Manche E E, Carr J D, Haw W W, Hersh P S
Department of Ophthalmology, Stanford University School of Medicine, California 94305-5308, USA.
West J Med. 1998 Jul;169(1):30-8.
Excimer laser photorefractive keratectomy and excimer laser in situ keratomileusis are relatively new treatment modalities that can be used to correct refractive errors of the eye. They are most commonly used to correct myopia (nearsightedness) but can also be used to correct hyperopia (farsightedness) and astigmatism. The excimer laser alters the refractive state of the eye by removing tissue from the anterior cornea through a process known as photoablative decomposition. This process uses ultraviolet energy from the excimer laser to disrupt chemical bonds in the cornea without causing any thermal damage to surrounding tissue. The modified anterior corneal surface enables light to be focused on the retina, thereby reducing or eliminating the dependence on glasses and contact lenses. We discuss in detail all aspects of excimer laser refractive surgery--techniques, indications and contraindications, clinical outcomes, and complications.
准分子激光屈光性角膜切削术和准分子激光原位角膜磨镶术是相对较新的治疗方式，可用于矫正眼部屈光不正。它们最常用于矫正近视（近视眼），但也可用于矫正远视（远视眼）和散光。准分子激光通过一种称为光消融分解的过程从前角膜去除组织，从而改变眼睛的屈光状态。该过程利用准分子激光的紫外线能量破坏角膜中的化学键，而不会对周围组织造成任何热损伤。经过改变的前角膜表面使光线能够聚焦在视网膜上，从而减少或消除对眼镜和隐形眼镜的依赖。我们将详细讨论准分子激光屈光手术的各个方面——技术、适应证和禁忌证、临床结果以及并发症。
