Cataract is the leading cause of treatable blindness worldwide.Currently, surgical removal of the opaque lens and implantation of an intraocular lens (IOL) is the primary method for treating cataracts.Accurate calculation of IOL power is crucial for improving postoperative visual quality.IOL power calculation requires accurate measurement of preoperative ocular biometric parameters.Preoperative assessment and application of ocular biometric parameters, including the selection of accurate measurement devices and IOL power calculation formulas, should be emphasized in cataract cases.To better meet the needs of visual quality and quality of life of patients after surgery, this consensus provides recommendations based on important international literature and evidence-based research regarding the selection and measurement of ocular biometric parameters before cataract surgery.These recommendations include traditional ocular structural parameters such as axial length, corneal curvature, anterior chamber depth, lens thickness, corneal diameter, and central corneal thickness, as well as optical parameters including kappa angle, alpha angle, and wavefront aberrations.In addition, this consensus recommends the parameters required for IOL power calculation formulas.The goal of this consensus is to standardize the selection, measurement, and use of ocular biometric parameters in clinical practitioners before cataract surgery, thereby improving refractive outcomes and visual quality after cataract surgery.

Cataract; Surgery; Axial length; Corneal curvature; Intraocular lens; Refractive power; Consensus