When this first manifest for me, I was checked out by an ophthalmologist. After a thorough exam, he gave me the all clear. By thick tears, I was not saying the thick tears were the floaters. The thick tears just caused the debris in the tears to not 'sink' but rather stay suspended.

The ophtho said to watch for floaters that tended to stay in the same place after blinking and had a red or brown tint. He said that if they had a red or brown tint, get to the ER immediately. He seemed to be more concerned about whether there was any perceived color.