3-D Hill of vision

This image shows the visual field in 3 dimensions. The hight is given by the defect depth (total deviation). The interpolated surface is shown in color. The colors correspond to the Color Defect Map.

The perspective is initially oblique from the front. It can be rotated and tilted using the arrow keys on the keyboard

Defect depth or total deviation are norm-related. A normal value has 0 dB. The normal 3D hill is flat -- Click here for more information about this value type, the meaning and interpretation

CONCLUSION: This image type shows the visual field in an impressive plasticity. The colors enhance this perception. There is no additional information compared to the 2-D representation and interpretation is complicated by the perspective distortion. The 3-D hill is especially useful to enforce the motivation of the patient by the impressive presentation.

Further information

In the literature, the hill is usually shown based on raw data and therefore higher in the center. As for the neccessity of color for a vivid presentation and the consistend use of color in the PeriData program (color only for norm-related values) it had to be deviated from this tradition.