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识别与分辨率图表用于在三焦眼内眼镜中确定失焦曲线

Pedro Tañá-Rivero¹, Pedro Tañá-Sanz, Santiago Tañá-Sanz

¹From the Oftalvist Alicante, Alicante, Spain (Tañá-Rivero, P. Tañá-Sanz, S. Tañá-Sanz); Department of Optics and Optometry and Vision Science, University of Valencia, Valencia, Spain (Montés-Micó, Cerviño).

Journal of cataract and refractive surgery

|May 23, 2024

概括

视敏度图的选择显著影响了对视近视障纠正眼内镜片 (IOLs) 的失焦曲线结果. 兰道特C图表显示的结果低于早期治疗糖尿病视网膜病变研究 (ETDRS) 图表,影响了性能比较.

科学领域:

眼科医生眼科眼科
眼镜测量是指眼睛的测量.
生物医学工程生物医学工程

背景情况:

长视纠正眼内透镜 (IOL) 的目的是恢复近视力.
失焦曲线对于在不同视觉距离上评估眼镜的性能至关重要.
视敏度测试的标准化对于可靠的IOL比较至关重要.

研究的目的:

调查不同的光型选择如何影响长视障碍纠正IOL患者的失焦曲线的确定.
为了比较使用早期治疗糖尿病视网膜病变研究 (ETDRS) 图表与Landolt C图表生成的失焦曲线的结果.

主要方法:

一项观察性病例控制研究,涉及49名患者植入阿斯基利奥三焦点内膜眼镜.
在术后6个月使用临床试验套件系统测量单眼失焦曲线.
使用ETDRS或Landolt C图表在光学条件下评估视觉敏度,在各种度 (+2.00 D到 -5.00 D) 中进行评估.

主要成果:

与ETDRS图表相比,用Landolt C图表生成的失焦曲线显示了明显较低的透过焦视敏度结果 (平均差异为0.12 ± 0.05 logMAR单位,P < .05).
在远距离,中距离和近距离视力组之间观察到视力敏度的显著差异,不包括未经纠正的远距离视力敏度.
虽然大多数患者获得了良好的折射结果,但图表的选择影响了测量的视觉性能.

结论:

选择的光型图表 (ETDRS与Landolt C) 显著影响了对视近视纠正IOLs的失焦曲线的结果.
与ETDRS图表相比,使用Landolt C图表时观察到更低的透过焦点结果.
研究人员在比较研究时应考虑图表选择对IOL性能数据的潜在影响.

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