Kakizaki Hirohiko, Zako Masahiro, Iwaki Masayoshi
Department of Ophthalmology, Aichi Medical University, Nagakute-cho, Aichi-gun, Aichi-ken, Japan.
Clin Ophthalmol. 2007 Jun;1(2):141-7.
The lower eyelid retractors consist of double layers, the posterior layer of which is the main tractional component. Therefore, shortening of the posterior layer of the lower eyelid retractors causes lower eyelid retraction or cicatricial entropion. Based on this concept, we report a modified lower eyelid lengthening surgery involving complete recession of the posterior layer of the lower eyelid retractors by way of a transcutaneous approach that leaves the palpebral conjunctiva intact and inserts ear cartilage as a rigid spacer between the lower edge of the tarsal plate and the recessed anterior layer of the lower eyelid retractors. This procedure completely extirpated the preoperative maladjusted states of lower eyelid retraction and cicatricial entropion. Our procedure also prevented postoperative discomfort of the ocular surface due to the intact palpebral conjunctiva. As well, lower eyelid mobility and contour were good and within their respective permissible ranges. The lower eyelid lengthening surgery focusing on the posterior layer of the lower eyelid retractors using auricular cartilage via a transcutaneous approach is a useful procedure for lower eyelid retraction or cicatricial entropion.
下睑缩肌由双层组成,其后层是主要的牵引成分。因此,下睑缩肌后层缩短会导致下睑退缩或瘢痕性睑内翻。基于这一概念,我们报告一种改良的下睑延长手术,该手术通过经皮入路使下睑缩肌后层完全后徙,保留睑结膜完整,并将耳软骨作为刚性间隔物插入睑板下缘与后徙的下睑缩肌前层之间。该手术完全消除了术前下睑退缩和瘢痕性睑内翻的失调状态。我们的手术还因睑结膜完整而避免了术后眼表不适。此外,下睑活动度和外形良好,均在各自允许范围内。经皮入路使用耳软骨对下睑缩肌后层进行的下睑延长手术,对于下睑退缩或瘢痕性睑内翻是一种有效的手术方法。