Salz J J
University of Southern California, Los Angeles.
J Refract Corneal Surg. 1994 Jan-Feb;10(1):36-7.
During excimer laser photorefractive keratectomy, central Bowman's layer and superficial stroma are removed. A potential disadvantage of this technique is whether proper epithelization of the cornea will occur in the event of a corneal abrasion. A potential advantage of photorefractive keratectomy over radial keratotomy in the event of blunt trauma is the presumably sound structural integrity of the cornea following superficial removal of stroma in photorefractive keratectomy compared to the weakened cornea following deep incisions in radial keratotomy.
We report two patients who sustained corneal abrasions from blunt trauma to the eye and orbit following photorefractive keratectomy--one following a fist injury and the other following a karate kick.
In both patients, the corneal abrasions healed without incident and without recurrent erosions and both corneas remained intact.
Corneal abrasion following trauma in two patients who has undergone photorefractive keratectomy healed as expected in a normal cornea. Although it is uncertain whether the trauma in these patients would have been sufficient to rupture radial keratotomy incisions, as would be expected from a superficial photorefractive keratectomy, the corneas remained intact following blunt trauma.
在准分子激光屈光性角膜切削术中，中央Bowman层和浅层基质被去除。该技术的一个潜在缺点是在角膜擦伤的情况下角膜是否会发生正常上皮化。与放射状角膜切开术相比，在钝性外伤时屈光性角膜切削术的一个潜在优势是，与放射状角膜切开术深切口后角膜变弱相比，屈光性角膜切削术浅层基质去除后角膜的结构完整性可能良好。
我们报告了2例在屈光性角膜切削术后因眼部和眼眶钝性外伤导致角膜擦伤的患者——1例因拳击伤，另1例因空手道踢伤。
2例患者的角膜擦伤均顺利愈合，无复发性糜烂，且角膜均保持完整。
2例接受屈光性角膜切削术的患者外伤后角膜擦伤如正常角膜一样如期愈合。虽然不确定这些患者的外伤是否足以使放射状角膜切开术切口破裂，正如浅表性屈光性角膜切削术所预期的那样，但钝性外伤后角膜仍保持完整。
