Review (4/5): I still have an almost whole bottle so I am pleased with that
I bought six months worth of these drops to get rid of some cataracts that had started according to my eye doctor. They cannot be seen with the naked eye, and I don't have problems seeing because of them. Nevertheless, I got concerned when I was told I have "senile cataracts" beginning to grow. I am using these proactively to stop the growth of the cataracts and hopefully reverse the situation. At this point, I don't know if they are working or not as I haven't been back to the eye doctor.
Usually they don't burn, but once in awhile they do burn a tad. I use two drops twice a day. Some people use one drop four times a day. I used to do it that way but it took up a lot of time. Also, I bought six boxes for six months worth but that ended on March 25th. I still have an almost whole bottle so I am pleased with that.