Title: Correlation of Asymmetry of Visual Field Loss With Optic Disc Topography in Normal-Tension Glaucoma
Abstract: <h3>Objective:</h3> To compare the differences in optic disc configuration with different stages of visual field loss in normal-tension glaucoma. <h3>Design:</h3> Interocular pairwise comparisons. <h3>Setting:</h3> Glaucoma clinic of a teaching hospital. <h3>Patients:</h3> Thirteen patients with normal-tension glaucoma and asymmetric visual field loss of at least 2.5 dB in the mean defect of the visual field indexes. <h3>Interventions:</h3> Areas under the optic disc profiles mapped from values for radial sections of the optic disc measured at intervals of 30° and expressed as percentages of the area of a rectangle were obtained from stereophotographs with a computerized image analysis system. Visual fields were tested with automated perimetry (OCTOPUS), using program G1. <h3>Main Outcome Measure:</h3> Correlation analyses between the interocular differences in the areas under the optic disc profile and the interocular differences in the visual field indexes. <h3>Results:</h3> The correlation coefficients between the interocular differences in mean defect and those of the area under the optic disc profile in the superior to temporal sections ranged from −.71 to −.61 (.007<<i>P</i><.028). The interocular differences in loss variance correlated with the differences in the area under the optic disc profile in the superior section (<i>r</i>=−.61,<i>P</i>=.0252). <h3>Conclusion:</h3> The differences in visual field loss between the two eyes in normal-tension glaucoma appear mainly to reflect morphometric changes in the superior half of the optic disc.
Publication Year: 1994
Publication Date: 1994-03-01
Language: en
Type: article
Indexed In: ['crossref', 'pubmed']
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Cited By Count: 7
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