How do you approach re-treatment in a patient with chronic central serous chorioretinopathy who has residual subretinal fluid after their first half-dose?

If the fovea is dry and the residual fluid is outside the fovea, I usually observe without additional treatment. If the residual SRF is subfoveal in location and decreasing compared with pre-treatment, I typically observe, hoping for continued improvement to a dry fovea. If there is residual subfove...