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[Better evaluation of HRT (Heidelberg Retina Tomography) images by 3-dimensional display].

BACKGROUND
The Heidelberg retina tomograph (HRT) is routinely used for the analysis of the structures of the eye ground (glaucoma diagnosis). The Dresden 3D-display, developed by the Technical University Dresden, is an autostereoscopic display which facilitates the three-dimensional presentation of geometrical data. The aim of this study was to test whether the spatial presentation improves the precision of measurements.


METHODS
Out of the patients who attended our hospital for glaucoma treatment within the past 3 years, 17 (9 women and 8 men) were chosen on grounds of a long follow-up time. In addition the patients had to have had at least 4 HRT examinations (mean: 5.29). The patients data was explored in three ways: 1. regular HRT examination, 2. manual follow-up HRT examination and 3. examination with the Dresden 3D-display.


RESULTS AND CONCLUSIONS
The measurements performed with the Dresden 3D-display showed a significantly higher precision compared to traditional HRT measurements. With spatial presentation a better assessment of the measured HRT data is possible.