Prediction accuracy of intraocular lens power calculation methods after laser refractive surgery

BMC Ophthalmology

Research Article

Rongfeng Liao¹  Yubo Wu¹  Songyu Liu² 

[1] Department of Ophthalmology, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Road, 230022, Hefei, Anhui, China;Department of Ultrasound, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Road, 230022, Hefei, Anhui, China;

关键词: Biometry;    Cataract surgery;    Intraocular lens power calculation;    Lasik;   

DOI  :  10.1186/s12886-017-0439-x

 received in 2016-12-30, accepted in 2017-04-05,  发布年份 2017

来源: Springer

【 摘 要 】

BackgroundThis study aimed to evaluate the prediction accuracy of postoperative refractions using partial coherence interferometry (IOL-Master) and applanation ultrasound (AL-3000) assisted with corneal topography (TMS-4) in eyes that had undergone myopic laser-assisted in situ keratomileusis (LASIK).MethodsHaigis-L formula, Koch–Maloney method using Haigis formula, Shammas clinically derived K-value (simulated keratometric value) correction (Shammas c.d.) using Haigis formula, and Shammas post-LASIK (Shammas-PL) formula were used in eyes with myopic LASIK. Constants were derived from the optimized constants in 133 virgin eyes. Refractive outcomes were determined by streak retinoscopy and subjective manifest refraction. Methods and formulas were evaluated by mean error (ME), standard deviation (SD), range of error, mean absolute error (MAE), median absolute error, 95% confidence interval of MAE, and percentage of eyes within ±0.5 diopter (D), ±1.0 D, and ±1.5 D of prediction.ResultsSDs of the Haigis-L, Koch-Maloney method using the Haigis formula, Shammas c.d. using the Haigis formula, and the Shammas-PL formula using IOL-Master were 0.721, 0.695, 0.695, and 0.698; and those using AL-3000 assisted with TMS-4 were 0.782, 0.741, 0.743, and 0.778, respectively.ConclusionsNo-history methods that corrected corneal power with measurements using IOL-Master were promising in myopic post-LASIK eyes, but still a gap in prediction accuracy exists between virgin eyes and post-LASIK eyes.

【 授权许可】

CC BY   
© The Author(s). 2017