ABSTRACT

Saccadic eye movement plays an important role in the rapid movement of the eyes to visual targets; however, it has not been fully investigated in patients with an orbital floor fracture. Thus, this study investigated saccadic eye movement before and after surgery in patients with an orbital floor fracture. The saccadic peak velocity (PV) was recorded using an eye-tracking device before and after surgery in nine eyes of nine patients with an orbital floor fracture. The type of fracture was a depressed fragment fracture in all cases, and there was no trap-door fracture. Ocular motility and diplopia were evaluated by the Hess area ratio (HAR%) and the scoring of binocular single vision (BSV). The preoperative HAR% and those at 1 month post-surgery and the final post-surgery observation were 62 ± 6%, 83 ± 11%, and 91 ± 8%, respectively. The preoperative, 1 month post-surgery, and final observation post-surgery BSV scores were 34 ± 18, 46 ± 8, and 50 ± 8 points, respectively. The postoperative HAR% and BSV were significantly improved at the final post-surgery observation (p < .05 each). The saccadic PVs of adduction, abduction, and downgaze before and after surgery were not significantly different in both the non-injured eyes and the injured eyes. However, the upgaze saccadic PVs at 1 month and the final post-surgery observation in the injured eyes were significantly increased (p < .05 each). The saccadic PV may be useful to evaluate detailed and precise extraocular muscle function before and after surgery for orbital floor fractures.

摘要

眼球扫视运动在眼睛快速移动到视觉目标中起重要作用；然而，它尚未在眼眶底骨折患者中得到充分研究。因此，本研究调查了眼眶底骨折患者手术前后的眼球运动。在 9 名眶底骨折患者的 9 只眼中，使用眼动追踪装置在手术前后记录眼跳峰值速度 (PV)。骨折类型均为凹陷性碎片骨折，无活板门骨折。通过Hess面积比（HAR％）和双眼单视评分（BSV）评估眼球运动和复视。术前 HAR% 和术后 1 个月及术后最终观察值分别为 62 ± 6%、83 ± 11% 和 91 ± 8%。术前、术后 1 个月和术后最终观察 BSV 评分分别为 34 ± 18、46 ± 8 和 50 ± 8 分。术后 HAR% 和 BSV 在最后的术后观察中显着改善（p < .05 每个）。非损伤眼和损伤眼手术前后内收、外展和向下注视的眼跳 PV 均无显着差异。然而，1 个月时的上视扫视 PV 和受伤眼的最终术后观察显着增加（均p < .05）。眼跳 PV 可用于评估眶底骨折手术前后详细和精确的眼外肌功能。