Viewing distance of smartphones in presbyopic and non-presbyopic age Laura Boccardo;

Preliminary evaluation of smartphone-based addition measurement in a presbyopic population Rosa M. Salmerón-Campillo; Jose A. Diaz-Guirado; Gines Martinez-Ros; Mateusz Jaskulski; Norberto López-Gil;

Binocular vision parameters and visual performance in bilateral keratoconus corrected with spectacles versus rigid gas-permeable contact lenses Luis Fernando Barba¿Gallardo; Lina María Jaramillo-Trejos; Ana María Agudelo-Guevara; Andrea Paola Galicia-Durán; Elizabeth Casillas¿Casillas;