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S. Hashimoto, C. Matsumoto, U. Schiefer, J. Paetzold, E. Krapp, B. Selig, Y. Shimomura; The Evaluation of Fully Automated Kinetic Perimetry With Computur Simulated Virtual Patients. Invest. Ophthalmol. Vis. Sci. 2008;49(13):1072.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate our fully automated kinetic algorithm (Program K) using computer- simulated virtual patients.
Our new kinetic algorithm assesses the abnormality of isopter patterns using the external angles of patient response points. In this study, we tested this algorithm on a simulation computer program for training Octopus kinetic perimetry (K-Train) developed by Tuebingen University. First, one hundred eyes with visual field (VF) loss results of various origin were obtained by Goldmann manual kinetic perimetery (MKP) and were then digitized in K-Train. Next, Program K was applied to virtual patients by using K-Train. VF loss was assessed by using the following stimulus characteristics: V/4e, III/4e, I/4e, I/3e, I/2e, I/1e and a target speed of 3 degrees/sec. The results of Program K were compared with those of the digitized Goldmann MKP. In order to compare their location and size, the isopters of the digitized Goldmann MKP and Program K were then superimposed. The area of intersection could then be expressed as a percentage of the union area. The area and position of the isopters for a defined stimulus condition were compared between methods. Test duration was also evaluated.
Our results indicated that the isopter shape and size of Program K were comparable to those of digitized Goldmann MKP. The ratio of intersection area to union area for each isopter was 84 % (V/4e), 83 % (III/4e), 78 % (I/4e), 71% (I/3e), 60 % (I/2e) and 50% (I /1e). The average ratio of intersection area to union area of all isopters was 71%. The average examination duration was 18.1±3.2 minutes for Program K.
Program K was shown to be a useful tool for assessing a variety of visual field defects on computer-simulated virtual patients.
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