The gold standard visual field test for driving is the Esterman. This is done with both eyes open and concentrates mainly on your horizontal visual field. (This is different to the Glaucoma Visual field test which is done with one eye covered and measures the whole of your visual field).
The DVLA request certain people (including those with Glaucoma) to have regular Esterman Visual Field tests (usually every 3 years).
Unfortunately, rather than allowing a patient to have this done in a small local practice, the DVLA have recently awarded the national contract for these tests to a large optical company. At Norman Prince Opticians we can still perform this test for you privately for peace of mind.