there are multiple thing to look at when diagnosing glaucoma
the chief amongst them being the intra ocular pressure, the optic nerve
dimensions and morphology, the central corneal thickness, gonioscopy
and the perimetry
. A decision whether you have glaucoma or not can only be taken when looking at all these things together.
If you are too anxious about your glaucoma and the perimetry is showing a blind spot
enlargement, then maybe you could get an OCT done. This gives more objctive measurements as compared to perimetry and is more accurate for follow up studies. pls remember OCT by itself is not sufficient for diagnosing glaucoma but is merely a more sensitive tool.
hope this helps