Purpose: Discussing the testing procedure of multifocal electroretinography ( ERG ).

目的: 探讨多焦视网膜电图 ( multifocalelectroretinography,MERG ) 测定过程的步骤及注意事项.

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Objective : To observe the retinal function of macular disease with multi focal electroretinogram ( M ERG ).

目的: 应用多焦视网膜电图 ( MERG ) 观察视网膜功能.

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