Optx 20/20 Hydrotac Stick-On Bifocal Reading Lens, +250

My prescription sunglasses are single vision for distance. Adding these I can also read. My prescription is strong and they did not adhere totally. About half of the bifocal is attached to my lenses. On photo of inside of glasses, the top is lighter because not attached there. I may have done something wrong or may just be the curvature is too different. So far it is working. Also easy to remove and reattach.

They are easy to stick on your specs. They are clear. They work. These are not my first pair, but first after cataract surgery with fixe focus. I would suggest the manufacturer make them with gradient focus similar to bifocal specs with gradual focus, no line.

Struggled with getting this pair to stick and an unobstructed view. One fell off and is gone.Previous pair(had to increase magnification) from years ago worked perfectly.

I was so disappointed in the many fashionable sunglasses I've purchased throughout the year's but could no longer use because I could not read anything! I saw these on Amazon but, was reluctant given some reviews. I am BEYOND excited I bought these and they work PERFECTLY. I followed directions and they were easy to install. For those who like instant gratification, take note it says to let sit for 24 hours so the bifocals dry thoroughly. I am hooked and will be buying more now that I know they really do work!

I would recommend.

It takes awhile to get the hang of how to cut and set the lens so that it does not dry with air bubbles.Tip one is use lots of water and don't press it out too hard or too fast. Let the lens get tacky and then gently put it into its final position. Then gently press the excess water out and slide the lens to make small adjustments.Tip two is make sure to measure your center to center distance using an existing pair of bifocals - and use that as a guide for positioning the lens on your target glasses.This is not a replacement for sunglasses or cycling glasses with a bifocal option, i.e., Maui Jim makes awesome bifocal reader sunglasses. A built in bifocal is far superior to stick on lenses.However for one piece lenses like the Smith Pivlock or the Tofosi Podium these readers are fantastic.If you have sunglasses or sports equipment where there is no bifocal reader option then I highly recommend these lenses. Just remember to get at least 2 pairs so that you can practice on one set of glasses before working on the pair you really care about.Why can't they come out with a peel off sticky lens? I have no idea. However with patience and practice these are a life saver so that you can see your cycling computer or GPS.

I did not expect these stick on bifocal lenses to exceptional, but I thought they would be functional...it takes too long to get there though. While the instructions are clear, the method of attaching is clumsy, and just doesn’t work well. I found it much easier to place the lenses in a cup of very warm water for about 15 seconds, and then immediately apply them. I also suggest you make a placement mark on the outside of your glasses with a sliver of soap so it’s easier get them placed exactly where you want them. It would be nice if the instructions included that tip, and tips on how to cut them down.Finally, I think the lenses are just too big. They might work well for goggles or very large glasses, but they’re not suitable for most glasses. If they offered a smaller size as well as this size, that would be great.

Seems ok. Not sure strength is accurate but better than constantly switching from sunglasses to readers

These are great. I use them inside my lamp working didymium glasses. It was painful to wear my sight glasses under the lamp working glasses, prescription didymiums are horribly expensive and so are the fit-over glasses, so I gave these a try. I have had no problems with them falling off, as other buyers have. For my personal use, they would have been nice slightly bigger, but they do the job very well. Very pleased with them for the price.

Turns your glass into bifocals, no hassle. They stick on with a drop of water and form an impressive seal.I can actually see my phone screen now.

I like to be able to glance at my Garmin while riding and as an ageing cyclist need reading glasses. My lenses needed trimming slightly to avoid interfering with road vision; provided you cut them cleanly they still adhere perfectly. Rest of cycling group interested.

I have quality lenses to attach these to, they are a waste of Money they just don’t stick edges don’t stick at all - actually worse when you add water as per the instructions.

Better than some similar lenses that are more expensive. Stick very well. Only problem is, not easy to cut and obtain correct shape.