N. Agrawal, L. Agarwal, R. Yadav, A. Kumari, K. Singh, and D. Baral, “Analysis of Corneal Astigmatism after Clear Corneal Phacoemulsification : A Prospective Study”, Birat J. Health Sci., vol. 5, no. 2, pp. 1001–1005, Sep. 2020.