Purchase this article with an account.
Y-S Bee, MC Lin, YY Chen, SJ Sheu; Role of Frequency Doubling Technology in Optic Neuropathy . Invest. Ophthalmol. Vis. Sci. 2002;43(13):1801.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
Purpose: To evaluate the role of frequency doubling technology (FDT) in detecting neuro-ophthalmic visual field defects in comparison with conventional Octopus automated perimetry.Method: Fifteen eyes of fourteen patients including ten eyes of nine patients with optic neuritis and five patients with anterior ischemic optic neuropathy (AION) were collected. The visual field was assessed by both Octopus automated perimetry G1 and FDT full threshold N-30 at the first visit. The relationship between Octopus G1 mean defect (MD) and FDT N-30 MD was analyzed by Spearman correlation. The correlation between the total missed points (TMP) of Octopus G1 probability plot and TMP of FDT N-30 total deviation (P<0.5%, P<1%, P<2%, P<5%), as well as the correction between the missed points (MP) of G1 probability plot and MP of FDT N-30 total deviation dividing to three zone: upper half, lower half and central area (P<0.5%, P<1%, P<2%, P<5%) were analyzed by Spearman correlation. Results: MD of FDT N-30 showed significant correlation with MD of Octopus G1 (r=0.861, p<0.001). Total missed points (P< 5%) of FDT N-30 total deviation showed significant correlation with TMP (P< 5%) of Octopus G1 probability plot (r=0.694, p=0.007). Missed points of the three zones in FDT N-30 total deviation (P<5%) also showed significant correlation with MP of each zone in Octopus G1 probability plot (P<5%): upper half (r=0.661, p=0.004), lower half (r=0.677, p=0.03), central area (r=0.977, p<0.001). Conclusion: Frequency doubling technology N-30 took less time to perform and could be useful in detecting the visual field of patients with optic neuritis and AION in comparison with Octopus perimetry G1.
This PDF is available to Subscribers Only