Humphrey FDT is an AC-powered device intended to determine the extent of the peripheralvisual field of a patient. The device is intended to determine the amount of visual field lossin a patient, which can then be used to diagnose/track the progression of glaucoma andother eye diseases.
A mains electricity (AC-powered), automatically operated, diagnostic, ophthalmic instrument intended for assessing the extent of the patient's peripheral visual field. Small luminous points (spots) are automatically displayed in various random positions and patient response is automatically recorded. The print-out (chart) then shows the resulting curve of the visual field. Such types include Humphrey perimeters.