Privacy film can hurt your eyes and even cause blindness? Do you still dare to use it?

Is privacy film really useful?

"Can students surf the Internet without being noticed?"

"Can office workers slack off without restraint?"

However, some netizens said: Since using the anti-peep film, my eyes have become dim and blurry, and I gradually found that there are black shadows when I see things.

I feel like I’m going blind!

The principle of privacy film

Anti-peep film is a mobile phone film that prevents others from peeping into the screen.

When playing with a mobile phone, the person concerned can see the screen contents clearly in the vertical direction, but others who look at it in the diagonal direction will only see a black screen.

Based on this, the privacy of mobile phone users is protected.

The core of the privacy film is the use of ultra-fine blinds optical technology, just as we look through blinds, the scenery we see is different from different perspectives.

When we look out the window from the front, we can see the whole view, but when we look from the side, the view is blocked by the blinds.

The principle is to regularly reduce the distance between the blinds blades and use a blind layer with ultra-fine blades, so that the light on the front side of the screen is only blocked by the narrowest area of ​​the blades.

The highest transmittance and the strongest visibility.

As the angle increases, the area of ​​light blocked by the blades becomes larger, the transmittance gradually decreases, and the screen gradually becomes darker.

Studies have shown that after adding an anti-peep structure to a mobile phone screen, the brightness is reduced by about one third.

Many friends who have used anti-peep film have reported that after applying the anti-peep film, the screen brightness will decrease, and the screen brightness needs to be increased to achieve the original visual effect.

This is mainly because of the existence of the shutter structure in the anti-peep film, only a small part of the light emitted by the screen can be received by the eyes.

Does privacy film hurt my eyes?

There is currently no research on whether using privacy films can cause damage to the eyes, so the claim that privacy films can harm the eyes lacks relevant scientific and medical basis.

But it should be noted that when the phone is covered with a privacy film, the screen brightness is too low, which makes it more difficult for the eyes to see things, and may induce or aggravate visual fatigue . Especially for long-term excessive use of the eyes, the impact will be more serious.

When using electronic products for a long time, the number of blinks is low, which can easily lead to dry eye syndrome, and also cause soreness and fatigue in the eyes.

Can privacy film be used?

Nowadays, looking around, more and more people choose to put "anti-peep film" on their mobile phones on public transportation such as subways and buses, or in public places.

When people are reading entertainment gossip or looking at private pictures, they will be glanced at by others from time to time. Perhaps it is the suffocating feeling of being peeped at and the fear of personal privacy leakage that are the fundamental reasons for the hot discussion about "anti-peep film".

Those who choose anti-peep films are just longing for spiritual relaxation and a sense of security that their privacy is protected.

Finally, a reminder to everyone: Try not to use privacy filters if possible. If you really need to use them, don’t spend too much time on them. Also remember to brighten the screen after use.

In addition, when using electronic products, do not look at the screen for a long time. Most of today's mobile phones and computers have built-in eye protection mode, which can be turned on when the light is suitable.

You should also avoid using your eyes for long periods of time. If you experience eye fatigue, dryness, swelling, pain, or other discomfort, you should immediately stop using electronic products, look into the distance 6 meters away, and relax your eyes.

It doesn’t matter whether it is protected from peeping or not, eye protection is the most important thing!