Background: Restrictions due to the recent COVID-19 pandemic catalysed the deployment of telehealth solutions. A novel web-based visual acuity test, validated in a healthy population, may be of great value in the follow-up of uveitis patients. Objective To determine the measurement accuracy of the unsupervised remote Easee web-based visual acuity test in uveitis patients, when compared to a conventional in-hospital assessment. Methods: Cross-sectional diagnostic accuracy study. Between April 2020 and September 2020, consecutive adult uveitis patients were invited for the web-based visual acuity test (index test) within two weeks prior to their conventional in-hospital assessment (reference test). Results: A total of 269 patients were invited by mail, of whom 84 visited the website (31%). Ultimately 98 eyes met the criteria for statistical analysis. The mean difference between the two tests was low and non-significant: 0.02 logMAR (SD 0.12, P = 0.085). The 95% limits of agreement ranged from -0.21 to 0.26 logMAR. No relevant differences were identified in clinical characteristics between subgroups with a good performance (i.e. difference between the tests <=0.15 logMAR) or underperformance (i.e. difference >0.15 logMAR) on the web-based test. Conclusion: The web-based visual acuity test is a promising tool to remotely assess visual acuity in the majority of uveitis patients, especially relevant when access to ophthalmic care is limited. No association between patient- or uveitis-related variables and (under)performance of the test were identified. These outcomes underline the potential of remote vision testing in other common ophthalmic conditions. A proper implementation of this web-based tool in health care could be of great value for revolutionizing teleconsultations.

中文翻译：

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对一种新型工具的评估，该工具可远程评估COVID-19大流行期间慢性葡萄膜炎患者的视敏度

背景：由于最近发生的COVID-19大流行而造成的限制促使远程医疗解决方案的部署。在健康人群中验证的新颖的基于网络的视敏度测试在葡萄膜炎患者的随访中可能具有重要价值。目的与常规的住院评估相比，确定无监督的基于Easee网络的远程视力测验在葡萄膜炎患者中的测量准确性。方法：横断面诊断准确性研究。在2020年4月至2020年9月之间，连续的成人葡萄膜炎患者在常规住院评估（参考测试）之前的两周内被邀请进行基于网络的视敏度测试（指数测试）。结果：总共邀请了269位患者进行邮寄邀请，其中84位访问了该网站（31％）。最终有98只眼睛符合统计分析的标准。两次测试之间的平均差异很小且不显着：0.02 logMAR（SD 0.12，P = 0.085）。协议的95％限制范围为-0.21至0.26 logMAR。在基于网络的测试中，在表现良好（即，测试之间的差异<= 0.15 logMAR）或表现不佳（即，差异> 0.15 logMAR）的亚组之间，在临床特征方面未发现相关差异。结论：基于网络的视敏度测试是一种可用于远程评估大多数葡萄膜炎患者视敏度的有前途的工具，尤其是在眼科护理受到限制的情况下。在患者或葡萄膜炎相关的变量与测试表现（不佳）之间未发现关联。这些结果强调了在其他常见眼科疾病中进行远程视力测试的潜力。