I just received a diagnosis of advanced glaucoma.I went in for an exam because of what felt to me like "shadowy" vision. My visual acuity is 20/20 so I thought my eyes were just tired or getting a little older. I am 43 years old. I failed a monocular visual field test miserably. My C/D ratios are .8 and .9. I have an appt. with a specialist at Mayo Clinic but am scrambling to make sense of this. What can I expect? I don't want to go blind!!!!