Touboul D, Pinsard L, Mesplier N, Smadja D, Colin J
Service d'ophtalmologie, centre de référence national du Kératocône, centre Xavier-François-Michelet, site Pellegrin, CHU de Bordeaux, place Amélie-Raba-Léon, 33000 Bordeaux, France.
J Fr Ophtalmol. 2012 Mar;35(3):212-9. doi: 10.1016/j.jfo.2011.08.006. Epub 2012 Feb 28.
Management of irregular astigmatism with intracorneal rings segments is an intrastromal additive technique developed initially for myopia but eventually popularized for keratoconus and post LASIK ectasia. ICR's are indicated for rigid contact lens intolerance, as an alternative to corneal transplantation. The mechanism of action is complex and involves biomechanical changes leading to a centering and a flattening of the ectasia. The surgical procedure has become much easier thanks to the use of femtosecond lasers. Individualized implantation strategies, based on each patient's topographic and tomographic pattern, are constantly evolving. Patients' refraction and vision are usually improved in more than 70% of cases. Complications remain very rare. Intracorneal ring segments can often be combined with other types of keratoplasty, usually in a sequential fashion, so as to optimize functional results.
使用角膜内环片治疗不规则散光，是一种基质内加法技术，最初用于治疗近视，最终在圆锥角膜和准分子激光原位角膜磨镶术（LASIK）后角膜扩张症中得到推广。角膜内环片适用于不能耐受硬性接触镜的患者，可作为角膜移植的替代方法。其作用机制复杂，涉及生物力学变化，从而使扩张部位居中并变平。由于使用了飞秒激光，手术过程变得更加容易。基于每位患者的地形图和断层扫描模式的个性化植入策略也在不断发展。超过70%的病例中患者的屈光和视力通常会得到改善。并发症仍然非常罕见。角膜内环片通常可以与其他类型的角膜移植术联合使用，通常采用序贯方式，以优化功能效果。
