Ikliluddin, A. and Rahmat Saputra, A. 2024. The effect of using the smartphone blue light filter feature on tear production. Qanun Medika - Medical Journal Faculty of Medicine Muhammadiyah Surabaya. 8, 02 (Jul. 2024). DOI:https://doi.org/10.30651/jqm.v8i02.21060.