Pieh Stefan, Artmayr Cornelia, Schartmüller Daniel, Kriechbaum Katharina
Department of Ophthalmology & Optometry, Medical University of Vienna, Vienna, Austria
Department of Ophthalmology & Optometry, Medical University of Vienna, Vienna, Austria.
BMJ Open Ophthalmol. 2024 Aug 7;9(1):e001661. doi: 10.1136/bmjophth-2024-001661.
BACKGROUND/AIMS: Investigation of the decentration sensitivity of monofocal intraocular implants with a focus on different aberration corrections depending on different spatial frequencies.
Using an optical bench, the decentration sensitivities of an intraocular lens (IOL) with a high spherical aberration correction of -0.27 µm (ZCB00 Johnson & Johnson), an IOL with an aberration correction of -0.20 µm (Primus HD OphthalmoPro) and an IOL with an aberration neutral design (CT Asphina 409MP Carl Zeiss Meditec) were evaluated for Strehl ratio values and for 25, 50 and 100 lp/mm. Two different corneas with +0.13 µm and +0.28 µm were used. The lenses were tested in the best centration and up to a decentration of 0.5 mm.
Decentration sensitivity affects high spatial frequencies more than lower ones. The possible decentration sensitivity is determined by the amount of spherical aberration of the cornea. The effective decentration sensitivity is determined by the extent to which these spherical aberrations are compensated. If these are not compensated, there is hardly any decentration sensitivity.
High spatial frequencies are more affected by decentration sensitivity. The decentration sensitivity of an IOL is determined by the extent to which the spherical aberration of the cornea is corrected.
背景/目的：研究单焦点人工晶状体的偏心敏感度，重点关注不同空间频率下的不同像差校正情况。
使用光具座，对具有-0.27 µm高球差校正的人工晶状体（IOL，强生公司的ZCB00）、具有-0.20 µm像差校正的IOL（Primus HD OphthalmoPro）以及具有像差中性设计的IOL（卡尔蔡司医疗技术公司的CT Asphina 409MP）的斯特列尔比值以及25、50和100 lp/mm的情况进行偏心敏感度评估。使用了两种不同的角膜，分别为+0.13 µm和+0.28 µm。这些晶状体在最佳对中状态下以及偏心至0.5 mm的情况下进行测试。
偏心敏感度对高空间频率的影响大于对低空间频率的影响。可能的偏心敏感度由角膜的球差量决定。有效的偏心敏感度由这些球差得到补偿的程度决定。如果这些球差未得到补偿，则几乎不存在偏心敏感度。
高空间频率受偏心敏感度的影响更大。IOL的偏心敏感度由角膜球差得到校正的程度决定。
