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LC Chou, SJ Sheu, YY Chen, JF Chen, TT Wu; Frequency Doubling Technology Perimetry in Rhegmatogenous Retinal detachment . Invest. Ophthalmol. Vis. Sci. 2002;43(13):636.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To evaluate the role of frequency doubling technology perimetry (FDT) in functional reserve assessment of rhegmatogenous retinal detachment (RRD). Methods:FDT using full-threshold C-20 mode was performed in patients with RRD before operation and 3, 6 months after operation. The fundus was scored by the extent of disease on each quadrant (central 20 degree visual angle) and macular area (central five degree visual angle). Then, the retinal scores were compared with the abnormal points scored by different-level quantificaiton on total deviation plots in FDT C-20 full-threshold mode using Spearman's rank correlation method. Pre-operative and post-operative mean defect (MD) changes in FDT C-20 full-threshold mode were compared by paired T-test (one-tail). Other correlating factors, such as visual acuity and duration of RRD before operation, were also analyzed. Results:Thirty-nine cases with anatomical success were collected.. The correlation was statistically significant between the extent of retinal involvement and the total visual field change (R=0.474, P=0.002). The mean MD on FDT was significantly improved at the three-month follow-up compared to the mean MD on pre-operative FDT (-8.16±5.29dB vs -15.17±6.09dB, P=0.000 ). No significant difference was noted between the mean MD of FDT on post-operative three-month and post-operative six-month (-8.16±5.29dB vs -7.85±5.18dB ). The sensitivity value (dB) of central target on FDT was also correlated significantly with the extent of RD on macular area (R=-0.595, P=0.000). Conclusion:Our results suggest that FDT might be a useful and simple technique for functional evaluation in the diagnosis and post-operative follow-up of patients with RRD under this scoring system. The mean MD on FDT was stable on post-operative three-month in patients with anatomical success.
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