From: Brillouin Microscopy of Collagen Crosslinking: Noncontact Depth-Dependent Analysis of Corneal Elastic Modulus Invest. Ophthalmol. Vis. Sci.. 2013;54(2):1418-1425. doi:10.1167/iovs.12-11387 Figure Legend: Shear modulus at 0.2 Hz of central corneal button (4 mm diameter). Buttons were resected and immersed in epi-off (dextran-based) solution (N = 6) versus epi-on (saline-based) soaking (N = 6) for 30 minutes before measurement. Error bars: SEM. *P < 0.05. Date of download: 12/3/2017 The Association for Research in Vision and Ophthalmology Copyright © 2017. All rights reserved.