Fig. 7

Ocular fundus photographs are shown, a just after the previous proton therapy. b Five months after the previous proton therapy. Tumor regrowth was noted towards the optic disc side. c After the systemic chemotherapy (before this treatment using ¹⁰⁶Ru applicator). Slight tumor regression was found, but vital component still remained on the optic disc side (arrow). d Three months after this treatment. A tumor response was found, and the tumor turned inactive scar-like tissue