gama knife and eye pain

In 2009 may.I had a transphenoidal pituitary tumor surgery(as i lost my side vision) done .After that some
residual tumor
is left for which the doctor advised Gama knife
radiosurgery.For the last two years i was taking octreotide acetate injection as advised by my endocrinologist.
for controlling growth hormone.Recently I returned back to India my home country and stopped that
injection as it is too costly here and not covered by insurance.Here the doctors also advised for Gama knife radiosurgery.
Now my problem is left eye pain,pressurre in the eyelid,headache in left side.My left eye has grown bigger and bigger than
my right eye.Also my left eye does not close fully and water comes out.
I recently had my growth hormone test done and I have GH.
My question is that if Gama knife radiosurgery
  is done will my eye pain be lessened? and will it stop GH production?If GH secretion is stopped will it reduce the eye pain?
is the any connection to GH with eye pain?
I consulted the best eye doctor here and they told my eyes are perfectly fine,only thing is that left eye is bigger
than right(floppy or bulging eye).and prescribed one ointment and eye drop.
but my pain is not reduced.can my left eye be moved back to its original position after the surgery?
Is there any other treatment like medicine available for this?

please help