Rojas Verdugo, E.P. and Martínez Santander, C.J. (2017) “Grade of Visual sharpness of the students of the Career of Infimary of the Catholic University of Cuenca extension Cañar”, Killkana Salud y Bienestar, 1(2), pp. 27–30. doi:10.26871/killcana_salud.v1i2.71.