PDF(Pubmed)
Abstract：
UNASSIGNED: Acute acquired concomitant esotropia induced by excessive digital device usage, especially smartphones (SAACE), has been increasing over the past few years. Convergence spasm induced by excessive near work has been suggested as a mechanism. Anatomical differences could also potentially contribute to SAACE onset. The present study investigated the conformation of horizontal recti between SAACE patients and normal subjects.
UNASSIGNED: In 15 SAACE patients (SAACE group), the distances between the limbus and insertion of the horizontal recti (LI distance) and the widths of horizontal recti on the insertion (insertion width) were measured. The control group consisted of 30 patients who underwent retinal detachment surgery. Differences in LI distances and insertion widths were compared between SAACE and control groups.
UNASSIGNED: While there were no differences between the two groups for LI distances and insertion widths of lateral recti, there were significantly shorter LI distances for the medial recti in the SAACE group (P<0.05). Moreover, the SAACE group tended to exhibit larger insertion widths of the medial recti. Medial/lateral ratio of LI distances were significantly lower and insertion widths were significantly higher in the SAACE compared to the control group (P<0.05).
UNASSIGNED: Based on the observations of more anterior insertion and larger muscle widths, this suggests there are stronger forces of medial recti in SAACE. In addition to excessive accommodation followed by increases in medial recti tonus, the results also suggest that an anatomical imbalance between lateral and medial recti contributes to esotropia onset following excessive near work.
UNASSIGNED: In 15 SAACE patients (SAACE group), the distances between the limbus and insertion of the horizontal recti (LI distance) and the widths of horizontal recti on the insertion (insertion width) were measured. The control group consisted of 30 patients who underwent retinal detachment surgery. Differences in LI distances and insertion widths were compared between SAACE and control groups.
UNASSIGNED: While there were no differences between the two groups for LI distances and insertion widths of lateral recti, there were significantly shorter LI distances for the medial recti in the SAACE group (P<0.05). Moreover, the SAACE group tended to exhibit larger insertion widths of the medial recti. Medial/lateral ratio of LI distances were significantly lower and insertion widths were significantly higher in the SAACE compared to the control group (P<0.05).
UNASSIGNED: Based on the observations of more anterior insertion and larger muscle widths, this suggests there are stronger forces of medial recti in SAACE. In addition to excessive accommodation followed by increases in medial recti tonus, the results also suggest that an anatomical imbalance between lateral and medial recti contributes to esotropia onset following excessive near work.
摘要：
■过度使用数字设备引起的急性获得性伴发内斜视，尤其是智能手机（SAACE），在过去的几年里一直在增加。过度近功引起的收敛痉挛已被认为是一种机制。解剖差异也可能导致SAACE发作。本研究调查了SAACE患者与正常受试者之间水平直肠的构象。
■在15名SAACE患者（SAACE组）中，测量角膜缘与水平直肠的插入之间的距离（LI距离）以及插入时水平直肠的宽度（插入宽度）。对照组包括30例接受视网膜脱离手术的患者。在SAACE组和对照组之间比较LI距离和插入宽度的差异。
■虽然两组的LI距离和横向直管的插入宽度没有差异，SAACE组直肠内侧LI距离明显较短(P<0.05)。此外，SAACE组倾向于表现出较大的内侧直肠插入宽度。与对照组相比，SAACE中LI距离的内侧/外侧比率显着降低，插入宽度显着升高（P<0.05）。
■根据更多的前插入和更大的肌肉宽度的观察，这表明SAACE中内侧直肌的力量更强。除了过度调节，然后内侧直肠张力增加，结果还表明，外侧直肌和内侧直肌之间的解剖失衡导致过度近程工作后内斜视的发作。
■在15名SAACE患者（SAACE组）中，测量角膜缘与水平直肠的插入之间的距离（LI距离）以及插入时水平直肠的宽度（插入宽度）。对照组包括30例接受视网膜脱离手术的患者。在SAACE组和对照组之间比较LI距离和插入宽度的差异。
■虽然两组的LI距离和横向直管的插入宽度没有差异，SAACE组直肠内侧LI距离明显较短(P<0.05)。此外，SAACE组倾向于表现出较大的内侧直肠插入宽度。与对照组相比，SAACE中LI距离的内侧/外侧比率显着降低，插入宽度显着升高（P<0.05）。
■根据更多的前插入和更大的肌肉宽度的观察，这表明SAACE中内侧直肌的力量更强。除了过度调节，然后内侧直肠张力增加，结果还表明，外侧直肌和内侧直肌之间的解剖失衡导致过度近程工作后内斜视的发作。
