Sala Uno Opthalmology Clinic 1 article published in JoVE Medicine Evaluation of Capillary and Other Vessel Contribution to Macular Perfusion Density Measured with Optical Coherence Tomography Angiography Fernando José Macouzet-Romero1, Gabriel Antonio Ochoa-Máynez1, Olivia Pérez-García1, Beatriz Jatziri Pérez-Aragón1, Virgilio Lima-Gómez1 1Retina Department, Sala Uno Opthalmology Clinic We describe the evaluation of a coefficient of determination between vessel and perfusion density of the parafoveal superficial capillary plexus to identify the contribution of vessels larger than capillaries to perfusion density.