As I have gotten older, eye sight is not what it use to be. Shooting my pistols has become a real challenge even with by progressive lens glasses. Just could not get the right head tilt, sight alignment to make it work. I talked to my optometrist about making a set of prescription shooting glasses. Yes it can be done but the cost was approaching $300. My Wife, sensing another high $$ hobby expenditure( in her opinion only), started doing a little Google research. She found and ordered me a pair of glasses that has adjustable focus for each eye. I was a little skeptical that this would even work. Since she invested her time and money the least I could do was run a test. First up was my CZ75 9mm. I adjusted the focus until the front sight was quite clear and the rear only slightly out of focus. Clearer then both have been in years. My groups really did tighten up. Next up was by Buckmark with a red dot. Decided to push it, so did this from the bench at 50 yrds. First thing I noticed was the red dot was actually a red dot and not a red blob! My groups were actually respectable. All in all, I am quite pleased with by Wife’s $40 purchase. If interested, she ordered them from a company call borelsport.com. Happy Shooting.