I know very little about floaters, but I heard they tend to go away on their own eventually.
A serious eye problem could be “macular degeneration” — recommend seeing a retina specialist sooner, rather than later. One type can be stopped with laser surgery.
As a general support for the retina, I recommend taking Vinpocetine, 30 mg daily. In Europe it’s a prescription medication, I think under the brand name Cavinton. But since it’s a plant extract, in the US you can get it without a prescription as a natural supplement.
I read up on it, it is supposed to help blood circulation in small capillaries, which is helpful for the retina, also for the brain.
Swanson vitamins has it, can order it on the web.
I have been taking it myself for some time now. No negative side effects that I found.
Good luck.
Also a Lutein/Zeaxanthin supplement. These can be somewhat expensive, but may be available under the Swanson brand at a good price.
There have been several long-term studies of Lut/Zea supplementation, and it is considered effective at delaying or preventing age-related macular degeneration.
also make sure to wear dark sunglasses when outdoors in the sun.