M. A. Khan, B. Aaqil, Z. Nazneen, A. Faisal, Z. Siddiqi, and R. Latif, “SCORING OF PAIN PERCEPTION DURING PHACOEMULSIFICATION UNDER TOPICAL ANAESTHESIA”, J Ayub Med Coll Abbottabad, vol. 33, no. 4, pp. 582–585, Oct. 2021.