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Abstract #18467 Published in IGR 3-3
Localised changes in glaucomatous visual fields after trabeculectomy
Vuori ML; Vainio-Jylhä E; Viitanen TTActa Ophthalmologica Scandinavica 2001; 79: 468-471
BACKGROUND AND OBJECTIVE: Modern techniques of automated perimetry have shown that surgical reduction of intraocular pressure may have a beneficial effect on the glaucomatous visual field. The purpose of the present study was to analyze and quantify the changes in the visual fields of glaucoma patients after trabeculectomy. MATERIAL AND METHODS: Octopus visual fields of 27 glaucoma patients were analyzed. Change in visual field mean sensitivity (MS) was calculated to detect total field changes. A clinical and a statistical analysis of small clusters of test points were used to define whether local changes had occurred. RESULTS: MS in the operated eye improved significantly from 16.4 ± 5.6 to 18.2 ± 5.5 dB. The patients had on average 3.9 ± 6.2 clusters where the retinal sensitivity had improved at least 4 dB, and only 0.4 ± 0.9 clusters where sensitivity had deteriorated at least 4 dB after trabeculectomy. Seventeen patients had more improved than deteriorated clusters postoperatively. CONCLUSION: Statistically significant improvement was seen in MS, but improvement was also found in small local areas of the visual fields after trabeculectomy.
Dr M.L. Vuori, Department of Ophthalmology, University of Turku, Turku, Finland
Classification:
6.6.2 Automated (Part of: 6 Clinical examination methods > 6.6 Visual field examination and other visual function tests)
