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KMID : 0374920100310010033
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Inje Medical Journal
2010 Volume.31 No. 1 p.33 ~ p.43
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Evaluation of Macular Function before and after Surgery of Epiretinal Membrane using Multifocal Electroretinogram
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Choi Sung-Wook
Lee Sang-Yeop
Kim Hyun-Woong
Yun Il-Han
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Abstract
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Objectives: To assess macular function after vitrectomy and membrane removal in eyes with idiopathic epiretinal membrane by means of multifocal electroretinogram (mfERG).
Methods: Visual acuity, macular thickness measured by optical coherence tomography (OCT), and mfERG recordings were achieved for 14 eyes of 14 patients with idiopathic epiretinal membrane. All exams were performed before epiretinal membrane surgery and 1, 3, and 6 months after surgery. The average retinal response density and implicit time of each local response were estimated as anatomic macular areas corresponding roughly to 5 rings. Preoperative and postoperative responses of visual acuity, macular thickness, and mfERG were compared. The correlations of the change of retinal response density, visual acuity, and macular thickness were analyzed.
Results: There were no significant changes in amplitude and implicit time measured by mfERG before and after the surgery (p>O.05). There were no significant correlations between the changes of amplitude and implicit time and visual acuity and macular thickness.
Conclusion: Changes in mfERG recordings were not useful for predicting clinical prognosis after epiretinal membrane surgery.
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KEYWORD
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Idiopathic epiretinal membrane, Multifocal electroretinogram, Optical herence tomography
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