As we get older, our vision is the second thing to go (can't remember the first). Enhancing that vision, especially for fine details such as those made on ornamental lathes becomes quite useful.
MagEyes are useful for that purpose as they are head-mounted, and you can change what you're looking at without having to move the object (i.e., under an illuminated magnifier).
Disclaimer: eMail comments to me at OTBookOfKnowledge @ Gmail.com. The process of woodturning involves the use of tools, machinery and materials which could cause injury or be a health hazard unless proper precautions are taken, including the wearing of appropriate protective equipment.