Taneri Suphi, Kiessler Saskia, Rost Anika, Dick H Burkhard
J Refract Surg. 2017 Jan 1;33(1):50-52. doi: 10.3928/1081597X-20161019-03.
To report a case of unilateral corneal ectasia following LASIK surgery combined with prophylactic corneal cross-linking (CXL) in a young patient.
Case report.
Preoperative topography was unremarkable in both eyes with a minimum corneal thickness of 554 μm in the right eye and 546 μm in the left eye. Preoperative corrected distance visual acuity (CDVA) was 1.0 (20/20 Snellen) in both eyes with a refraction of +1.25 -2.75 × 10 in the right eye and +0.50 -2.00 × 163 in the left eye. LASIK combined with CXL was uneventful. After 12 months, postoperative topography was unremarkable with an uncorrected distance visual acuity (UDVA) of 1.0 in both eyes. Two years after surgery, the patient presented with a loss of vision (UDVA 0.25) and an inferior steepening on topography in the left eye. Standard CXL was performed to arrest further progression.
This report illustrates that the currently used prophylactic CXL protocol in combination with LASIK may not be effectively preventing corneal ectasia in every case. [J Refract Surg. 2017;33(1):50-52.].
报告一例年轻患者在接受准分子激光原位角膜磨镶术（LASIK）联合预防性角膜交联术（CXL）后发生单眼角膜扩张的病例。
病例报告。
术前双眼角膜地形图无明显异常，右眼最小角膜厚度为554μm，左眼为546μm。术前双眼矫正远视力（CDVA）均为1.0（20/20 Snellen视力表），右眼屈光度为+1.25 -2.75×10，左眼为+0.50 -2.00×163。LASIK联合CXL手术过程顺利。12个月后，术后角膜地形图无明显异常，双眼裸眼远视力（UDVA）均为1.0。术后两年，患者左眼出现视力下降（UDVA 0.25），角膜地形图显示下方变陡。遂行标准CXL术以阻止病情进一步发展。
本报告表明，目前LASIK联合使用的预防性CXL方案可能无法在所有情况下有效预防角膜扩张。[《屈光手术杂志》。2017年；33(1):50 - 52。]
