Hubungan Durasi Penggunaan Gawai dengan Kejadian Astenopia pada Mahasiswa Program Studi Keperawatan saat Pandemi COVID-19: Correlation between Gadget Usage Duration with Asthenopia Incidence in Nursing Students during Covid-19 Pandemic. J. Sains. Kes. 2025;5(4):507-613. doi:10.30872/jsk.v5i4.507 - 613