Abstract:Trifocal intraocular lenses, designed based on diffractive, refractive, or hybrid optical principles, can simultaneously correct distance, intermediate, and near vision, and are gradually becoming an important alternative to conventional monofocal intraocular lenses in cataract surgery. However, the dynamic changes in the early postoperative visual function recovery, the control of optical disturbances, the patient's adaptability, and the differences from monofocal intraocular lenses still need to be systematically explored. Based on the recent technological advances, this article systematically reviews the optical principles of trifocal intraocular lens, the characteristics of postoperative visual function improvement, and the challenges in clinical applications, so as to provide a reference for clinical decision-making and research directions.