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- W2347813718 abstract "Objective To study the value of comprehensive examination of visual electrophysiology in prognosis of visual function after cataract operation.Methods 315 patients with cataract(408 eyes) underwent preoperative routine examination with pattern reversal visual evoked potential(PVEP), red and blue flicker electroretinogram(ERG) and oscillatory potential (OPs). Normal control group included 162 cases (266 eyes). All of the ocular fundi were examined postoperatively and corrected visual acuities were obtained 3 months after operation. Results Postoperative corrected visions ≥0.5(Ⅰ) and 0.5(Ⅱ) in case group compared with that in control group, amplitudes of PVEP P 100 wave decreased significantly and PVEP P 100 wave latency times prolonged significantly in group Ⅰ and Ⅱ. There was much more prominent changes in P 100 wave of group Ⅱ due to other factors influencing visual function. There wasn't significant difference of the amplitudes and the latency times of a wave and b wave of Red Blue ERG in group Ⅰ and the control group preoperatively. The amplitudes of a wave and b wave of Red ERG decreased, the latency times of a wave and b wave of Red ERG prolonged, the amplitudes of a wave and b wave of Blue ERG decreased but latency times didn' t prolong in group Ⅱ. The value of OPs decreased in groupⅡ compared with that of the control group, which was related to the retinopathy due to blood circulation obstruction.Conclusion Combined examination of visual electrophysiology can estimate visual function thoroughly. The prognosis will be good if various examinations are normal before operation, but will not be good if PVEP P 100 latency time prolong, the amplitudes of a wave and b wave of Red ERG decrease and the latency time prolong, the amplitudes of a wave and b wave of Blue ERG decrease and the value of OPs decrease." @default.
- W2347813718 created "2016-06-24" @default.
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- W2347813718 date "2000-01-01" @default.
- W2347813718 modified "2023-09-28" @default.
- W2347813718 title "Comprehensive examination of visual electrophysiology of visual function assessment after cataract operation" @default.
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