Mortensen J, Ohrström A
Department of Ophthalmology, County Council Hospital, Ryhov, Jönköping, Sweden.
J Refract Corneal Surg. 1994 May-Jun;10(3):368-72.
Five eyes with keratoconus that were scheduled for penetrating keratoplasty were treated instead with excimer laser photorefractive keratectomy to reduce the steepness of the cone. The follow up after 6 to 12 months is reported here.
A 193-nanometer excimer laser system VISX 20/20 was used for correction of myopia or astigmatism. The patients had a complete ophthalmological examination including slit-lamp microscopy and videokeratography. The patients were followed with six examinations during a period of at least 6 months.
In four eyes, a reduction of the astigmatism was achieved with an increase of visual acuity. There were no problems with wound healing or any signs that the excimer adversely affected the cornea or activated the keratoconus disease process.
The treatment of keratoconus with excimer laser has been regarded as seriously contraindicated on a speculative basis. This risk seems to be exaggerated.
五例计划行穿透性角膜移植术的圆锥角膜患者改为接受准分子激光屈光性角膜切除术以降低圆锥的陡峭度。本文报告6至12个月后的随访情况。
使用VISX 20/20型193纳米准分子激光系统矫正近视或散光。患者接受了包括裂隙灯显微镜检查和角膜地形图检查在内的全面眼科检查。在至少6个月的时间里对患者进行了六次检查。
四只眼睛的散光得到降低，视力提高。伤口愈合没有问题，也没有任何迹象表明准分子激光对角膜有不利影响或激活圆锥角膜疾病进程。
基于推测，准分子激光治疗圆锥角膜被视为严重禁忌。这种风险似乎被夸大了。
