At the last quilt show I attended I saw a vendor selling a magnifier attached to glasses. They mounted the magnifier to their frame with your vision prescription. A light was available for it. It was EXPENSIVE but the vision thru them was crystal clear. I lusted for them, but way above my budget. Like (IIRC) around $600. This was an appliance originally used in dental offices. Can't for the life of me remember the name.