Abstract
After the Tokyo subway sarin attack in 1995, the support activities for the victims were started by volunteers. One of the activities was annual follow - up investigation of the healthy condition of the victims. In 2001, the Recvery Support Center (R.S.C.) was established as a non profit organization (NPO) to perform support and care of the victims and their family. The R. S. C. has continued to do annual follow - up investigation until now. We also performed the healthy survey for the victims in response to a request of the R. S. C. in 2004. The results from the follow- up investigations demonstrated that the victims have been suffered from various physical, mental and ocular symptoms for 20 years. Although the acute lethal toxicity of sarin is well known, the chronic effects or disturbances on health condition have not been well understood. A further follow- up investigation is necessary to clarify the chronic disturbances due to sarin gas poisoning.
