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What is the VFI? “The VFI is a new global metric that represents the entire visual field as a single percentage of normal,” said Richard Madonna, O.D., SUNY State College of Optometry, New York. “It is based largely on the pattern deviation and weighs central points more than peripheral ones.”
Purpose: Visual field index (VFI) is a recently introduced summary parameter. Before it is widely adapted, it needs to be further characterized and compared with familiar indices used in glaucoma management, specifically mean deviation (MD).
The visual field index (VFI) is a new global metric that represents the entire visual field as a single number. It is estimated by calculating age corrected defect depth at the test points identified as significantly depressed in pattern deviation probability maps.
3 cze 2021 · Visual Field Index (VFI) One way to monitor progressive visual field loss is the visual field index. The VFI is more sensitive to changes in the central vision correlating with ganglion cell loss.
15 cze 2020 · Visual field (VF) testing, although sometimes described as “torturous” by our patients, can be gratifying (and important) to interpret as an ophthalmologist, especially when done systematically. This article provides quick pearls and a framework by which you can conquer interpretation of VFs and points you in the direction of relevant ...
15 lut 2013 · 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). The percentage value can be tracked over a series of tests and used as one indicator for progression.
21 cze 2013 · The Visual Field Index (VFI) is a relatively new summary measure that seeks to quantify glaucomatous damage in newer models of the The Humphrey Field Analyser. Visual fields with no discernable defect are scored 100 % with 0 % signifying perimetric blindness.
