Wong SS, et al. - This trial investigated whether different types of retinal fluid in the central macula influenced the reproducibility of choroidal thickness (CT) measurements on enhanced depth imaging optical coherence tomography (EDI-OCT). A reduction was reported in the CT measurement reproducibility due to the presence of macular fluid, particularly in eyes with subretinal fluid and greater choroidal thickness. A variation of 74.1 μm in subfoveal CT or 63.9 μm in average CT could be warranted in order to recognize true clinical change, in eyes with macular fluid.