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Abstract #9106 Published in IGR 5-2

The evaluation of retinal nerve fiber layer in pigment dispersion syndrome and pigmentary glaucoma using scanning laser polarimetry

Mocan MC; Bozkurt B; IrkeƧ M; Orhan M; Karabulut E
European Journal of Ophthalmology 2003; 13: 377-382


PURPOSE: To measure retinal nerve fiber layer thickness in patients with pigment dispersion syndrome (PDS) using scanning laser polarimetry, and to compare these measurements with those of normal subjects and patients with pigmentary glaucoma (PG). METHODS: Age-, sex-, and refractive error-matched subjects (18 patients with PDS, 18 patients wity PG, and 20 healthy subjects) were evaluated by scanning laser polarimetry (nerve fiber analyzer (NFA) GDx). The NFA did not have a compensator for corneal polarization. NFA measurements of patients with PDS and PG and healthy subjects were compared statistically using analysis of variance, Tukey multiple comparisons, chi-square and independent t-tests. RESULTS: The mean values for average thickness, superior and inferior maximum, superior and inferior average, ellipse average thickness, and superior integral, were found to be lower in patients with PDS (p < 0.02) and PG (p < 0.005) compared to normal subjects. The mean values for maximum modulation, superior ratio, interior ratio, and superior/nasal ratio in PDS were in between those of the PG and control groups (p > 0.05). Ellipse modulation was significantly lower in the PG group when compared to the other two groups (p < 0.03). CONCLUSIONS: Retinal nerve fiber loss is present to some extent in patients with PDS, and this loss is not age or sex dependent. Parameters of modulation might be more representative of significant damage to the nerve fiber layer.

Dr. M.C. Mocan, Department of Ophthalmology, Hacettepe University School of Medicine, Ankara, Turkey


Classification:

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)
9.4.3.1 Pigmentary glaucoma (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders > 9.4.3 Glaucomas associated with disorders of the iris and ciliary body)



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