Zeiss Humphrey matrix User Manual page 22

possible. ZEST is similar to SITA used on the Humphrey Field Analyzers, but differs in the specific
algorithm details.
The 24-2 (55-point) and 30-2 (69-point) FDT full threshold tests are central 30 degree visual field
tests for use in general visual field testing and glaucoma management. These tests also provide
a Glaucoma Hemifield Test that provides a plain language interpretation of the visual field results
based on an asymmetry analysis between test locations in the upper vs. lower hemifield to
detect glaucoma.
Glaucoma Hemifield Test (GHT) messages
Outside normal limits
Borderline
Borderline - General reduction of sensitivity
General reduction of sensitivity
Abnormally high sensitivity
Within normal limits
The 10-2 (44-point) FDT full threshold test is a central 10 degree visual field test for use with
retinal disease (AMD, Diabetic Retinopathy) and end-stage glaucoma. The Macula (16-point) FDT
full threshold test is a central 5 degree visual field test subset of the 10-2 test.
Mean Deviation and Pattern Standard Deviation (MD & PSD) are global statistical indices
calculated from points over the entire visual field for the threshold tests. These indices reduce
the individual threshold scores to a single number to provide overall information about the entire
visual field. The magnitude of the MD & PSD values are directly correlated to the Humphrey Field
Analyzer indices.
18 Humphrey Matrix Visual Field Instrument
Rev. D 08/21/06 PN 701692