OCULUS Smartfield

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.