Hydrotac OPTX 20/20 Stick On Magnification Reusable Bifocal Lenses - +1.75 Diopter (Pack of 2)

I like the fact that these can go on any glasses. I put them on safety glasses. I didn't cut them at all, so I now have larger bifocal areas on my safety glasses, which is exactly what I wanted. I have to wear safety glasses all day at work and I'm tired of having to hold my head in a certain way and looking directly down to see up close. They are clear and work wonderful and now I don't have just a tiny spot I can read through like most bifocals safety glasses. I like the fact that I can put the bifocal areas where ever I want them to set, that will work best for me.

Not sure if the 3 pairs of glasses I tried these on are designed different, but these simply wouldn’t stick, like even a little bit…returned them.

Their great for what they are. They seem to cloud up over time, but don't we all. I imagine I'll buy b another pair eventually, but I kept my previous pair for 2+ years. Not bad for a stick on. I have a pair of ray ban shades I keep them in. Typing this review now with them.

Don’t tell your kids, I said this..... but for old guys this is great for texting on the go... or reading emails on the go.. or whats is the channel on OR what is the name of the song...Im not 100% sure I love them because I’m aware of them being on my sunglasses.... easy installation ... cut to fit... stick well with a little water.... and don’t slid around....Don’t tell your local HPD about them.... because its our dirty little secret, that we ALL loved to see what the speed limit is on the dash when we are speeding.. who am I kidding nobody ever looks at the speed limit..... oh... if used while driving please us responsible at least more responsible then the soccer mom in the next lane texting her friends with her good eyes....

I had a pair of these to put inside my monogoggles at work (I work in a chemical laboratory). I had the old ones in a pair for YEARS and loved them. As I said, years. So, it came time that I needed to increase the magnification strength, but have had issues getting these to stick and not have lines in them. I don't know if the quality changed, or my ability to install them. I put them in a brand new pair of goggles, and just can't seem to get them to work properly, so having trouble actually seeing through them.

These did not work as I had hoped. It seems simple enough to just put these on your existing glasses. I didn't get the vision I was hoping for or the ease of use. Depending on the curve of the lense these stick ons may not have 100% adherence either. I had them stick on one set of sun glasses but have dry edges on other. I wonder if the thin film of water affects the clarity. I just didn't get the vision I needed and they didn't stick as expected. I'm going to go get prescription lenses.

I’ve had these for 2yrs and they work great. I have removed and put on different glasses several times.

I bought two pairs of the 1.50, and I absolutley love them. Incredible product. But apparently, they no longer manufacture any sizes except 1.75 and larger. (Try an find 1.50 anywhere on the internet...gone)So I bought the 1.75 because of how well the 1.50's work, and they are useless. Its either because the pairs I bought are defective, or the 1.75 size is too thick to conform to the curvature of any sunglasses. Maybe they changed the manufacturing process, because these 1.75 are very stiff and impossible to apply.

I purchased these a few years ago, and they were great, very clear. So I was surprised when I purchased them recently, they were softer and blurrier, to the point of being unusable.

Funcionaron bien un par, pero No se pegan a unos lentes de protección claros que tengo. No sé si se requiere calentarlos.

Installed them on my sunglasses which I use when wearing contact lenses and playing golf. Had to trim them to fit so they don’t take up too much space and obstruct my view. I’ve only used the a few times however so far so good.