Humphrey Matrix Visual Field Instrument
5
Rev. D 08/21/06 PN 701692
FREQUENCY DOUBLING TECHNOLOGY (FDT) OVERVIEW
FDT
isolates a subset of low redundancy, retinal ganglion cell mechanisms in the magnocellular
(M-cell) pathway. These M-cells have large diameter fibers and comprise only 3% to 5% of all
retinal ganglion cells. The damage to these cells in the disease process is detected effectively
and efficiently by FDT. Refer to the Clinical Examples Reference Guide for more information.
Patient
Visor
Forehead
Rest
Calibration Cap,
covering Patient
Eyepiece
Patient
Response
Button
Содержание Humphrey matrix
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