First, these were on Amazon for about $10 less than Kroger and Walmart, so I bought 2 of them. There are generic brands I've used that work well, but the cap on these can be placed back on, after using, to preserve them for an additional application or two. Thus, it's an overall better value, to me, than the cheaper ones for which you cannot put the cap back on after twisting them off.

I have dry eyes and wear kinda pricey daily wear lenses for dry eyes. These do a great job of adding moisture and are ok to use with contacts. They are also preservative free, which makes them better for sensitive eyes than the bottled ones which contain preservatives. I can and do recommend these for people with dry and or sensitive eyes, contact lens wearers and those without.

This is the only eyedrop I will use. There are only ingredients in the drops to moisturize your eyes. Most drops irritate my eyes, but these do not. If you suffer with dry eyes like I do you will love these

Because there is no preservatives in these single use vials they can be used frequently for dry eyes

There's been a recent scare with the safety of preservatives in eye drops; that's why these single-use blister packs are so valuable. No preservatives needed when each dose is hermetically sealed.
This is the only brand of eyedrops I can use, since it doesn't contain borate as a buffer, and almost all other products I've seen out there do. There are a few products from this brand with borate, but this one is safe and very neutral.
I've been using this product for years with no problems and will continue to use it due to my borate sensitivity despite its downsides of higher price and single-use plastic waste (really, the product would be equally good if the big plastic handle attached to each blister pack were half the size, the plastic waste really adds up and there's no indication these can be recycled).
There are about 7 full drops of saline in each individual serving. It's cool that the blister packs can be re-sealed (for SOME products in this brand, not all) to use part of the saline later, but I'm a little nervous to do that since they have no preservatives. I'd guess that every time one is opened, there's only a certain amount of time it's safe to use.

My eye doc recommended these and I've been using them for years. I like that they have no preservatives and that the little cap can be put back on so that I get two uses out of each container.