Accuracy of Various Intraocular Lens Calculation Formulas in Shallow Anterior Chamber Patients with Normal Axial Length

丽英 邴
2018 Advances in Clinical Medicine  
Objective: To compare the accuracy of five intraocular lens calculation formulas (Haigis, SRK II, Hoffer Q, Holladay1 and SRK/T) in shallow anterior chamber patients with normal axial length. Methods: 45 patients who underwent uncomplicated cataract surgery were involved in this retrospective analysis. This study was performed in the Department of Ophthalmology at the Affiliated Hospital of Qingdao University from January 2016 to October 2017. The IOL Master was used to predict the refractive
more » ... ct the refractive outcomes for five formulas. Actual postoperative refractions were taken on 3 to 8 weeks after surgery. Refractive error and absolute refractive error were calculated. The SPSS19.0 was used for statistical analysis to compare the refractive errors, absolute refractive errors and the refractive error distribution of different IOL formulas. Results: The mean refractive error of the Haigis formula (-0.13 ± 0.76 D) differed significantly from Hoffer Q (-0.34 ± 0.74 D, P < 0.01), Holladay1 (-0.33 ± 0.73 D, P < 0.01) and SRK/T (-0.31 ± 0.72 D, P < 0.01) formulas. The mean absolute refractive error were 0.58 ± 0.50 D,0.62 ± 0.50 D, 0.62 ± 0.51 D, 0.61 ± 0.51 D and 0.58 ± 0.53 D with Haigis, SRK II, HofferQ, Holladay1, and SRK/T formulas, respectively, and there was no significant differences among them (χ 2 = 4.027, P = 0.402). There was no significant difference in the distribution of refractive error between different IOL formulas (χ 2 = 3.782, P = 0.872). Conclusion: The Haigis formula can predict refraction in shallow anterior chamber patients with normal axial length with less error.
doi:10.12677/acm.2018.82036 fatcat:v3xt7nifqzgrbeojyug4mjkyfi