Related Experiment Video
Updated: Aug 7, 2026
Using a 1064-nm Picosecond Neodymium-Doped Yttrium Aluminum Garnet Laser for Periorbital Hyperpigmentation
Published on: May 23, 2025
Trypan blue-assisted neodymium:YAG laser treatment for overfiltering bleb
Malik Y Kahook1, Joel S Schuman, Robert J Noecker
1University of Pittsburgh Medical Center, Eye and Ear Institute, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA. malik.kahook@gmail.com
Abstract:
Overfiltering blebs can lead to postoperative problems including hypotony maculopathy, decreased vision, and increased ocular discomfort. Many methods have been used in the past with varying results. Various lasers have been used in an attempt to cause localized scarring and fibrosis. We report a treatment technique to noninvasively treat a patient with an overfiltering bleb using trypan blue and a frequency-doubled continuous-wave neodymium:YAG laser emitting green light.
