Trypan blue to aid visualization of the vitreous during anterior segment surgery.

We describe the usefulness of intracameral injection of trypan blue to highlight vitreous in the anterior chamber. The technique was used in 3 eyes of 3 patients who had vitreous prolapse in the anterior chamber. Trypan blue 0.06% was injected in the anterior chamber under air to visualize and resect the prolapsed vitreous. Trypan blue stained the clear vitreous and improved visualization for a safe and atraumatic vitrectomy. No complications associated with the dye were found.