Figure 8

Block diagram of the algorithm proposed by the authors. The patient undergoes a fundus examination with the use of a tomograph and their visual field is measured with a perimeter. Then, the significance and correlation of the features obtained are calculated, thereby forming three classes. They are the basis for proposing a new analysis algorithm. After automatic determination of the layers RPE, ILM, RNFL and the cup and disk, the features w _g (1), w _g (2) and w _g (3) are determined. In the final stage, the proposed BGA ratio and correlation with results obtained from perimetry are calculated.