All the strings and floaters that you see are from your vitreous fluid. If your astigmatism is bad, usually the more floaters you have since the fluid is pulled off from the odd shape of your eye (i think that is the easiest explanation). Anyway, the more the fluid breaks off and the more floaters or if your floaters suddenly change is when you should notify your opthma since that could mean you have a hole/tear in your retina.
I have had several retina detachments, my vitreous fluid has been removed so I have very few floaters. I miss seeing those strange things now. I know exactly how many floaters in each eye I have now whereas before I guessed it was dozens or hundreds.