Humphrey Field Analyzer 3

Reduce testing time. Increase insight into glaucoma.

ZEISS Humphrey Field Analyzer

  • SITA Faster
  • 24-2C
  • Guided Progression Analysis

Threshold testing is faster than ever with SITA Faster 24-2

SITA Faster 24-2 improves clinical workflow and patient satisfaction with the fastest test time in HFA threshold testing. Approximately 50% faster than SITA Standard, SITA Faster 24-2 is also about 30% quicker than SITA Fast, yet offers the same reproducibility.

The animation shows typical test image ranges in minutes (mean +/- std. dev.)1

Tracking rate of progression more often in less time with SITA Faster

Prof. Anders Heijl, one of the inventors of SITA algorithms and a pioneer of computerized perimetry, explains why SITA Faster is on its way to becoming the new gold standard in visual field testing.

…the accuracy of the precision of SITA Faster should be the same as with SITA Fast… we consider the data between SITA Fast and SITA Faster to be completely interchangeable

Prof. Anders Heijl

Lund University, Sweden

The Evolution of Perimetry

As the engine driving ZEISS HFA, SITA has come a long way since it was first developed for Humphrey Field Analyzer. Today, the innovation first designed to optimize visual field testing is doing that and much more, for both doctors and patients. This video documentary narrated by the creators of the SITA algorithm, Prof. Anders Heijl and Prof. Boel Bengtsson, goes over the rich history and the current ambition of the ever evolving SITA.

Illustration of an eye with the ten additional points for central visual field thanks to the the new SITA Faster 24-2C test.
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Minimize time. Maximize information.
New SITA Faster testing strategy.

Reduce testing time by up to 50% with SITA Faster 24-2 threshold testing. The new SITA Faster 24-2C test adds ten additional points for central visual field. And the points selected cover the areas that are known to be susceptible to glaucomatous defects.

Obtain more information in the central visual field

New SITA Faster 24-2C adds ten test points to the 24-2 pattern, which were selected to examine areas along physiologically relevant nerve fiber bundles known to be susceptible to glaucomatous defects.

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SITA Faster with 24-2C: A winning combination

Dr. C. Gustavo De Moraes, an expert in structural and functional changes in glaucoma, explains how the SITA Faster 24-2C testing paradigm helps detecting early macular involvement in the central field defects and how this new test can help elevating glaucoma practice.

There is compelling evidence that even in early glaucoma cases, the macula may be affected, but you need to use an adequate test to make sure that damage is real.

Dr. C. Gustavo De Moraes

Columbia University, New York
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Informing your decision-making with GPA

Guided Progression Analysis (GPA™), is a function of HFA3 that allows to detect and assess changes in glaucoma progression using mixed SITA tests taken on any HFA instrument.

GPA adds value to your practice

Guided Progression Analysis (GPA) provides an overview of the patient’s entire visual field history, streamlines workflow and can improve clinical confidence. GPA simplifies and standardizes analysis of changes in glaucomatous visual fields. It highlights any changes from baseline that represent larger than expected clinical variability and provides plain-language messages whenever changes show consistent and statistically significant loss.

Visual Field Index™ (VFI™> ) Trend is a regression analysis of the VFI values. It plots visual field loss against the patients' age, as well as rate of progression.
Glaucoma Change Probability Map is designed to identify progression events in consecutive visits at individual test points.
GPA Alert displays a plan language message about the likelihood of disease progression.
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Leveraging GPA for Glaucoma Management and Improved Outcomes

April Jasper, OD and Robert Fechtner, MD

A peer perspective

Listen to real world experiences from your peers on various aspects of how technologies have supported in improving patient education, compliance, management over time, and overall vision preservation.

Specifications HFA3





Test Specifications
Maximum temporal range (degrees)


Stimulus duration

200 ms

Visual field testing distance

30 cm

Background illumination

31.5 ASB   

Threshold test library
24-2, 30-2, 10-2, Macula
60-4, Nasal step
Threshold test strategies
SITA Standard, SITA Fast, SITA Faster, Full Threshold, FastPac
Suprathreshold test library
C40, C76, C80
C64, C-Armaly
Peripheral test patterns
Suprathreshold test modes
Age corrected
Threshold related, Single intensity
Specialty test library
Social Security Disability, monocular, binocular
Esterman monocular, binocular, superior 36, 64
Kinetic testing
Custom Kinetic testing
Custom Static testing

SITA Faster: A new time-saving visual field threshold testing strategy

Download a Multicenter Clinical Study

Learn about design of the new SITA Faster algorithm and a multi-center clinical validation in the study by Anders Heijl, Vincent Michael Patella, Luke X. Chong, Aiko Iwase, Christopher K.Leung, Anja Tuulonen, Gary C. Lee, Thomas Callan, Boel Bengtsson.

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  • 1

    Heijl A1, Patella VM2, Chong LX3, Iwase A4, Leung CK5, Tuulonen A6, Lee GC2, Callan T2, Bengtsson B7. A new SITA perimetric threshold testing algorithm; construction and a multi-center clinical study. Am J Ophthalmol. 2018 Oct 15. pii: S0002-9394(18)30592-0. doi: 10.1016/j.ajo.2018.10.010. [Epub ahead of print]