Convergence insufficiency: Review of clinical diagnostic signs Liat Gantz; Hadas Stiebel-Kalish;

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;

Prevalence of convergence insufficiency among Spanish school children aged 6 to 14 years Sánchez-Cuadrado Carla; Bueno-Fernández Sara; Cárdenas-Rebollo JM; Palomo-Álvarez Catalina;