When visiting a touring exhibit of Vatican museum treasures, my mother pointed at a garment with very fine embroidery. She told me that the artists who made such garments could only make one in their entire life, because working on something so minutely detailed caused blindness.
This struck me as odd, but recently I rediscovered this claim in an article about rotoscoping films:
I don’t know if you’ve ever seen those incredibly detailed Chinese tapestries that they made in the monasteries generations ago. They finally stopped making them because the artisans would go blind
Is there any truth to this? I couldn't find any articles online by doing some basic searches for textile or tapestry and blindness. I also find it hard to believe that this kind of work would actually make someone blind.