HYDROTAC Stick-on Bifocal Lenses +250

Being an optician for 20 years and having used stick on prism for patients this was very easy to install. I wanted a 2nd frame color from Zenni optical so only got the free single vision lenses ( planned to just swap the progressive lenses to the frame color i wanted as needed). These will not help much for computer, etc work but on my tinted single vision lenses they are the bomb! I went up a bit on power and can see detail and read like an eagle. If you have good distance vision and are tired of carrying around sunglasses and readers then get these, follow the directions and put them on your sunnys and just like that you only have to carry the sunnys and you can still read. 100% would recommend!!!

OK, I admit I did not try to use this product as intended. My ambitious plan was to glue this 2.5 diopter lens into my SCUBA mask so I could read my dive computer easier. I used (separate purchases) LOCA glue and a UV flashlight to glue the lens in, and then cure the glue. (LOCA glue is typically used to attach smartphone glass panels). The glue and UV light worked GREAT! - crystal clear! But the lens, used in this fashion was not worth a hoot. My dive computer was not easier to read - it was perhaps worse. The good news - I was able to pull the lens out and remove the glue so my SCUBA mask is back to square one. Onward to Plan B. Maybe this lens is OK when attached to your sunglasses, but NOT for a SCUBA mask, in my humble opinion... Tried my best, didn't work...

I purchased a couple pairs a few years ago. The stick ons work well once you get use to them. I use them for Cycling. I wish they were slightly bigger. It takes a little while to adjust to the edges. They do work.

EXCELLENT solution,--for my situation-- First I should say these attachable lenses are a WONDERFUL INVENTION & WORK PERFECTLY-(FOR ME). I'm THRILLED I found this option,--They were also not too difficult to apply-(it was a little hard to handle them) without getting my finger prints on them before they adhered to the glass etc., that was tricky & took some patience, as did the proper placement, but it literally took me no more than 2-3 attempts and in under 5 min I was done & reading perfectly!! AND NOW, having said [that] I should explain HOW I Utilized them to work for MY SITUATION!! --- I had a pair of expensive titanium framed eye glasses I never wore (it was just for a light stigmatizm) I didn't [really] require them to see,--([that] plus "vanity" prevented me from wearing them)--FAST FORWARD 25yrs later when I hit my 40's & suddenly I was BLIND as a bat (& couldn't read a thing!?)BUT I could NEVER find a pair of "readers" that weren't heavy, or hurt to wear! Then l saw these "stick-on-lenses" & remembered my old tiny titanium-framed glasses, I figured I'd give it a shot.(My glasses were quite small, I knew I wouldn't be able to use them at "the lower half"--but I figured It would cover most of the area of the eyeglass while not distracting my vision or being uncomfortable)SURPRISE! THEY WORKED PERFECTLY!! It Covered most of the area of my small oval-shaped-frames & were PERFECTLY USABLE & completely COMFORTABLE,--which was what I needed, comfortable, light-weight glasses I could wear all day at the computer in my house!,--woohoo! I'm Sooooo happy. *I would CAUTION anyone CLEANING these to do so VERY DELICATELY & CAREFULLY because they seem easily scratchable if the wrong material was used to wipe them clean!--(they are a semi-hard polymer plastic after all)... I intend to try another pair to use on sunglasses in the future... I think these are a great invention & fantastic option for ppl who need readers alone or in addition-to, but perhaps don't want "two" sets of glasses, or don't want to spend the (considerable) cash for bifocals etc. 👍🏼

They were hard to get to stick properly and in the right place. I would think twice about buying again, only because readers with bifocals are so cheap. Worth a try for Rx glasses.

Work great on my sunglasses. The size of the lenses does affect the optimal location as does the distance apart. The beauty is that these can be moved around when first wet (or subsequently if desired) to ensure best visionary plane. I buy expensive sunglasses and cannot, with aging, changing prescription, buy prescription glasses. This product negates the need for prescription eye protection, but enables me to see the car dash. My ophthalmologist did test my eyes for best number to get based on the distance to the dash, which is different than if I were reading a book or doing computer work. So the lenses were actually 2.25 instead of 2.75. Not saying this would be the norm for others but it works fabulously for me. In a store when I forgot my other glasses in the car, it was not easy to read the ingredient label with the lesser magnification.....so I've learned to either not try to read ingredient labels or to have a small magnifier in my wallet (credit card size and very thin) I can resort to.

I just returned from a week in the carribean with these on my maui Jim sunglasses and couldn't be happier. First, they were very easy to put on. They have to be trimmed with a sharp pair of scissors (or i suppose a razor blade would work too). I put them in hot water for a couple of minutes until they got soft and pliable. They stuck on the first time and Its been over a month, including getting them wet in salt spray and rain (I didn't deliberately go under water with them which I think would be kind of stupid). Absolutely love them. Incidentally, I had purchased a similar set five or six years ago for my Oakleys and they are still in place, although I didn't trim them as exactly as I will the new set I'm about to order for the Oakleys. I highly recommend them.

I bought these reading lenses to put onto my expensive sunglasses. I followed the directions exactly however the lens does not seat onto the glasses properly. I tried to fit them onto my glasses three times. The first time, the edges lifted up so there was a small air gap making them unusable. On the second and third attempt, all kinds of small air bubbles developed under the lens...so it was like looking through fog. I would not recommend these.