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Humphrey field analyser (HFA) is a tool for measuring the human visual field that is commonly used by optometrists, orthoptists and ophthalmologists, particularly for detecting monocular visual field.
25 sie 2023 · This article discusses the process of perimetry and the interpretation of the visual field printouts (Humphrey visual field Analyzer). The history of visual field analysis dates back 2000 years, when Hippocrates first reported a case of hemianopsia.
15 lut 2013 · On the Humphrey Field Analyzer, the visual field index (VFI)—a value similar to the MD—was added to the printout several years ago. The VFI is a staging index for the total amount of field loss. It is reported to be less sensitive to cataracts. 1 Values range from 100% (normal) to 0% (perimetrically blind).
Use this order to interpret your Humphrey visual field every time: Confirm it’s the right patient with name and date of birth; Confirm it’s the right/left eye; Look at the reliability indices; Look at the pattern; Look at the GHT, mean deviation, VFI, and pattern standard deviation; Compare to the previous visual fields
15 cze 2020 · Look for a cluster of two or more defects, and look at the summary data, including mean deviation, pattern standard deviation, visual field index (VFI) and the glaucoma hemifield test. (EyeWiki does a great job of simplifying this.) It’s also important to identify any VF correlation with a structural defect (on the opposite side of the nerve).
At the May 2009 annual meeting of the Association for Research in Vision and Ophthalmology in Ft. Lauderdale, Fla., several research groups investigated the clinical utility of the new parameter—the visual field index (VFI)—to detect progression of the visual field over time. What is the VFI?
3 cze 2021 · This article focuses on reviewing the meaning of indices and markers on a Humphrey Visual Field so we can better determine reliability and gain confidence in understanding our patient’s visual field loss. Let’s start from the top, and work our way down to the bottom.
