Ston, I think you might benefit from reading this article about the way constant Zoom and Teams sessions are driving a lot of people to undertake cosmetic procedures.
www.bbc.com/worklife/article/20200909-why-plastic-surgery-demand-is-booming-amid-lockdown
An excerpt:
As much as we may now be trained to sit on video calls and stare at our colleagues through a computer screen, many of us find ourselves constantly distracted during our daily huddles and meetings. It’s not the dog barking in the background, or the roommate making lunch over someone’s shoulder – it’s the sight of our own faces.
And the longer that video thumbnail stares back at us, the more we start to notice things. Were those crow’s feet there before lockdown?
Did my nose suddenly get bigger? Is one eyebrow higher than the other?
Does this sound familiar?!
This is not to diminish your individual experience, but many people are getting upset about their faces as a result of camera distortion, suboptimal lighting and unusual angles.
In your OP you say:
'I have recently noticed that one of my eyebrows is significantly lower than the other.'
If you've managed all this time without noticing, it means that you are now picking up on something very, very tiny that you've probably only spotted because of all the remote video communication you've been doing recently.
Please remind yourself that there was a time before all this when you didn't keep thinking about it - and there will be a time afterwards when you stop constantly turning it over in your mind, I promise. Give yourself the best possible chance to switch off the repetitive thoughts by immersing yourself in other things. Books. Movies. Exercise. It doesn't matter. And be gentle and patient with yourself.
I like your eyebrows.
Good luck!