Takagi Mari, Kojima Takashi, Ichikawa Kei, Tanaka Yoshiki, Kato Yukihito, Horai Rie, Tamaoki Akeno, Ichikawa Kazuo
Department of Ophthalmology, Japan Community Healthcare Organization Chukyo Hospital, Nagoya, Japan.
Department of Ophthalmology, Japanese Red Cross Gifu Hospital, Gifu, Japan.
J Ophthalmol. 2017;2017:3489373. doi: 10.1155/2017/3489373. Epub 2017 Jan 22.
The current study reports comparing the postoperative mechanical properties of the anterior capsule between femtosecond laser capsulotomy (FLC) and continuous curvilinear capsulorhexis (CCC) of variable size and shape in porcine eyes. All CCCs were created using capsule forceps. Irregular or eccentric CCCs were also created to simulate real cataract surgery. For FLC, capsulotomies 5.3 mm in diameter were created using the LenSx® (Alcon) platform. Fresh porcine eyes were used in all experiments. The edges of the capsule openings were pulled at a constant speed using two L-shaped jigs. Stretch force and distance were recorded over time, and the maximum values in this regard were defined as those that were recorded when the capsule broke. There was no difference in maximum stretch force between CCC and FLC. There were no differences in circularity between FLC and same-sized CCC. However, same-sized CCC did show significantly higher maximum stretch forces than FLC. Teardrop-shaped CCC showed lower maximum stretch forces than same-sized CCC and FLC. Heart-shaped CCC showed lower maximum stretch forces than same-sized CCC. Conclusively, while capsule edge strength after CCC varied depending on size or irregularities, FLC had the advantage of stable maximum stretch forces.
本研究报告了比较猪眼中飞秒激光晶状体囊切开术（FLC）与不同大小和形状的连续环形撕囊术（CCC）术后前囊膜的机械性能。所有CCC均使用囊镊制作。还制作了不规则或偏心的CCC以模拟实际白内障手术。对于FLC，使用LenSx®（爱尔康）平台制作直径5.3毫米的囊切开术。所有实验均使用新鲜猪眼。使用两个L形夹具以恒定速度拉动囊开口的边缘。记录拉伸力和距离随时间的变化，这方面的最大值定义为囊破裂时记录的值。CCC和FLC之间的最大拉伸力没有差异。FLC与相同大小的CCC之间的圆形度没有差异。然而，相同大小的CCC确实显示出比FLC显著更高的最大拉伸力。泪滴形CCC显示出比相同大小的CCC和FLC更低的最大拉伸力。心形CCC显示出比相同大小的CCC更低的最大拉伸力。总之，虽然CCC术后囊边缘强度因大小或不规则性而异，但FLC具有最大拉伸力稳定的优势。
