Department of Ophthalmology, Dongguk University Ilsan Hospital, Goyang, South Korea.
Graefes Arch Clin Exp Ophthalmol. 2013 Aug;251(8):2047-50. doi: 10.1007/s00417-013-2353-0. Epub 2013 Apr 28.
To study the changes in the location of the equator and the new insertion of extraocular muscle after recession surgery in a rabbit model.
An experimental study was performed in ten eyes of five rabbits. Eyes were divided into two groups according to the amount of recession. In right eyes, 5 mm superior recti (SR) muscle recession, approximately 2 mm posterior to the equator, was performed (5 mm recession group), while in the left eyes, 3 mm recession was performed to the location of the equator (3 mm recession group). We measured the distance of the equator from the limbus, as well as the distance between the superior rectus insertion and the equator. The preoperative measurements were compared with the results 2 months after the surgery. The change in location of the superior rectus and the equator was compared between the two eyes.
The recessed SR muscle did not show any significant change in location in both groups (p = 0.18 and 0.16 respectively). However, the location of the equator of rabbit eye showed movement of about 1 mm posterior to the initial location with the growth of the eyeballs (p = 0.04 and 0.03, respectively).
The location of the equator moved posteriorly at 2 months postoperatively in young rabbit model while the insertion of the recessed SR did not show any significant movement.
研究兔模型中眼外肌后退术后赤道位置的变化和新插入点。
对 5 只兔子的 10 只眼进行了一项实验研究。根据后退量将眼睛分为两组。右眼行 5mm 上直肌（SR）后退，约后退至赤道后 2mm（5mm 后退组），左眼行 3mm 后退至赤道（3mm 后退组）。测量赤道距角膜缘的距离以及上直肌止点与赤道的距离。将术前测量值与术后 2 个月的结果进行比较。比较双眼上直肌和赤道位置的变化。
两组中后退的 SR 肌肉位置均无明显变化（p=0.18 和 0.16）。然而，随着眼球的生长，兔眼赤道的位置向后移动了约 1mm（p=0.04 和 0.03）。
在年轻兔模型中，术后 2 个月赤道位置向后移动，而后退的 SR 插入点没有明显移动。
