Horta, Guilherme A., et al. “Ultrasound Power and Irrigation Volume in Different Lens Opacity Grades: Comparison of Femtosecond Laser-Assisted Cataract Surgery and Conventional Phacoemulsification”.
Clinics, vol. 74, Oct. 2019, p. e1294,
https://doi.org/10.6061/clinics/2019/e1294.