I had SLT a few years ago as my pressures were in the high 20's . An easy process done in a few minutes. My pressures dropped within days and settled at around 12/14 ever since. I later had Cataracts removed which had the additional benefit of maintaining low pressures. Ganfort drops had worked well for me for years - then no more. Avoid Azarga as can cause palpitations and severe problems if have a heart condition.