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Am J Ophthalmol ; 140(1): 165-6, 2005 Jul.
Article in English | MEDLINE | ID: mdl-16038674

ABSTRACT

PURPOSE: To quantitatively evaluate retinal nerve fiber layer (RNFL) thickness in the fellow eyes of normal-tension glaucoma (NTG) patients with unilateral visual field defect. DESIGN: Observational case-control study. METHODS: Twenty-nine NTG patients with unilateral visual field defect were enrolled in this study. All 29 fellow eyes showed normal visual field. Thirty-one normal eyes of 31 subjects served as controls. The RNFL thickness around the optic disk was determined using Fast RNFL thickness (3.4) of optical coherence tomography. Average and segmental (4 quadrants and 12 clock- hours) RNFL thickness measurements were compared among the three groups. RESULTS: RNFL thicknesses were significantly different among the three groups in the average, superior quadrant (11 and 12 clock-hour segments), and inferior quadrant (6 clock-hour segment) (P = .00, one-way ANOVA and Tukey's tests). CONCLUSIONS: RNFL thickness reductions are already present in the fellow eyes of NTG patients with unilateral visual field defect.


Subject(s)
Glaucoma, Open-Angle/diagnosis , Nerve Fibers/pathology , Optic Disk/pathology , Optic Nerve Diseases/diagnosis , Retinal Ganglion Cells/pathology , Vision Disorders/diagnosis , Visual Fields , Case-Control Studies , Diagnostic Techniques, Ophthalmological , Female , Humans , Male , Middle Aged , Tomography, Optical Coherence
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