Understanding Visual Fields, Part II; Humphrey Visual Fields
In this article, we will discuss automated perimetry and different test strategies. Although different types and brands are available, the Humphrey Field Analyzer™ is one of the most commonly used automated, computerized static perimetry devices and will be highlighted in this article. Similar to Goldmann perimetry, it uses 31.5 apostilb background illumination and a stimulus size III (with the capability of changing size from I to V). 1 During the test, the intensity of the stimulus changes depending on the patient's response. However, the stimulus size remains the same throughout the test.