advertisement
Abstract #15401 Published in IGR 1-3
Usefulness of gaze tracking during perimetry in glaucomatous eyes
Kunimatsu S; Suzuki Y; Shirato S; Araie MNippon Ganka Gakkai Zasshi 1999; 103: 748-753
PURPOSE: To evaluate the usefulness of a new fixation monitoring system called gaze tracking in the perimetry of glaucomatous eyes. SUBJECTS AND METHODS: The authors studied the visual field of 106 eyes in 106 persons, comprising 74 eyes with open-angle glaucoma and 32 eyes with ocular hypertension. Perimetry was performed using a Humphrey Visual Field Analyzer 740/750 with a 302 full threshold program. They used two parameters for gaze tracking: the percentage of the time when the subject's eye deviated from the fixation target more than 3° (G3) and 6° (G6). These parameters were assessed in three groups: those with no visual field defect (group N), those with absolute visual field defect including the blind spot (group M1), and others (group M0). RESULTS: The values of G3 and G6 were significantly correlated with the fixation loss in groups N and M 0 (p < 0.01). These values were not significantly correlated with the fixation loss in group M 1 (p>0.1). When the fixation loss was less than 20%, G3 and G6 values were significantly higher in group M1 than in groups N or M0. CONCLUSION: Gaze tracking is a useful fixation monitoring system particularly in the presence of absolute visual field defect including the blind spot.LA: Japanese
Dr. S. Kunimatsu, Department of Ophthalmology, University of Tokyo School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655; Japan
Classification:
6.6.2 Automated (Part of: 6 Clinical examination methods > 6.6 Visual field examination and other visual function tests)
