Humphyery Visual Field

 

Humphrey field analyzer (HFA), is a tool for measuring the human visual field, it is used by ophthalmologists, particularly for detecting monocular visual field. The Analyzer projects a series of white light stimuli of varying intensities (brightness), throughout a uniformly illuminated bowl. The patient uses a handheld button that they press to indicate when they see a light. HFA assesses the retina’s ability to detect a stimulus at specific points within the visual field.