D. L. de Jesus, F. F. Villela, L. F. Orlandin, F. N. Eiji, D. O. Dantas, and M. R. Alves, “ Comparison between refraction measured by Spot Vision ScreeningTM and subjective clinical refractometry ”, Clinics, vol. 71, no. 2, pp. 69–72, Feb. 2016, doi: 10.6061/clinics/2016(02)03.