Radar, Barbara is right. I too have floaters which manifested themselves in the nearly eleven years I've been on HT. No proof of a direct connection. I also had a central venous occlusion which came out of the blue a few years ago. Some very effective injections into my eyeball gave me 90% of my sight in that eye back, largely because I went to the Eye A&E at Coventry for checking the day I became aware of the problem. So do see one of your GPs or even better do as I did, if you have such an A&E specialty near you.
Good Luck and don't delay - sight is a very precious sense.