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We thank Kim and Oh for their interest in our recently published article.1 They mention about the possibility that the morphologic change of a target object (ie, choroidal thickening/thinning) may alter laser speckle phenomenon even if blood flow velocity is stable.2 Unsurprisingly, choroidal blood flow in central serous chorioretinopathy (CSC) is thought to inextricably link with choroidal thickness. As choroidal hyperperfusion is believed to thicken the choroid, a sponge-like tissue rich in blood supply, it would not be clinically relevant to argue the assumption of choroidal thickening/thinning without any change in blood flow velocity. Choroidal circulation and thickness generate the cause–effect relationship. Interestingly, the …
Acknowledgements We would like to express our deepest appreciation to Hitoshi Fujii (Softcare Ltd), who is an inventor of LSFG, for his grateful advice.
Contributors MS, WS and SI contributed to conception, interpretation, and drafting the manuscript.
Competing interests None.
Patient consent Obtained.
Provenance and peer review Not commissioned; internally peer reviewed.
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