Multifocal electroretinography changes over 12 months after resolution of central serous chorioretinopathy: prospective observational study

Abstract

Purpose: To evaluate the changes in retinal function after anatomical resolution of central serous chorioretinopathy by multifocal electroretinography.Design: Prospective observational study.Methods: Thirty-two eyes of 32 patients with unilaterally resolved central serous chorioretinopathy were prospectively studied. Serial multifocal electroretinography examinations were performed at the initial visit for active central serous chorioretinopathy, the time of anatomical resolution (resolved central serous chorioretinopathy), and 3, 6, and 12 months after resolution. The peak amplitudes of the ?rst kernel responses were analysed and compared with those in 27 age-matched normal controls.Results: Compared with controls, N1 amplitudes of ring 1-4 and P1 amplitudes of ring 1-3 showed statistically significant reductions at 12 months after the resolution of central serous chorioretinopathy (p<0.05). The multifocal electroretinography amplitude substantially increased at the time of resolution and gradually improved until three months after the resolution of central serous chorioretinopathyConclusion: Serial examinations with multifocal electroretinography showed that retinal responses increased mostly after the resolution of central serous chorioretinopathy, and this improvement slowly progressed until three months; however, multifocal electroretinography amplitudes remained statistically reduced 12 months after anatomical resolution of central serous chorioretinopathy, indicating the residual functional deficits detected by multifocal electroretinography.