集合不足型间歇性外斜视患者阅读表现与扫视非共轭性之间的关系
Relationship between reading performance and saccadic disconjugacy in patients with convergence insufficiency type intermittent exotropia.
作者信息
Hirota Masakazu, Kanda Hiroyuki, Endo Takao, Lohmann Tibor Karl, Miyoshi Tomomitsu, Morimoto Takeshi, Fujikado Takashi
机构信息
Department of Applied Visual Science, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita-shi, Osaka, 565-0871, Japan.
Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita-shi, Osaka, Japan.
出版信息
Jpn J Ophthalmol. 2016 Jul;60(4):326-32. doi: 10.1007/s10384-016-0444-2. Epub 2016 Apr 25.
PURPOSE
To determine the relationship between re-reading the same line and saccadic disconjugacy in patients with convergence insufficiency-type intermittent exotropia [CI-type X(T)].
METHODS
Eight patients with CI-type X(T) and ten healthy orthophoric individuals were studied. Video-oculography was used to assess the eye movements during the reading of a Japanese novel displayed on a 23-in. liquid crystal monitor placed 60 cm from the eyes. The sentences were displayed horizontally and read from left to right. The number of unintentional re-readings of the same line was counted, and the disconjugacy at the median of the saccade between the end of a line and the next line was determined.
RESULTS
The number of re-readings of the same line in patients with CI-type X(T) was 4.9 ± 2.3 times which was significantly higher than that in the controls at 0.2 ± 0.4 times (P < 0.001). The saccadic disconjugacy was significantly larger in patients with CI-type X(T) at -1.70° ± 0.72° than that in the controls at -0.40°± 0.30° (P < 0.001). The number of re-readings of the same line was significantly and positively correlated with the saccadic disconjugacy (R = 0.84, R (2) = 0.71, P < 0.01).
CONCLUSIONS
The results of our study indicate that saccadic disconjugacy is associated with re-reading the same line in patients with CI-type X(T).
目的
确定集合不足型间歇性外斜视[CI型X(T)]患者重读同一行与眼跳非共轭性之间的关系。
方法
对8例CI型X(T)患者和10例健康正视者进行研究。使用视频眼动图评估在距离眼睛60厘米处的23英寸液晶显示器上显示的日本小说阅读过程中的眼动情况。句子水平显示，从左到右阅读。统计同一行无意重读的次数，并确定一行末尾与下一行之间扫视中点处的非共轭性。
结果
CI型X(T)患者同一行的重读次数为4.9±2.3次，显著高于对照组的0.2±0.4次(P<0.001)。CI型X(T)患者的眼跳非共轭性显著大于对照组，分别为-1.70°±0.72°和-0.40°±0.30°(P<0.001)。同一行的重读次数与眼跳非共轭性显著正相关(R=0.84，R(2)=0.71，P<0.01)。
结论
我们的研究结果表明，CI型X(T)患者的眼跳非共轭性与重读同一行有关。
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