[2porscheguy]

That's a good question RS!

In POAG (primary open angle Glaucoma) surgery is generally reserved for patients that don't respond well to meds alone....although this is changing as we speak, with the advent of newer surgical procedures being introduced.

In Closed or Narrow angle Glaucoma, surgery, which in this case is called a peripheral Iridotomy, is the immediate and often prophylactic treatment of choice.