He is a fellow of the American Academy of Ophthalmology, Association for Research in Vision and Ophthalmology and American College of Surgeons. Dr. Liebmann serves as a member of the Board of Governors of the World Glaucoma Association, Board of Directors of The Glaucoma Foundation and Secretary-Treasurer of the New York Glaucoma Society. Dr. Liebmann is a past-President of the World Glaucoma Association, American Glaucoma Society, and the New York Society for Clinical Ophthalmology, Emeritus Editor-in Chief of Journal of Glaucoma and was co-founder of the New York Glaucoma Research Institute, the American Glaucoma Society Foundation and ASCRS Glaucoma Day.
His current main areas of research interest include the causes of glaucoma, glaucoma progression, glaucoma surgery, ocular imaging, and neuroprotection.