Umibe Akiko, Fushiki Hiroaki, Tsunoda Reiko, Kuroda Tatsuaki, Kuroda Kazuhiro, Tanaka Yasuhiro
Department of Otorhinolaryngology, Head and Neck Surgery, Dokkyo Medical University Saitama Medical Center, Koshigaya-shi, Saitama, Japan.
Department of Otolaryngology, Mejiro University Ear Institute Clinic, Saitama-shi, Saitama, Japan.
JMIR Form Res. 2024 Jun 4;8:e53642. doi: 10.2196/53642.
The subjective visual vertical (SVV) test can evaluate otolith function and spatial awareness and is performed in dedicated vertigo centers using specialized equipment; however, it is not otherwise widely used because of the specific equipment and space requirements. An SVV test smartphone app was developed to easily perform assessments in outpatient facilities.
This study aimed to verify whether the SVV test smartphone app with commercially available virtual reality goggles can be used in a clinical setting.
The reference range was calculated for 15 healthy participants. We included 14 adult patients with unilateral vestibular neuritis, sudden sensorineural hearing loss with vertigo, and Meniere disease and investigated the correlation between the SVV test results and vestibular evoked myogenic potential (VEMP) results.
The SVV reference range of healthy participants for the sitting front-facing position was small, ranging from -2.6º to 2.3º. Among the 14 patients, 6 (43%) exceeded the reference range for healthy participants. The SVV of patients with vestibular neuritis and sudden sensorineural hearing loss tended to deviate to the affected side. A total of 9 (64%) had abnormal cervical VEMP (cVEMP) values and 6 (43%) had abnormal ocular VEMP (oVEMP) values. No significant difference was found between the presence or absence of abnormal SVV values and the presence or absence of abnormal cVEMP and oVEMP values; however, the odds ratios (ORs) suggested a higher likelihood of abnormal SVV values among those with abnormal cVEMP and oVEMP responses (OR 2.40, 95% CI 0.18-32.88; P>.99; and OR 2, 95% CI 0.90-4.45; P=.46, respectively).
The SVV app can be used anywhere and in a short period while reducing directional bias by using virtual reality goggles, thus making it highly versatile and useful as a practical otolith dysfunction screening tool.
主观视觉垂直线（SVV）测试可评估耳石功能和空间感知，通常在专门的眩晕中心使用专业设备进行；然而，由于对特定设备和空间的要求，该测试并未得到广泛应用。一款用于SVV测试的智能手机应用程序被开发出来，以便在门诊设施中轻松进行评估。
本研究旨在验证配备市售虚拟现实护目镜的SVV测试智能手机应用程序是否可用于临床环境。
计算了15名健康参与者的参考范围。我们纳入了14名患有单侧前庭神经炎、伴有眩晕的突发性感音神经性听力损失和梅尼埃病的成年患者，并研究了SVV测试结果与前庭诱发肌源性电位（VEMP）结果之间的相关性。
健康参与者在坐姿向前时的SVV参考范围较小，为-2.6°至2.3°。在这14名患者中，有6名（43%）超出了健康参与者的参考范围。前庭神经炎和突发性感音神经性听力损失患者的SVV倾向于向患侧偏移。共有9名（64%）患者的颈肌前庭诱发肌源性电位（cVEMP）值异常，6名（43%）患者的眼肌前庭诱发肌源性电位（oVEMP）值异常。SVV值异常与否与cVEMP和oVEMP值异常与否之间未发现显著差异；然而，优势比（OR）表明，cVEMP和oVEMP反应异常的患者中SVV值异常的可能性更高（OR分别为2.40，95%CI为0.18 - 32.88；P>.99；以及OR为2，95%CI为0.90 - 4.45；P = 0.46）。
SVV应用程序可以在任何地点短时间内使用，同时通过使用虚拟现实护目镜减少方向偏差，因此作为一种实用的耳石功能障碍筛查工具，具有很高的通用性和实用性。
