Abdelfatah, M. E., Elhady, E. M., Elsayed, T. G., Elyamani, N. E. M. (2021). 'Evaluation of Lacrimal Sac Diameter in Different Age groups Using Ultrasound Biomicroscopy', The Egyptian Journal of Hospital Medicine, 84(1), pp. 2538-2541. doi: 10.21608/ejhm.2021.188548