Study of Macular Function by Multifocal Electroretinography in Patients With Vogt-Koyanagi-Harada Syndrome

Macular function revealed by Snellen chart and mfERG is severely impaired in VKH patients with active uveitis. Treatment with immunosuppressive agents leads to an earlier, faster, and better recovery of VA, and a delayed but limited recovery of macular function as indicated by mfERG at 12 months. MfERG could be an ancillary test that may be useful in guiding therapy of patients with VKH syndrome.