To report a case of overhanging bleb excision using Indocyanin green (ICG) dye.

A 71-year-old man visited our clinic complaining of a white corneal foreign body in his left eye. The patient underwent mitomycin-assisted trabeculectomy surgery 8 years prior. Slit lamp examination revealed a large overhanging bleb. Because of its large size, surgical excision using ICG dye was performed. After excision surgery, the IOP was well controlled and no anterior chamber inflammation was observed. Two months later, the IOP was still stable at 11 mm Hg and no recurrence of the overhanging bleb was found.

ICG dye is useful in delineating between a functioning bleb and a non-functioning overhanging bleb. ICG dye-assisted bleb excision is a useful method for decreasing complications such as aqueous humor leakage and damage of the original bleb.