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

The repeatability and reproducibility of four techniques for measuring horizontal heterophoria: Implications for clinical practice Nicola S. Anstice, Bianca Davidson, Bridget Field, Joyce Mathan, Andrew V. Collins, Joanna M. Black

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