Correction: Blindness and Glaucoma: A Multicenter Data Review from 7 Academic Eye Clinics. - Luca Rossetti; Maurizio Digiuni; Giovanni Montesano; Marco Centofanti; Antonio M Fea; Michele Iester; Paolo Frezzotti; Michele Figus; Antonio Ferreras; Francesco Oddone; Lucia Tanga; Teresa Rolle; et al. (PLoS ONE, 2016)