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| Comparisons of Multifocal Electroretinograms and Optical Coherence Tomography Images before and after Surgery in Patients with Rhegmatogenous Retinal Detachment Involving the Macular Area |
| Ruizhen Cai,Kang Chen |
| Henan Eye Institute, Henan Eye Hospital, Zhengzhou 450003, China |
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Abstract Objective: To evaluate changes in multifocal electroretinogram (mfERG) and optical coherence tomography(OCT) before and after surgery in patients with thegmatogenous retinal detachment (RRD) involving the macular area. Methods: This was a retrospective study in which 52 eyes (52 patients) with RRD involving
the macular area (RRD group) were compared with the fellow healthy eyes (normal control group). All patients in the RRD group underwent scleral buckling surgery. Before each surgery, the eyes were examined by mfERG and OCT. At one week and at l. 3, and 6 months after surgery, the eyes were examined again.
Using Pearson product moment correlation analysis and repeated measurement methods were used to analyze the datas. Results: A11 RRD eyes successfully underwent the surgery successfully. The thickness of the macular fovea of the RRD group before surgery, 534士44 Um, was significantly greater than for the
normal control group(户17.127, P<0.05). At one week and at l, 3. and 6 months after surgery, the foveal retinal thickness decreased significantly (P<O.01). The Nl and Pl wave amplitude densities at ring l of the RRD eyes were significantly less than in the control eyes (tN l =17.372, tPl=23.943, P<0.05) as was the delay
in the peak latency (tNl=5.291, tPl=7.306, P<0.05). At one week and at l, 3, and 6 months after surgery, the N1 and Plwave amplitude densities at ring l were higher than before the surgery (P<O.01). The delay in the peak latency was not significantly changed compared to the preoperative values. At l, 3, and 6 months
after the surgery, the best corrected visual acuity was negatively correlated with macular center thickness(r=-0.801, -0.695, -0.643, P<0.05, at each follow up). The ring l Nl and Pl wave amplitude densities were positively correlated with the macular center thickness (rx11=0.702, 0.695, 0.632, rpl=0.811, 0.713, 0.648,
P<0.05, at each follow up), but the peak latency was not correlated with the macular center thickness.Conclusions: The morphology and function in the macular area of patients with RRD can be objectively and comprehensively measured by OCT and mfERG applications. With mfERG and OCT. the success after
retinal detachment surgery can be assessed.
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Received: 11 January 2017
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Corresponding Authors:
Kang Chen, Henan Eye Institute. Henan Eye Hospital, Zhengzhou 450003, China(Email: kangch419@163.com)
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