Lights/arcs inside of waveguide cover - was it safe to look at?

Hi, I asked this question on another old thread but was not sure if that question will be seen so I thought I would start my own thread.

First, thank you for all of you who will respond to me. I appreciate it alot.

Okay so here is my question:

Hi I am having the crackling/arcing/flashing light in the wave guide cover when my microwave runs. The issue just started. I did read previous threads on this issue and know to clean the microwave really good.

What I want to know is this:

Was it dangerous for my eyes to see those flashes of light or "arcs" in the wave guide cover? I was standing back at the sink about 4-6 feet away when it happened and I could see inside and see those flashes. I have an eye disease so I get concerned and have anxiety about eye damage. I hope it was safe for my eyes to see those arcs? I mean, I heard the crackling noise and looked towards the inside of the microwave and saw those flashes (or arcs) at the wave guide location and then turned it off. I sure hope this was not dangerous for my eyes to see. Its not like a welders arc, correct?

Thank you so much

Any answers from experts would be greatly appreciated. Thank you so much.