Our recent double blind, placebo-controlled study demonstrated that Choto-san is effective in treating vascular dementia. So we have investigated the mechanism of the drug action with respect to improving cerebrovascular disorders.
　　
In this Study the effects of Choto-san on the microcirculation of bulbar conjunctiva in 16 patients with asymptomatic cerebral infarction were investigated with a video-microscopic system.

After the administration of Choto-san for four weeks, variables of microcirculatory flow of the bulbar conjunctiva, that is, the internal diameter of vessels, flow velocity and now volume rate were increased (These results suggest that Choto-san may have favorable effects on cerebrovascular disorders through changes in microcirculatory flow, erythrocyte agreeability and blood cell deformability).

Because of the preparing to visit Beijing and present my paper, I would be grateful if you send me the announcement containing the most updated information of the congress as soon as possible.