OPTX 20/20 Hydrotac Stick On Bifocal Lenses +1.50 Diopter | Magnifying Adhesive Reading Lenses | Sunglass Magnifier Add On | Reusable Design

These worked great for my husband. He uses them on his sunglasses so he doesn’t have to wear his classy black readers on the tip of his nose while wearing his sexy Maui jims. They stayed stuck as intended for over a year until one fell off whilst the glasses were dropped. No fault of the product.

I could not get the lens to properly adhere to my glasses no matter what I tried. I'm pretty handy/mechanical and get most things to work. Not this item! I read the instructions, watched YouTube videos, got telephone advice from the manufacturer customer service twice and no luck. I feel that there was enough difference in the curvature of the inside of my glasses compared to the outside of the "stick on" lens combined with the rigidity of the stick on lens that the water adherence process could simply not overcome. Maybe they work/stick properly with different glasses/prescriptions/stick on lens diopter combinations, but not with my case. Had to return.

Stick like glue even without water. They work pretty well

These are OK, but they're not 100% crystal clear and flawless like a ground and polished piece of glass. In brighter light conditions I thought they were pretty good at first. I'm older and need bifocals or something for reading, but the last time I got bifocals from my optometrist, I just could not get used to them. I'm OK with them when I'm sitting down, but for walking, and especially going up and down stairs, I definitely didn't feel safe not being able to see the ground or my feet clearly, but that's beside the point. When I hold these up to a light, in particular near the edge of my computer screen, the contrast revealed a small amount of waviness. Maybe the flow lines are from the molding process, I'd guess, but they also just seem ever-so-slightly hazy. My prescription is about -9 diopters so I'm particularly sensitive to dirt and smudges on my lenses because I have such a short focal point, and I always like my glasses to be extremely clean, so I noticed a difference, but I don't think most people would be concerned with this. I had one fall off so I washed them and applied them more carefully, but my lenses do have a very high amount of curvature and I can see some separation happening again. These are super thick and noticeable of course. I wouldn't expect the results to be as good as actual progressive lenses, but I felt they could be slightly better if they were thinner and made of a different material, it that's even possible, but 4 stars was my opinion anyway. I would also do better with a +3 correction instead of +1.5, but these were available and they do help. Thank you for letting me try them out.

These may or may not work on flat lenses, but they will not stay in place with wrap-around style sunglasses. I tried them both inside and outside the lenses, and no dice. Yes, I verified that I had the on right side out.

So these are 👍 great. They are clear,crystal clear! Easy to install. They stay put. You can remove them and install in other glass. They don't seem to scratch easily . The material acts like vinyl with a lense in it. You can trim them to fit any glasses. A sharp pair of good Scissors ✂️ will do the job. They come in all strengths so be sure to check that box when you order DO NOT PAY $38.00 FOR THESE. They are readily available for $19.00. Last, be careful cutting to size I got one backwards the first time. ✌🏽♥️

I've used these for 20 yrs or so. There was a time during the pandemic they were unavailable. Before you put them on look closely for defects If so send them back as it'll mess with your eyes. It rarely happens though. I've found running them under really warm water helps with putting them on.

Complete junk, would not stick to the lens even when I got them on long enough to try them it was blurry. This was my second attempt with these.