We observe an increase in the number of cases of severe irreversible corneal oedema after laser iridotomy (LI), and the disorder is one of the common reasons for corneal oedema in Japan. In order to study clinical characteristics of the disorder, we analysed data of 98 consecutive eyes with LI-induced corneal oedema that was treated by our hospital between 1995 and 2005. This number represents approximately 3.6% of the total number of corneal transplants, and the incidence seems to be increasing (table 1). The mean duration between LI and first visit was 7.4 years. Prophylactic purpose, especially for the treatment of occludable angle was the leading cause of LI. In 28 eyes in which the laser type was identified, 27 eyes use argon laser (96.4%). …