No, if they are on an internal surface.
The eyepiece needs to be taken apart and cleaned, which with a zoom eyepiece is complicated and needs a professional, preferably Kowa.
Also maybe reblackened.
Some simple eyepieces, I have taken apart, but again one must know what one is doing.
If the eyepiece is waterproof, then a professional is needed.
I think these are paint flecks from the internal blackening, and they could move more centrally, but at the moment they shouldn't be too bothersome.
I am not sure if a Baader Mk IV zoom eyepiece works on your Kowa.
I don't know how much Kowa charges for cleaning this eyepiece or whether it can be done in Finland.
There may be a good independent repairer in Finland.
I bought six Leica Colorplan lenses from a shop there that didn't work. £5 or 50 FMKs each.
I rearranged all the lens elements and sold them for £15 each in a few minutes. I should have asked £30 or £45.
It is up to you what you want to do.
Regards,
B.