Letter to the Editor - Reply to Mr. Hytowitz Liat Gantz; Dinah Paritzky; Mark Rosenfield;

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;

Clinical validation of a novel smartphone application for measuring best corrected visual acuity Mari Ogino; Rosa María Salmerón-Campillo; Stephen Hunter; Vincent Hussey; Donny Suh; Rujuta Gore; Norberto López-Gil; Matt Jaskulski; Daniel Piña-Miguelsanz;