Correlation of saccade amplitude during refusion with the fusional convergence amplitude in patients with intermittent exotropia
Correlation of saccade amplitude during refusion with the fusional convergence amplitude in patients with intermittent exotropia
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间歇性外斜视患者回扫时扫视幅度与融合会聚幅度的相关性
DOI：
10.1080/09273972.2022.2097708
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发表时间：
2022
期刊：
影响因子：
0.9
通讯作者：
Hayashi Atsushi
中科院分区：
文献类型：
--
作者：
Kakeue Ken;Mihara Miharu;Tamura Ryoi;Hayashi Atsushi
为探讨间歇性外斜视（IXT）患者融合会聚幅度与再融合时眼跳的相关性，以及抑制引起的眼跳差异，采用同视机测量融合会聚幅度。在15名患有IXT的患者（平均年龄18.1 ± 11.0岁，范围8-54岁）中评估了抑制，这些患者在外斜视期间具有复视。我们进行了遮盖-揭开测试，并使用眼动追踪系统记录了从外斜视到双眼注视的转换过程中的眼跳。我们分析了融合会聚幅度与眼跳峰值速度（PV）、眼跳幅度和融合眼跳幅度之间的相关性。在15例IXT患者中，融合会聚幅度中位数为14（范围0-60）°，11例患者被证实受到抑制。当主视眼去除遮盖物时，融合会聚幅度与扫视PV和非主视眼的幅度呈正相关（分别为r = 0.570，p = 0.042和r = 0.669，p = 0.012）。IXT患者的平均眼跳PV、平均眼跳幅度和融合的平均眼跳幅度在有无抑制之间无显著差异，融合会聚幅度与眼跳相关。因此，在再融合期间的扫视可以用于定量地评估感觉和/或运动融合。
In patients with intermittent exotropia (IXT), to investigate the correlation between fusional convergence amplitude and saccade during refusion, as well as the differences in saccade caused by suppression.We measured the fusional convergence amplitude using a synoptophore. Suppression was assessed in 15 patients with IXT (mean age 18.1 ± 11.0 yrs, range 8–54 yrs) having diplopia during exotropia. We performed the cover-uncover test and recorded the saccade during the shift from exotropia to binocular fixation using an eye-tracking system. We analyzed the correlation between the fusional convergence amplitude on the one hand and the saccade peak velocity (PV), the saccade amplitude, and the saccade amplitude of the fusion on the other. We also investigated the difference of those saccade variables between patients with and without suppression.In 15 patients with IXT, the median fusional convergence amplitude was 14 (range 0–60) °, and suppression was confirmed in 11 patients. When the cover was removed from the dominant eye, the fusional convergence amplitude showed a positive correlation with the saccade PV and the amplitude in non-dominant eye (r = 0.570, p = 0.042 and r = 0.669, p = 0.012, respectively). The mean saccade PV, the mean saccade amplitude and the mean saccade amplitude of the fusion were not significantly different with the presence or the absence of the suppression.The fusional convergence amplitude was correlated with saccade in patients with IXT. The saccade during refusion can thus be used to quantitatively evaluate sensory and/or motor fusion.
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DOI：
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