OCULUS Centerfield® 2
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.
Functions
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.
Software
Perimetry-Software
Threshold Noiseless Trend (TNT) Progression Analysis
SPARK threshold strategy
Glaucoma Staging Program (GSP)
- 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 focality 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.
- SPARK Precision (optional software) is the full version of SPARK. The complete visual field examination of glaucoma patients takes only 3 minutes per eye. The greater stability of the results allows for more sensitive progression analysis.
- SPARK Quick is used for follow-up or screening examinations. The test takes just 90 seconds per eye.
- SPARK Training is ideal for patient training. The 40 second measurement can also be used as a screening examination.
The GSP software places examination findings into visual field classes (normal, glaucomatous, artifactual and neuro) based solely on their appearance. In addition, risk classes (normal, suspect, pre-perimetric, early stage, moderate and severe) are also assigned to findings that are classified as normal or glaucomatous. The evaluation results are presented in intuitive green-yellow-red color coding.
The striking novelty of the GSP is its ability to detect subtle changes in the visual field associated with early stage glaucoma. Findings of suspect and pre-perimetric risk classes may contain reductions in the visual field that cannot be readily seen by the examiner. They usually remain undetected also by standard perimetric indices.
The Glaucoma Likelihood Index (GLI) summarizes the results of the GSP classification into a single parameter presenting a value between 0 (normal) and 5 (severe glaucoma).
The Glaucoma Staging Program (GSP) is available for OCULUS Twinfield® 2, Centerfield® 2 and Easyfield® perimeters. This upgrade is available for the existing units.
Title
Description
FAQ
Technical Data
Programs | Pre-defined glaucoma, macula, neurological and screening tests; user-defined tests |
Strategies | Threshold strategies: OCULUS Fast Threshold, Full Threshold (4-2), CLIP Optional: SPARK strategy Age-adapted supra-threshold screening (2-zone, 3-zone, quantify defects) |
Test patterns | Orthogonal patterns (30-2, 24-2, 30 x 24, 10-2) Physiological patterns (Area 1-8), Esterman, Profile, customised patterns |
Stimulus size | Goldmann III |
Stimulus color | White / Blue |
Stimulus duration | 200 ms / User-defined |
Examination speed | Adaptive / Slow / Normal / Fast / User-defined |
Stimulus luminance range | 0 – 318 cd/m² (0 – 1 000 asb) |
Background luminance | 10 cd/m² (31.4 asb) |
Background colors | White / Yellow |
Maximum eccentricity | 36° / 70° (with fixation shift) |
Fixation control | CMOS camera, through central threshold, Heijl-Krakau (over blind spot) |
Reports | Glaucoma Staging Program (GSP), Progression report for Threshold Noiseless Trend (TNT) |
Kinetic Perimetry | Strategies: Automated tests along meridians with freely selectable density up to 35° Stimulus speed: 2°/ s (Goldmann-Standard) or user-defined |
Bowl radius | r = 11.8 in |
Patient positioning | Depth-adjustable headrest, optional motorised chinrest |
Weight | 25.8 lbs; chinrest: 2.4 lbs |
Operating voltage | 100 – 240 V |
Operating system | Windows® XP or above |
Interface | USB |
Included in delivery | Cover, Lens holder for trial lenses, Opaque occluder, Four trial lenses: ± 1.0 sph. and ± 3.0 sph. |
Contact us!
Request a quote or contact us if you need further information.
Request a quoteContact requestHotline
Questions?
Get in touch with us.
Tel. +1 888 284-8004