Figure Legend: From: Pathway to Retinal Oximetry Trans. Vis. Sci. Tech.. 2014;3(5):2. doi:10.1167/tvst.3.5.2 Figure Legend: The 2003 prototype of a two-wavelength retinal oximeter at the Louisiana State University Lion's Eye Center. The light shield is removed showing the optical section, with dual optical paths directed by front surface and dichroic mirrors, similar to that of the first system built at the University of Virginia. Images were recorded by an astronomy CCD camera. In the background is a dual-wavelength recording of a primary artery and vein (reproduced with permission from Bahram Khoobehi). Date of download: 1/1/2018 The Association for Research in Vision and Ophthalmology Copyright © 2018. All rights reserved.