Bioniko Consulting LLC 1 article published in JoVE Bioengineering Simulating the Mechanics of Lens Accommodation via a Manual Lens Stretcher Joshua N. Webb1, Caroline Dong1, Andres Bernal2, Giuliano Scarcelli1 1Fischell Department of Bioengineering, University of Maryland, 2Bioniko Consulting LLC We present an efficient method of studying lens accommodation by using a manual lens stretcher. The protocol mimics physiological accommodation by pulling the zonules connected around the lens capsule, thereby, stretching the lens.