Thao, N. T. . X. ., Hải, T., Hiếu, L. V., & Tiên, N. T. (2021). Impaired visual activity and some factors affect visual activity in cataract patients who come to Hanoi Medical University Hospital. Journal of Medical Research, 147(11), 101-109. https://doi.org/10.52852/tcncyh.v147i11.511 (Original work published December 1, 2021)