Well, at the range today I finally had to accept that I simply can't see a black front sIght clearly against a black target. Clear as a bell with reading glasses but then, of course the target is a blur. I know this issue has been discussed here before with some members strongly recommending certain vision aids. I don't remember what they were (I wasn't interested at the time) and I'm not finding anything via the search function. Any thoughts or experiences that would help me address this problem?