On Sep 21, 5:32 am, Jim Wilkins wrote:
On Sep 20, 11:35 pm, Joe Pfeiffer wrote:

...
I didn't spend much time looking at Zenni, but neither of the magic
phrases "safety glasses" nor "Z87.1" seem to appear in the
descriptions of their prescription goggles.

Bifocal safety goggles with small magnifiers at the bottom are
available for around $10-$12 in welding stores. The best machining
arrangement for me is normal safety glasses plus an Optivisor set high
to act like upside-down bifocals. This keeps my neck at a more
comfortable angle when I lean over the machine to watch the threading
tool, etc.

jw

Part of my problem is the fact that I've had three disc fused in my
neck so upward mobility is a bit limited. I have regular bifocal
safety glasses but they force me into some uncomfortable positions
when running my lathe, plus I have to get to close to be in focus. I
have read that "computer" glasses have a different focal point,
something like 21" to 29" where regular reading glasses are 16" to
22". I've already raised my lathe 3" to cut back on the back strain
from leaning over the machine. Thanks for all of y'all suggestions!