Wijayaningrum, Wijayaningrum, Trilaksana Nugraha, Sri Inakawati, and Hari Peni. 2016. “The Application of Training Module about School Children’s Central Vision Examination for Increasing Elementray School Teacher’s Knowledge and Skill Level to Detect Poor Visual Acuity”. Ophthalmologica Indonesiana 41 (3). https://doi.org/10.35749/journal.v41i3.52.