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OCULUS Centerfield^® 2

Perimeter

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.

Threshold Noiseless Trend (TNT) Progression Analysis

TNT provides a quantitative, statistical analysis of the visual field examinations conducted over time. For follow-up purposes the software uses all visual field results taken over the entire observation period and takes the patient's threshold values into account obtained on the 30-2, 30x24 or 24-2 patterns. 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 in 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 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.