Original ArticlesIntraocular pressure and progression of glaucomatous visual field loss☆
Section snippets
Patients and methods
patients with glaucoma who met the inclusion and exclusion criteria (Table 1)were recruited on a consecutive basis from the practice of one of us (R.P.L.) and from the Eye Care Centre of the Queen Elizabeth II Health Sciences Centre. This study was approved by the Queen Elizabeth II Health Sciences Centre Ethics Committee. The nature of the procedures was fully explained to each subject.
All patients first underwent a complete ophthalmologic examination. When both eyes of one patient were
Results
The study population consisted of 113 eyes of 113 patients, of whom 55 were men and 58 were women. The mean (± SD) age at the beginning of the study was 61.4 ± 13.1 years (range, 17 to 89 years). The patients were followed for a mean (± SD) period of 4.6 ± 0.9 years (range, 2 to 6 years). The mean (± SD) number of visual field examinations (conventional and high-pass resolution perimetry) and intraocular pressure measurements was 10.1 ± 2.4 (range, 5 to 13). The distribution of the number of
Discussion
Our study showed that progression of visual field damage in glaucoma, determined by conventional and high-pass resolution perimetry, occurs over a wide distribution of intraocular pressure values. We could not find significant differences in the mean intraocular pressure during the follow-up between stable and progressing glaucoma patients using either perimetric technique.
Some patients in our study had visual field progression with either technique with mean intraocular pressure levels as low
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This study was supported by grant MT-11357 from the Medical Research Council of Canada, Ottawa, Ontario, Canada.