1. From the Optic Nerve Head Research Laboratory and
2. the Ocular Biomechanics Laboratory, Devers Eye Institute, Legacy Health System, Portland, Oregon;
3. the Ocular Biomechanics Laboratory, Devers Eye Institute, Legacy Health System, Portland, Oregon; 3Ocular Biomechanics Laboratory, Department of Ophthalmology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; and
4. School of Public Health, Louisiana State University Health Sciences Center, New Orleans, Louisiana.