AFAIK, there's no glass lens implant.

In the olden days, before my time, they used to make a big incision in
the eye to do cataract surgery.  Now they make a tiny incision, and
insert the lens rolled up in a little tube.  Obviously, you can't roll
up a glass lens.  Doing the big incision is much more risky and has a
much longer recovery time.  You may have difficulty finding a surgeon
with recent experience doing it this way.

I would advise working with your doctor to make sure you aren't allergic
to any lens to be used.

Note that I am a layperson who has had cataract surgery in both eyes,
but with little knowledge other than my own experience.