adapt.
So the damage caused at this early stage of exposure will always be more aggressive.
Pathologies associated with blue light.
There are different pathologies and syndromes caused by excessive exposure to blue light.
1 Alteration of heart rhythms.
When for a long time we see the screens of our electronic devices our eyes have to see in high light conditions even in the night hours, aggravating in these hours when there is a contrast between the low light of the environment and the excessive light produced by our devices.
Reduces melatonin production. This action is performed by the brain because it confuses the natural light cycles for which it is prepared.
Altering our sleep function and ability as melatonin regulates sleep cycles.
This in the long run causes serious health problems and alters heart rhythms.
2 Fatigue and visual stress.
This fatigue occurs directly by exposure to violet blue light or by constantly focusing and for a long time on a daily basis forcing the view.
When we read an article on our smartphone we force our eyesight for a long time producing fatigue and visual stress.
This will in the long run cause an increase in eye strain. let’s keep in mind that the stress we subject to our retina is daily and not circumstantial so we don’t give time to recover from the effort put into our vision between exposure and exposure
3 Macular degeneration (DMAE).
Age-related macular degeneration is a pathology of the macula, an area at the bottom of the eye that undergoes pigmentation.
Cells that make up the retinal macula do not have the ability to regenerate and people who spend a large number of hours exposed to violet blue light accelerate the degeneration of these cells.
People with macular degeneration have problems in the central vision is lost is exacerbated over time.
It is a very common pathology in people over 60 years of age.
4 Computer visual syndrome (ISD).
(SVI) is a syndrome of the recent appearance directly related High exposure to violet blue light and for many hours to which professionals who work their entire day in front of a screen are subjected.
It is estimated to be suffered by approximately one in 7 people.
And it features a picture of red and dry eyes, tired eyes and frequent headaches.
If you walk past the screen of a computer more than 3 or 4 hours a day you are a firm candidate to suffer in the future computer visual syndrome.
In the case of diabetics are at-risk patients and have to take care of their eyes above all
How we can protect our vision from blue light.
1 Improve our diet.
Add to our intake foods rich in lutein and zeaxatin these are two antioxidants,program what we can ingest in our diet and that various scientific studies shows that they are effective in protecting ourselves and strengthening our vision of the harmful effects of violet blue light.
These antioxidants are present in the relationship of foods that we expose below.
- Red grapes.
- Sweet melon.
By introducing or increasing these foods into our diet on a regular basis we will increase in our body the levels of lutein and zeaxatin.
2 Use protective screens that partially block blue light.
Using violet blue light protective screens on our mobile devices, computers and TVs is always a good choice.
Blocks blue light emission by 20%
Prevents cell death of the retina by 25%
they just have the drawback that you need a screen for each device that emits blue light.
3 Wear glasses that block blue light.
Blue light protective goggles are a great alternative.
Much more practical as it is effective against any device you are wearing, needing only the glasses you are wearing.
Effectiveness depends heavily on the lens you’re wearing, but as a rule most lenses also block about 20% of blue light and effectively protect against retinal degeneration.