Humphrey FDT
Expanding your field of vision ZEISS Humphrey FDT

Humphrey FDT

  • Highlights
    Humphrey FDT 400

    Humphrey FDT - Frequency Doubling Technology for efficient visual field loss detection

    Clinically validated

    The Humphrey FDT® is ideal for clinics desiring to identify patients in need of ophthalmological referral. It has been clinically validated in more than 170 peer-reviewed publications.

    Easy to operate and interpret
    The FDT is optimized for use in both ophthalmological and non-ophthalmological settings and
    may be operated by healthcare workers having little or no specialty training in ophthalmology.

    • Patients may be tested using their own glasses, no requirement for trial lenses or eye patches1
    • Short test: ~ 40 seconds per eye
    • Simplified interpretation of results
    • Large, age-related normative database
    • Compact design that fits anywhere in your practice
    • Easy and intuitive operation for users of any level of experience
    • Dependable performance in ambient light
    • Convenient low-cost, built-in printer*

    1Trial lenses are required beyond ± 3 diopters for the Matrix and beyond ± 7 diopters for the FDT.
    *FDT does not include electronic connectivity.

  • Technical Data
    Test Specifications

    Maximum temporal range (degrees)


    Stimulus duration


    Visual field testing distance


    Background illumination

    100 cd/m2
    Threshold test libraries C-20, N-30
    Threshold test strategy MOBS
    Screening test libraries C-20, N-30
    Screening test modes Age corrected
    Fixation control
    Heijl Krakau blind spot monitor
    Operator interface (display) LCD
    Stimulus Frequency doubling
    Stimulus sizes 10°
    Printer Thermal printer


    17'' (43 cm)


    10'' (25 cm)


    19'' (48 cm)


    19 lbs (8.6 kg)
    Electrical requirements 100-120 V, 50/60 Hz
    230 V, 50/60 Hz
    Standards Meets UL, CSA, and CE standards
  • Services
    Customer Care

    Customer Care

    Every facet of Customer Care at ZEISS is designed to protect your investment in your equipment. Whether it is a high-end surgical microscope, an ophthalmic laser, diagnostic equipment, or radiotherapy system, we provide timely, responsive services through a national network of highly skilled technicians.

    Our dedication to providing the highest quality of customer care is reflected by the fact that our customers consistently rank us superior in terms of their satisfaction with our performance.

  • More Information

    Detect vision loss from ocular diseases Humphrey FDT Perimeter

    Simple, Reliable, Proven

    Page(s): 6
    File size: 699 kB 



    Humphrey FDT Model 710

    User Manual

    Page(s): 54
    File size: 2,324 kB