Epidemiological Study of Health Effects in Emergency Workers at TEPCO's Fukushima Daiichi Nuclear Power Station : Cataracts Nationwide Survey

Abstract

Cataract surveys are ongoing for the approximately 20,000 emergency workers at TEPCO's Fukushima Daiichi Nuclear Power Station. Of these workers, 3,673 were identified in the nationwide survey as subjects with exposure doses of 20 mSv or more, and 479 were examined between April 2018 and March 2020. Vacuoles were observed in a relatively large number of subjects. Continual long-term investigation is needed to examine the possibility of progression from vacuoles to posterior subcapsular cataracts.