Without my glasses, I can see things at 20 feet/6 meters, about as clearly as the average person can at 800 ft/approx. 243.8 meters.
The floaters are tiny, nearly transparent things that just seem to "float" in your vision. A lot of people have one or two of them and they may not even notice them unless they "float" into just the right place. But I have so many that they ALWAYS obstruct my sight somewhat.
Take a clear plastic bag. Now draw a whole bunch of tiny little squiggly lines on it with a marker. Hold that up to your eyes. Then imagine those tiny little squiggly lines also MOVING around constantly.
That's what it's like to be me.