Accuracy of IOL Power Calculations Using IOL Master in High Axial Myopia

Abstract

The most common indication for secondary intervention after implantation of foldable intraocular lenses (IOL) is deviation from target refraction. Beside postoperative anterior chamber depth and preoperative axial length (AL) determination represents an important possible error source for incorrect IOL power prediction. The increase of vision still represents the main goal of cataract surgery. However, the refractive outcome has become more relevant especially in myopic patients, when clear lens exchange is used for refractive surgery. It is reported that additional to the increase in vision, the reduction of myopia is an important factor for patients’ satisfaction. Ultrasound-A-scan-biometry intraocular lens power calculation for cataract surgery sometimes shows lack of accuracy in patients with high myopia. The purpose of this retrospective study was to assess the accuracy of lens power calculation with optical biometry using the Zeiss IOLMaster across a large range of myopia levels.