I developed floaters years ago [I was told if you were near sighted, and lived long enough, that you would develop floaters]. Recently I developed dry eyes along with itchiness. I applied 2-4 drops of Castor Oil at bedtime. The first treatment removed the dryness 90%, so I continued nightly for 7-8 nights and my eyes feel almost 'new'....to my surprise, my floaters have reduced 90% as well [treating for floaters was not in my plan] :)
I too have put castor oil in my eyes for floaters; it took them away. I did this several times, it worked just fine. There is no pain at all when you put castor oil in your eyes.