Bests & Worsts Reviews from Amazon

I have chronic dry eye, so I have some experience with many types and brands of eyedrops. As thickness/viscosity goes, this is truly one of the thinner preparations I've ever tried -- the "nano droplet" descriptor seems to be appropriate. I find that they hydrate extremely well because, being on the "thin" side, they can get into all little recesses under one's eyelids, and they do not blur my vision longer than a couple of seconds. That's really a big positive, as I've had a lot of negative experience trying to get high-viscosity drops to coat my eyeball fully. As for duration of effectiveness, I'd put these at a medium-short length, compared with other drops on the market. They do seem to last longer than most low-viscosity drops, but they don't last as long as I'd like for a drop that advertises itself as "long-lasting." With that said, if you want a thin drop that offers great coverage and lasts for a medium duration, these are very good, and I can highly recommend them.