I've been using Can-c eye drops to help with my cataracts for about three months. I hadnt noticed much improvement until I lapsed on my usage. My vision immediately clouded up like crazy, so I got right back on them with a vengeance. The cloudiness quickly reverted back to its former level.
It is scary when you run out. A few years ago there was a shortage and I couldn’t find any for a few months. My floaters came back with a vengeance and took about 4 months to get back to where they had been (essentially transparent).