The Humphrey Visual Analyser is one of the "gold standard" methods of assessing patients' visual fields.  The test allows different strategies to "screen", e.g., C40 or "analyse" in more depth, e.g., SITA 24-2. In addition, the Estermann visual field test for drivers is carried out on the Humphrey. 

Visual fields are an important part of the diagnostic protocol for a wide range of eye and neurological conditions. This test will invariably be carried out as part of adult eye examinations in all but a few cases at Barnard & Levit unless there are clinical indications to include it, Visual fields can be done on children as young as 5 years.

Humphrey Visual Field Analyser