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Oculus Centerfield 2

Oculus Centerfield 2

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Thanks to its ergonomic design, user-friendly program navigation and ease of operation, the Centerfield® 2 Perimeter has proven itself to be an invaluable instrument in the Occupational Health area. The unit performs static perimetry up to 70° eccentricity.  It also meets the requirements of the German Ophthalmological Society’s (DOG) Road Traffic Commission for conducting visual field testing in accordance with the regulations for the issuance of driver’s licenses and the Guidelines G25 and G41 issued by the German Institute for Occupational Health and Safety.

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Ergonomic Design

The self-contained design and light-shielded viewer allow examinations to be conducted in normally lit rooms.  Its robustness and light weight make the Centerfield® 2 Perimeter the ideal unit for portable use, which is often a necessity in the Occupational Health area.

Reliable Results

The results of the perimetric measurements are summarized in a clearly structured printout. Areas of abnormality can be quickly recognized and re-examination of these areas independent of the test point grid gives the diagnostic analysis even greater reliability.


Modern Connectivity

The Centerfield® 2 Perimeter can be operated via the USB port of a notebook or PC. Together with the supplied device software, this modern solution allows you to fully utilize all of the benefits of today’s IT systems, especially the network connectivity. This guarantees both safe storage of examination data and quick access to that data when needed.


The Examination Programs

The recommended series of pre-defined test programs provided for Centerfield® 2 Perimeter covers the examinations most frequently needed in practice. The “Driver’s License Regulations“ program permits occupational and company physicians to test the field of vision in accordance with applicable German regulations (FEV and amendments thereto) governing the issuance of driver’s licenses. The macula and glaucoma programs allow early detection of various retinal diseases.


The OCULUS Test Strategies

Threshold related - suprathreshold strategies have proven to be time-saving and efficient examination methods. The Centerfield® 2 Perimeter uses these strategies for all screening programs, including the Driver’s License eye exams. A variety of threshold testing strategies are available for measurement of the exact numeric values of the visual thresholds.


The OCULUS Test Point Grid

The patented projection method allows you to freely select test point grids on the Centerfield® 2. The central field of vision can be examined using functionally or orthogonally distributed test points. Grids such as the “FeV70” or “Esterman” are used for the periphery. This unlimited flexibility enables test grids to be modified if necessary.

SPARK Strategy

The SPARK examination strategy was primarily developed for Glaucoma patients and is available for all OCULUS perimeters. It is based on data from more than 90,000 perimetric diagnoses and allows a very fast, yet very precise measurement of the thresholds in the central field of vision. The modular configuration of the method makes it suitable for a variety of applications:

  • SPARK Precision (Optional software) is the full version. The complete examination of the field of vision of glaucoma patients takes only 3 minutes per eye. The greater stability of the results allows for much better progression analysis.
  • SPARK Quick is the strategy used for progression or screening examinations. The test takes just 1.5 minutes per eye.
  • SPARK Training is ideal for patient training. The 40 second measurement can also be used as a screening examination.

 The Spark strategy uses the correlation between different points in Glaucomatous visual fields to considerably expedite the examination.

Glaucoma Staging Program (GSP)

GSP analysis of a pre-perimetric examination finding


Threshold Noiseless Trend (TNT) Progression Analysis


TNT provides a quantitative, statistical analysis of the visual field examination results conducted over time. For follow-up purposes, the software uses the visual field results and patient's threshold values supplied by 30-2, 30x24 or 24-2 grids over the entire examination period.  TNT uses a specific filter to reduce the fluctuation range of the threshold values and to perform a consistent trend analysis. In conjunction with the fast SPARK strategy, the sensitivity of detecting progression of early stage glaucoma is greatly improved.


  • TNT creates a concise progression analysis report containing the most important parameters (MD increase, p-values, etc.).
  • TNT can differentiate between diffuse and focal progression based on the focusing index (FI) value.
  • TNT applies multiple statistical criteria to establish possible progression.
  • TNT displays the prognosis of the expected visual field for a patient age-group selected by the examiner.


TNT Display 


Perimeter bowl radius: r = 30 cm
Test point parameters: corresponding to Goldmann standard
Stimulus size: III
Luminance range: 0 - 318 cd/m² (1000 asb) luminance differences
Luminance increments: 0.1 log units
Speed: adaptive / fast / normal / slow / user-defined
Test point colors: white/blue
Eccentricity: 36°/70°
Ambient brightness: 10 cd/m²
Fixation control: CMOS camera, via central threshold, Heijl-Krakau method
Patient positioning: Depth-adjustable head rest. Optional: Chin rest with motorized height adjustment
Weight: 11.7 kg
Chin rest: 1.1 kg
Operating voltages: 100 V – 240 V
PC minimum requirements: CPU 750 MHz
Operating system: Windows 98 SE or higher
Arbeitsspeicher 256 MB
Graphics card: VGA 800 x 600
USB port
Static perimetry: Class strategy
Suprathreshold 2 –zone strategy
Suprathreshold 3-zone strategy
Suprathreshold quantity defects
Full (4-2) threshold strategy
Fast threshold 
Optional: CLIP strategy
Test point grid: At least 13 test point gridsAt least 13 test point grids
Kinetic perimetry: automatic;
choice of isopters, speed 2° per second (Goldmann standard) or user-defined
Included in delivery: Cover
Lens holder for trial lenses
Opaque occluder
Four trial lenses: +/- 1.0 sph. and +/- 3.0 sph.

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