Comparison of Three Intraocular Lens Calculation Formulas for Predicting Postoperative Diopter in Patients with Cataract and High Myopia

Objective: To evaluate the accuracy of three calculation formulas of intraocular lens (IOL) on the refractive state of cataract patients with high myopia after cataract surgery, to study the influence of three formulas on axial length (AL), and to verify the advantage of Olsen formula over SRK/T and Haigis formula in predicting postoperative refraction in patients with high myopia and cataract, so as to provide a basis for selecting the degree of IOL in cataract patients with high myopia, so as to provide a basis for selecting the degree of IOL in cataract patients with high myopia. Methods We collected the data of sex, age, axial length, predicted value of SRK/T, Haigis, Olsen formula and postoperative true diopter of 101eyes of 10z eyes hospitalized in the First Affiliated Hospital of Guangzhou University of Chinese Medicine from 2016-10-10 to 2019-8-20. 101 cases were divided into three groups according to the AL. The prediction accuracy of the three formulas for different eye axis length was evaluated respectively,and the stability of the same formula for the prediction of different axial lengths was compared. Results Within the range of 26mm0.05) and there was significant difference between Olsen formula with SRK/T formula and Olsen formula and Haigis formula(p 30mm, the comparison of the three formulas was statistically significant. SRK/T formula showed significant difference in eye axis length among the three groups(p<0.05). For Haigis formula, there was significant difference between 26mm30mm group respectively(P<0.05). In Olsen formula, the statistical difference only existed between 26mm