Srivannaboon, Sabong. “Outcome of Manifest Refraction Performed by First Year Residents Evaluating the Schematic Eye”. Siriraj Medical Journal 56, no. 10-12 (October 1, 2004): 555–560. Accessed May 19, 2024. https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/245569.