Floaters are just plain harmless floaters (cell debris) if you're slit lamp exam at your eye specialist shows no real inflammation of your retina. If the exam shows the retina is normal, then these floaters are definitely not parasites. Parasitic floaters caused by organisms such as toxoplasma would be associated with definite scarring of the retina, and would be immediately noticed by the opthalmologists. If you are unsure, book an appointment with an eye doctor, and discuss it with him. Either way, I highly doubt a parasite cleanse would be harmful if done corectly, regardless of whether you have floaters. But if floaters are you're only symptom, they are highly unlikely to be due to parasites. Good luck.