Another year has passed and it is time for your visual field test, a.k.a. âthe clicky testâ that frazzles many glaucoma patients and can feel like a waste of time. The staff at your eye doctorâs office reassures you that it is a necessary part of your exam and you cooperate to the best of your ability.maging of the optic nerve and surrounding tissues is an objective test that can also detect glaucoma damage and progression. This information can help your doctor make treatment decisions, and as the technology improves it will be even more useful. However, at this time it has not replaced the visual field test.