If you have 70% cupping, or what we call a 0.7 cup to disc ratio, you
may simply be someone born with large cups, or you may have glaucoma.
You can't tell someone "You don't have glaucoma" just because he/she
has a normal pressure at one point in time.  We all have diurnal
variations...some of us have high IOPs early in the AM, some spike in
the late afternoon.  Maybe your doc just checked your IOP at your low
point of the day.  Also, some patients have "low-tension glaucoma" and
develop progressive optic nerve damage even with a normal pressure.
The only way to know is to observe for changes over time in both your
optic nerve appearance as well as a computerized visual field test.
Personally, I wouldn't have let you go for a full year.  I check most
of my glaucoma suspects every six months.  You should also have optic
nerve head photos or analysis done and measurements of your corneal
thickness.  If your doc doesn't have this technology in his office,
find someone who does, possibly a glaucoma specialist.  Good luck to
you.
--Rick Cohn, MD
Glaucoma specialist
Winter Park, FL