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Humphrey FDT Visual Field Instrument

ProductsHumphrey FDT Visual Field Instrument
Company Carl Zeiss Meditec, Inc.
Item Humphrey FDT Visual Field Instrument
Features Innovative Technology
  • The Humphrey FDT with patented WelchAllyn Frequency Doubling Technology isolates a subset of 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 of these cells in the disease process makes FDT efficient and effective for the detection of visual field loss.
Quick Testing Times:
  • With supra-threshold screening tests in only 40 seconds, the FDT enables efficient screening for all patients. Full threshold testing in under 4 minutes.
Easy to Use
  • User-friendly, 3-touch operation does not require any special training. No instrument or patient set up needed.
Clinically Validated
  • World-class validation with 3 years of comprehensive clinical trials. Large age-related normative database.
  • No instrument or patient set-up needed.
  • The FDT weighs only 19 pounds and is compact enough to fit anywhere in your practice, even in the pre-test area.
Description FDT is a breakthrough in visual field testing that's so efficient it can even be used in pre-test. Introducing FDT, the first visual field instrument that's simple enough, fast enough, and compact enough to be used even in pre-test. Affordably priced FDT has years of research and clinical trials behind it to validate performance. The instrument produce screening results in only 45 seconds and full threshold results in under 4 minutes per eye. Weighing only 19 pounds, FDT is the most portable and user-friendly automated visual field instrument ever created.
Humphrey's FDT (Frequency Doubling Technology) Visual Field Instrument delivers clinically validated results efficiently in a pre-testing environment at an affordable price.
Info Carl Zeiss Meditec, Inc.Call Carl Zeiss Meditec, Inc. to buy products (US and Canada only; other locations use number below) USACanada1-866-407-6044

Customer Service: 877-486-7473
Web site:

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