Ok, a lot to think about.
If itīs true that lampworking emits no UV, then the ptygerium could be caused by something else. I talked to an optician used to work with the glassworks here in sweden, and he mentioned only didymium as a protection. I work with soft glass. He also mentioned that ptygerium could be caused by using contact lenses for too long.
well,I have to learn more about this, it seems like.
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