“…It can produce retinal scar tissue, which replaces the necrotic portion following thermal damage of the retinal structure, to adhere the pigment epithelium to the overlying retina. However, the wound healing processes to form the retinal scar tissue have not been fully estab lished yet, despite the extensive studies by many investigators [1,[3][4][5]7, 9 -1 1|. One of the unanswered but very important questions is what kind of cells do proliferate to form the retinal scar tissue after the photocoagu lation.…”