Intraocular pressure too low after trabeculectomy

I had a trabecelectomy 3 months ago, 3 stitches were lasered afterwards and
my pressure was low, but not too low..since i lost considerable vision in
that eye, my doctor was satisfied..However, the pressure has gone too low and
he is trying a pressure patch, otherwise, suggests surgery to add another
stitch.. Any input??or similar experiences?? I really dont want another
surgery..