Abstract：
To investigate the changes in eyelid blinking dynamics after external dacryocystorhinostomy (DCR).
Prospective before-and-after study with follow-up.
Patients undergoing external DCR surgery for primary acquired nasolacrimal duct obstruction were observed using high-speed videography that recorded eyelid blinking of both eyes for a total duration of 4 minutes at a rate of 120 frames per second. These recordings were taken before the surgical procedure, on postoperative day 3, and then at 1 week, 1 month, and 3 months after the DCR surgery. A total of 3 random blinks were selected and isolated from each video recording for data analysis. For each blink, lagophthalmos and eyelid blinking velocity were calculated for the operated eye, and their values were then compared with those calculated for the contralateral, nonoperated eye.
Data were obtained for 22 patients. Operated eyes showed large postoperative lagophthalmos on postoperative day 3, with a mean of 56.58% ± 52.63% of the palpebral fissure height. Gradual improvement of the lagophthalmos occurred over the next follow-up visits, and reached a mean of 31.24% ± 36.71% at follow-up visit 3 months postoperatively. The velocity of eyelid blinking showed a significant reduction for the operated eyes, with gradual improvement over 3 months.
Postexternal DCR eyelid blinking changes included significant blink lagophthalmos with decreased velocity of eyelid blinking which gradually improved over the 3-month follow-up period. A longer follow-up period may be required to confirm if eyelid blinking lagophthalmos and velocity will return to baseline levels.
Prospective before-and-after study with follow-up.
Patients undergoing external DCR surgery for primary acquired nasolacrimal duct obstruction were observed using high-speed videography that recorded eyelid blinking of both eyes for a total duration of 4 minutes at a rate of 120 frames per second. These recordings were taken before the surgical procedure, on postoperative day 3, and then at 1 week, 1 month, and 3 months after the DCR surgery. A total of 3 random blinks were selected and isolated from each video recording for data analysis. For each blink, lagophthalmos and eyelid blinking velocity were calculated for the operated eye, and their values were then compared with those calculated for the contralateral, nonoperated eye.
Data were obtained for 22 patients. Operated eyes showed large postoperative lagophthalmos on postoperative day 3, with a mean of 56.58% ± 52.63% of the palpebral fissure height. Gradual improvement of the lagophthalmos occurred over the next follow-up visits, and reached a mean of 31.24% ± 36.71% at follow-up visit 3 months postoperatively. The velocity of eyelid blinking showed a significant reduction for the operated eyes, with gradual improvement over 3 months.
Postexternal DCR eyelid blinking changes included significant blink lagophthalmos with decreased velocity of eyelid blinking which gradually improved over the 3-month follow-up period. A longer follow-up period may be required to confirm if eyelid blinking lagophthalmos and velocity will return to baseline levels.
摘要：
目的：探讨鼻腔泪囊吻合术（DCR）后眼睑眨眼动力学的变化。
方法：前瞻性研究前后随访。
方法：使用高速摄像法观察因原发性获得性鼻泪管阻塞而接受外部DCR手术的患者，记录双眼眼睑眨眼的总持续时间为4分钟，速度为每秒120帧。这些记录是在手术前拍摄的，术后第3天，然后在1周，1个月,DCR手术后3个月。总共选择3次随机闪烁,并从每个视频记录中分离用于数据分析。每眨眼，计算手术眼睛的眼睑和眼睑眨眼速度，然后将它们的值与对侧计算的值进行比较，非手术眼
结果：获得了22例患者的数据。术后第3天，手术眼显示术后大眼球，平均为睑裂高度的56.58%±52.63%。在下一次随访中，眼底逐渐改善，术后3个月随访时平均为31.24%±36.71%。眼睑眨眼的速度显着降低了手术后的眼睛，在3个月内逐步改善。
结论：外部DCR眼睑眨眼后的变化包括明显的眨眼，眼睑眨眼速度降低，在3个月的随访期内逐渐改善。可能需要更长的随访期以确认眼睑眨眼和速度是否会恢复到基线水平。
方法：前瞻性研究前后随访。
方法：使用高速摄像法观察因原发性获得性鼻泪管阻塞而接受外部DCR手术的患者，记录双眼眼睑眨眼的总持续时间为4分钟，速度为每秒120帧。这些记录是在手术前拍摄的，术后第3天，然后在1周，1个月,DCR手术后3个月。总共选择3次随机闪烁,并从每个视频记录中分离用于数据分析。每眨眼，计算手术眼睛的眼睑和眼睑眨眼速度，然后将它们的值与对侧计算的值进行比较，非手术眼
结果：获得了22例患者的数据。术后第3天，手术眼显示术后大眼球，平均为睑裂高度的56.58%±52.63%。在下一次随访中，眼底逐渐改善，术后3个月随访时平均为31.24%±36.71%。眼睑眨眼的速度显着降低了手术后的眼睛，在3个月内逐步改善。
结论：外部DCR眼睑眨眼后的变化包括明显的眨眼，眼睑眨眼速度降低，在3个月的随访期内逐渐改善。可能需要更长的随访期以确认眼睑眨眼和速度是否会恢复到基线水平。
