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Abstract #15405 Published in IGR 1-3
Spatial relationship of motion automated perimetry and optic disc topography in patients with glaucomatous optic neuropathy
Bosworth CF; Sample PA; Williams JM; Zangwill LM; Lee B; Weinreb RNJournal of Glaucoma 1999; 8: 281-289
PURPOSE: To compare the spatial relationship of focal motion automated perimetry (MAP) visual field defect with focal defect in optic disc topography. METHODS: Patients (n=12) with focal MAP visual field loss and focal change in optic disc topography were studied. The MAP visual field was divided into 12 field zones representing retinal nerve fiber layer arcuate bundles. Zones of MAP loss ere related to rim area ratio (RAR), which was obtained by dividing the rim area, measured by the Heidelberg Retina Tomography (HRT; Heidelberg Engineering, Heidelberg, Germany), into 36 10° sectors and then dividing the area of each sector by the total rim area for each subject. RAR was compared to a normative database (n=76) to quantify change in optic disc topography. In these same patients, the spatial relationship between standard automated perimetry (SAP) and short-wavelength perimetry (SWAP) and optic disc topography was also assessed. RESULTS: Motion automated perimetry superior visual field zones 14 through 19 were most often associated with a reduction in RAR for inferior sectors 24 through 29, and inferior visual field zones 4 through 7 were most often associated with a reduction in RAR for superior temporal sectors 11 through 16. Similar spatial relationships were found between SWAP and SAP and the RAR. CONCLUSIONS: Focal MAP visual field loss and focal changes in optic disc topography are spatially related. This relationship is similar to that found between SWAP and SAP with optic disc topography. Focal thinning or notching detected by RAR analysis might be independent of the special functional test employed.
Dr. P.A. Sample, Department of Ophthalmology-0946, University of California, San Diego, La Jolla, CA 92093-0946; USA
Classification:
6.6.3 Special methods (e.g. color, contrast, SWAP etc.) (Part of: 6 Clinical examination methods > 6.6 Visual field examination and other visual function tests)
2.14 Optic disc (Part of: 2 Anatomical structures in glaucoma)
6.9.1 Laser scanning (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis)
