My close up vision is very important to me. It isn't always easy to get a magnifying glass or magnifying shop light into an area I need to see. When I need it, I need it.
So, I'm with CHUD on this one. Android, small parts that I work with when working on my 1967 Mustang or mainenance on our airplane are a real pain when I am wearing contacts and reading glasses. I just don't see as well with the reading glasses as I do when I remove my contacts and just use my own vision close up. At work, I also work on small connectors and components when I put together systems for my research. I usually have to make my own cables and do my own soldering. We do not have a technician, so I get to do my own. So, far. It just hasn't been worth it, maybe when I'm 60 and my close up vision is gone.