Peşan Özge Kale, Köycü Alper, Erbek Hatice Seyra, Çakmak Eda, Leyla Asena, Akkoyun İmren
Department of Otorhinolaryngology, Başkent University School of Medicine, Ankara, Türkiye.
Department of Otolaryngology Head and Neck Surgery, Başkent University Faculty of Medicine, Ankara, Türkiye.
J Int Adv Otol. 2025 Jul 21;21(4):1-7. doi: 10.5152/iao.2025.241734.
The aim of this study was to determine whether there are differences in the balance system between individuals with vision loss and a healthy control group using the video head impulse test (vHIT), cervical vestibular evoked myogenic potentials (cVEMP) and ocular vestibular evoked myogenic potentials (oVEMP) tests. METHODS: The study included 23 individuals diagnosed with bilateral low vision, 20 individuals diagnosed with bilateral blindness, and 50 healthy control subjects. vHIT, cVEMP, and oVEMP tests were applied to all participants to evaluate the vestibular system. In addition to the standard vHIT, 2-condition vHIT (in the dark and in daylight without a target) was performed on the control group to evaluate the effect of visual input. RESULTS: In vHIT responses, a significant difference in vestibulo-ocular reflex (VOR) gains was detected in the comparison between the bilateral low vision, bilateral blind, and control groups in all semicircular canals (SSC) (P < .001). When the vHIT responses in the 3 conditional groups of the control group (untargeted daylight, darkness, and standard) were examined, a significant difference in VOR gains was detected in the comparison of all 3 groups in the entire SSC (P < .001). CONCLUSION: The findings of statistically significantly low VOR gains obtained in individuals with low vision and the blind group showed the great effect of visual input on the vestibular system. This hypothesis was also supported by the results of vHIT, which was applied in 3 stages (dark, untargeted daylight, and standard) in healthy individuals.
本研究的目的是使用视频头脉冲试验（vHIT）、颈前庭诱发肌源性电位（cVEMP）和眼前庭诱发肌源性电位（oVEMP）测试，确定视力丧失个体与健康对照组之间的平衡系统是否存在差异。方法：该研究纳入了23名被诊断为双侧低视力的个体、20名被诊断为双侧失明的个体以及50名健康对照者。对所有参与者进行vHIT、cVEMP和oVEMP测试以评估前庭系统。除了标准vHIT外，对对照组进行了双条件vHIT（在黑暗中和无目标的日光下）以评估视觉输入的影响。结果：在vHIT反应中，在所有半规管（SSC）中，双侧低视力、双侧失明和对照组之间的比较中检测到前庭眼反射（VOR）增益存在显著差异（P <.001）。当检查对照组的3个条件组（无目标日光、黑暗和标准）中的vHIT反应时，在整个SSC中所有3组的比较中检测到VOR增益存在显著差异（P <.001）。结论：低视力个体和失明组中获得的统计学上显著较低的VOR增益结果表明视觉输入对前庭系统有很大影响。健康个体分三个阶段（黑暗、无目标日光和标准）进行的vHIT结果也支持了这一假设。
