Fiber Optic Internet Installation & Eyesight: Laser Safety, Cable Handling & Ankle Device Concerns

Hello. Please take this question seriously. I have recently installed internet via fiber optics. The cable was pulled through the ventilation and attached to such ankle. The gentlemen explained that it is a device that diverts light into a radio signal. On the ankle with 2 plugs there is a yellow exclamation mark and the words "Optic". I read a little about fiber optics and my fear of lasers activated This device and router are at the top of the cabinet. There are plugs in each socket on this device.

If in this case, if the plug is inserted into the device, there is no risk of eye damage even when looking at the device (I suspect it is, but I make sure, please do not shout ).
Does the light from the fiber come out somehow further with those cables that go to the router e.g. if the cable is released one floor below, is there a risk when looking at such a cable? Or maybe this fiber optic cable is going down, or is it done without any safeguards?
And also, if at night I turn off the extension cable to which the router is connected at night and is a device for several days, is the optical fiber still dangerous or is it somehow less protected by ankle?

I know these questions may seem ridiculous, I realize that this infrastructure is being built safely and I have read and fiber optics, but I would be very grateful for any additional answers.

I greet and have a nice evening.

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The technician has not lost his sight? You won't lose it either.

They can be harmful if you look really long. Develop a pattern of not looking at yourself. Or buy an adapter with a blank.

Added after 1 [minutes]:

Kraniec_Internetów wrote:

The same is true with these cheap bazaar lasers.

These lasers from bazaars have their power. Be careful.

They can be harmful if you unplug the fiber from the supplied device and stare at its outlet. If the optical fiber is plugged in, you can look at the whole can until you die and nothing will happen to you. At least not because of the optical fiber.

Look here: https://pl.m.wikipedia.org/wiki/Laser
To the Occupational Safety department.
Compare the laser class marking on the device with the description and draw conclusions.

Hello
A market laser with a power of several mW easily damages your eyes!
Dozens of mW lights a match instantly, the focused laser beam has a very high power density and has been the cause of eye damage many times, just watch the news on TV to see eye doctors from time to time talking about the next victim of play with bazaar lasers.
A small bazaar laser gives a power density of over 3000W / m?.
As for the fiber optic net, it is generally safe, the problem could be to look into the fiber in its axis, what comes out of the converter is LAN by wire or WiFi signal and has no effect on the eyes.
The question is how dangerous it is to damage the fiber optic cable or break it. It seems that both problems carry no risk, radiation transmitted through the fiber practically does not go beyond the axis of the fiber.
If the cable is broken on an unprocessed surface, the radiation will be scattered and the power density will decrease.

Moderated By dt1:

The topic was cleaned up, because the part of the discussion removed from that moment had no substantive value and, by theories created, not supported by any logic or measurement, only introduced unnecessary confusion.

Hello. Some time ago I switched fiber from one router to another. Unfortunately, somehow escaped my attention that you must not look at the cable and that something did not work, I looked at the cable for a moment, could it damage my eyesight? Some time after this situation, I started having problems with one eye, hence my question

@ Viki77
Only an ophthalmologist can answer this question.