基于vep的视敏度估计不能完全反映屈光模糊。

IF 2.9 4区 医学 Q2 OPHTHALMOLOGY
Documenta Ophthalmologica Pub Date : 2025-10-01 Epub Date: 2025-07-31 DOI:10.1007/s10633-025-10044-z
Dillys A D Amega, Julia Haldina, Ingrid Toews, Heiko Philippin, Michael B Hoffmann, Enyam K A Morny, Sven P Heinrich
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引用次数: 0

摘要

目的:基于视觉诱发电位(VEPs)的视觉敏度(VA)客观估计已成为一种成熟的技术,用于心理物理VA可能不可靠的情况。屈光不正和不适当的调节可能会不利地影响VA测量的结果。因此,由于屈光模糊导致的VA降低是否反映在基于vep的VA估计中是有趣的。方法:我们通过使用加透镜或产生高斯模糊的滤光片将19名参与者的视力降低到接近1.0 logMAR。对于这两种退化类型,我们将基于vep的客观VA测试结果与标准心理物理VA进行了比较。为了进行比较,我们还获得了心理物理光栅VA。结果:在高斯模糊情况下,基于vep的VA和心理物理Landolt-C VA的两个值几乎相同。在屈光模糊的情况下,所有参与者基于vep的评估结果比心理物理的Landolt-C评估结果平均高出0.37 logMAR,且存在一定的个体差异。心理物理光栅VA受模糊的影响相对轻微,模糊类型的差异效应不明显。结论:在屈光性模糊的情况下,基于vep的视差估计不能显示视差减少的全部量。一方面,这降低了基于vep的方法对不正确折射和错误调节的敏感性,而这些通常不是VA降低的目标原因。另一方面,它降低了vep定量屈光相关视力损害的准确性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Dioptric blur is not fully reflected by VEP-based visual acuity estimates.

Dioptric blur is not fully reflected by VEP-based visual acuity estimates.

Dioptric blur is not fully reflected by VEP-based visual acuity estimates.

Dioptric blur is not fully reflected by VEP-based visual acuity estimates.

Purpose: Objective estimation of visual acuity (VA) based on visual evoked potentials (VEPs) has become an established technique for cases where psychophysical VA might be unreliable. Refractive errors and improper accommodation could undesirably affect the outcome of VA measurements. Consequently, it is of interest whether a VA reduction due to dioptric blur is reflected by VEP-based estimation of VA.

Methods: We degraded vision in 19 participants to nearly 1.0 logMAR by using either plus lenses or a filter that creates Gaussian blur. For both types of degradation, we compared the outcomes of objective VEP-based VA testing to standard psychophysical VA. For comparison, we also obtained psychophysical grating VA.

Results: With Gaussian blur, both values, VEP-based VA and psychophysical Landolt-C VA, were nearly identical. With dioptric blur, VEP-based VA was better than psychophysical Landolt-C VA in all participants by an average of 0.37 logMAR with some interindividual variability. Psychophysical grating VA was only relatively mildly affected by blur with no sizable differential effect of blur type.

Conclusion: VEP-based estimation of VA does not reveal the full amount of VA reduction in the case of dioptric blur. On the one hand, this decreases VEP-based methods' susceptibility to incorrect refraction and mis-accommodation, which are not normally the targeted causes of VA reduction. On the other hand, it reduces the accuracy in quantifying refraction-related impairments of vision with VEPs.

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来源期刊
Documenta Ophthalmologica
Documenta Ophthalmologica 医学-眼科学
CiteScore
3.50
自引率
21.40%
发文量
46
审稿时长
>12 weeks
期刊介绍: Documenta Ophthalmologica is an official publication of the International Society for Clinical Electrophysiology of Vision. The purpose of the journal is to promote the understanding and application of clinical electrophysiology of vision. Documenta Ophthalmologica will publish reviews, research articles, technical notes, brief reports and case studies which inform the readers about basic and clinical sciences related to visual electrodiagnosis and means to improve diagnosis and clinical management of patients using visual electrophysiology. Studies may involve animals or humans. In either case appropriate care must be taken to follow the Declaration of Helsinki for human subject or appropriate humane standards of animal care (e.g., the ARVO standards on Animal Care and Use).
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