Assaf AH, Aly MG, Zaki RG, et al. - In this prospective non-randomized comparative study, researchers compared effective phacoemulsification time (EFX) in femtosecond laser-assisted cataract surgery (FLACS) vs traditional quick chop phacoemulsification (QCP) in senile nuclear cataracts with different densities focusing on soft and hard ones. This investigation was performed in Al Watany Eye Hospital and Ain Shams University Hospital, Cairo, Egypt. Two hundred fifty eyes with senile nuclear cataract (NC) were involved and classified into two main groups, FLACS and QCP groups. In total, 117 eyes were involved in the FLACS group and 133 eyes in the QCP group. When compared with the QCP technique, FLACS may provide benefits other than EFX reduction, such as astigmatic keratotomies, correct sizing, and centration of capsulotomies particularly in hard and soft nuclear cataracts. Only medium-density nuclear cataracts show a significant reduction in total EFX with FLACS.