Optical coherence tomography
DILATION
Both a swept-source OCT (DRI-OCT Triton, TOPCON, Japan) and a spectral domain OCT (Cirrus 5000 HDOCT, Carl Zeiss Meditec, USA) devices will be used after dilation.Image quality should be higher than 60 and 5 in DRI-OCT triton and Cirrus 5000 HD-OCT, respectively.