Agreement between Lea Symbols and Patti Pics visual acuity in children and adults Arjun Sapkota; Sanjeeta Sitaula; Gauri Shankar Shrestha; Niraj Dev Joshi; Bipin Koirala; Nabin Paudel;

Quantification of visual acuity: ¿Counting fingers¿ and ¿Hand movement¿ with the Berkeley Rudimentary Vision Test Alba Herrero; Halima Berrada; Rafael I. Barraquer; Ralph Michael;

Prevalence of astigmatism among 99,515 children in different areas of Xi'an City, China Ye Zhang; Xiaokang He; Wei Dong; Zihao Wang; Chengfei Liu; Yanying Li; Zhaojiang Du;