Abstract
In the follow-up of patients with chronic open angle glaucoma, a quantitative comparison of visual fields is important. In order to make such comparisons, a knowledge of the short-term and long-term fluctuation of the differential light threshold is necessary. This study describes a method for evaluating the individual components of variance of the retinal sensitivity. The components have been weighted and statistically tested. The studies were carried out, predominantly in patients with glaucoma and glaucoma suspects, and the long-term fluctuation was highly significant in these groups. The long-term fluctuation was predominantly homogeneous in all test locations tested which means that the long-term fluctuation of the individual test locations, in contrast to short-term fluctuations, is usually of equal size and in the same direction.
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References
Bebie, H., Fankhauser, F. and Spahr, J. Static perimetry: accuracy and fluctuations. Acta Ophthalmol. 54: 339–348 (1976).
Bebie, H. and Fankhauser, F. Program Delta. Interzeag AG, Rietbachstr.5 CH-8952, Schlieren (1981).
Drance, S. M., Berry, V. and Hughes, A. Studies of the effects of age on the central and peripheral isopters of the visual field in normal subjects. Am. J. Ophthalmol. 63: 1667–1672 (1976).
Flammer, J., Drance S. M., Jenni, A. and Bebie, H. The Octopus program JO and STATJO, a special program for clinical investigation of the visual field. Can. J. Ophthalmol. 18: 115–118 (1983)
Flammer, J. and Drance, S. M. The effect of a number of glaucoma medications on the differential light threshold (to be published).
Heilmann, K. Augendruck, Blutdruck und Glaukomschaden. Buecherei des Augenarztes, Vol. 61,72 Stuttgart, Ferdinand Enke (1972).
Holmin, C. and Krakau, C. E. T. Automatic perimetry in the control of glaucoma. Glaucoma 3: 154–159 (1981).
Jenni, A., Flammer, J., Funkhouser, A. and Fankhauser, F. Special Octopus software for clinical investigation. Doc. Ophthalmol. Proc. Series 35: 351–356 (1983).
Werner, E. B. and Drance, S. M. Early visual field disturbances in glaucoma. Arch. Ophthalmol. 95: 1173–1175 (1977).
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© 1983 Dr W. Junk Publishers, The Hague
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Flammer, J., Drance, S.M., Schulzer, M. (1983). The Estimation and Testing of the Components of Long-Term Fluctuation of the Differential Light Threshold. In: Greve, E.L., Heijl, A. (eds) Fifth International Visual Field Symposium. Documenta Ophthalmologica Proceedings Series, vol 35. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7272-8_54
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DOI: https://doi.org/10.1007/978-94-009-7272-8_54
Publisher Name: Springer, Dordrecht
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