The Image Warping Test: A Novel Method to Quantify and Qualify Metamorphopsia.

IF 2.3 2区医学 Q2 OPHTHALMOLOGY

Retina-The Journal of Retinal and Vitreous Diseases Pub Date : 2024-08-09 DOI:10.1097/IAE.0000000000004240

Clara Valor Suárez, Jonathan Than, Ye Ling, Jean-Yves Guillemaut, David M Frohlich, Tom H Williamson

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Abstract

Purpose: To determine the validity, accuracy and acceptability of the Image Warping Test (IWT), a novel test for the measurement of visual distortion in the central visual field.

Methods: 25 volunteers with metamorphopsia secondary to vitreoretinal pathology were recruited at a tertiary referral center. All subjects underwent ophthalmological examination and measurement of metamorphopsia via Amsler grid, Morphision, M-CHARTS and the IWT. Construct validity was determined through assessment of the association between symptoms, pathology, visual acuity, established metamorphopsia test results and IWT results.

Results: There was close association between subjective estimation of metamorphopsia severity and IWT score (p=0.005), between Morphision result and IWT score (p=0.015), and between the nature of vitreoretinal pathology and IWT score (p=0.007). There was no statistically significant correlation between best corrected distance visual acuity and IWT score, and between M-CHARTS score and IWT score.

Conclusion: The IWT allows the creation of a digital map of subjective metamorphopsia which effectively measures its severity and nature, and opens the possibility to its non-invasive correction in future through inverse mapping of the distortion map onto live images.

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图像扭曲测试：量化和鉴定变形症的新方法

目的：确定图像扭曲测试（IWT）的有效性、准确性和可接受性。方法：在一家三级转诊中心招募了 25 名因玻璃体视网膜病变而继发变形的志愿者。所有受试者均接受了眼科检查，并通过阿姆斯勒网格、Morphision、M-CHARTS 和 IWT 测量了变像度。通过评估症状、病理、视力、已确定的变形测试结果和 IWT 结果之间的关联，确定了结构有效性：结果：对变形严重程度的主观估计与 IWT 评分（P=0.005）、Morphision 结果与 IWT 评分（P=0.015）以及玻璃体视网膜病变性质与 IWT 评分（P=0.007）之间存在密切联系。最佳矫正距离视力与 IWT 评分之间以及 M-CHARTS 评分与 IWT 评分之间没有统计学意义上的相关性：结论：IWT 可以绘制主观变形的数字地图，有效测量变形的严重程度和性质，并为将来通过将变形图反向映射到实时图像上进行无创矫正提供了可能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Retina-The Journal of Retinal and Vitreous Diseases 医学-眼科学

CiteScore

5.70

自引率

9.10%

发文量

554

审稿时长

3-6 weeks

期刊介绍： RETINA® focuses exclusively on the growing specialty of vitreoretinal disorders. The Journal provides current information on diagnostic and therapeutic techniques. Its highly specialized and informative, peer-reviewed articles are easily applicable to clinical practice. In addition to regular reports from clinical and basic science investigators, RETINA® publishes special features including periodic review articles on pertinent topics, special articles dealing with surgical and other therapeutic techniques, and abstract cards. Issues are abundantly illustrated in vivid full color. Published 12 times per year, RETINA® is truly a “must have” publication for anyone connected to this field.