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KMID : 0360220110520060709
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Journal of the Korean Ophthalmological Society
2011 Volume.52 No. 6 p.709 ~ p.715
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Clinical Validation of Visual Field Index in Glaucoma Patients with Central Visual Field Defects
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Park Ji-Hye
Yoo Chung-Kwon
Kim Yong-Yeon
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Abstract
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Purpose: To evaluate the glaucoma discrimination ability of visual field index (VFI), a new perimetric index of Humphrey field analyzer II, in glaucoma patients with central and peripheral visual field defects (VFD).
Methods: Humphrey visual field test and OCT were performed in 204 glaucomatous eyes and 70 healthy eyes. The associations of VFI with mean deviation (MD), pattern standard deviation (PSD), and average retinal nerve fiber layer thickness (RNFLT) were analyzed using Pearson’s correlation. The diagnostic abilities of the parameters were analyzed using the areas under the receiver operating characteristic curves (AUROC). The AUROC were compared between MD-matched patients with central VFD (at least one point with p < 1% within the central most 16 points of 30-2 SITA standard automated visual field) and peripheral VFD (VFD beyond the central most 16 points of 30-2 SITA standard automated visual field).
Results: The associations between analyzed parameters and VFI were statistically significant. The MD, RNFLT, age, intraocular pressure, and central cornea thickness were not different between the two groups (p > 0.05). The AUROC value of VFI was greater than those of the MD and average RNFLT but was not different from that of PSD (p = 0.332) in the central VFD group. However, there were no significant differences between AUROC value of VFI and those of other parameters in the peripheral VFD group (all, p > 0.05).
Conclusions: The results from the present study suggest that VFI may be more useful than MD in diagnosing glaucoma, especially in patients with central VFD.
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KEYWORD
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Mean deviation, Pattern standard deviation, Retinal nerve fiber layer thickness, Visual field index
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