You should have periodic EGDs... Esophago-gastro-duodenoscopies

Prevacid can be used, as can other PPIs indefinitely to treat GERD,
but, Barrett's esophagus can still form and when it does, the symptoms
go away. A small percentage of people with Barrett's progress to
esophageal cancer, generally considered not a good thing. The
possibility exists that calcium absorption is reduced, so a dexa scan
would be good. There is a proton pump mechanism in the eye, so a good
thing to do would be get regular eye exams. The Limited time
recommendation is due to the only available studies being done for a
limited time. In years to come, long term outcome data will let us
know.
David