One treatment which is almost always overlooked is Homeopathy. These treatments are sometimes disregarded due to lack of tests, but make no mistake the actual grounding and history of using these products outdates many modern medicines.
From a Chinese Medicine perspective, floaters are an indication of congestion in the liver, kidney and colon. There are some herbs and nutrients recommend for their abilities to eliminate congestion in these organs in order to keep the vitreous of the eye clear from these annoying specks, as well as to help strengthen the retinal tissue and integrity of the blood vessels. Try ReVision Formula or floater homeopathic pellets.