穿透性角膜移植术后的准分子原位角膜磨镶术

Laser in situ keratomileusis after penetrating keratoplasty.

作者信息

Nassaralla B R, Nassaralla J J

机构信息

Goiania Eye Institute, Department of Cornea and Refractive Surgery, GO, Brazil.

出版信息

J Refract Surg. 2000 Jul-Aug;16(4):431-7. doi: 10.3928/1081-597X-20000701-05.

DOI:10.3928/1081-597X-20000701-05

PMID:10939722

Abstract

PURPOSE

To determine the safety, efficacy, predictability, and stability of laser in situ keratomileusis (LASIK) to correct myopia and myopic astigmatism in eyes with prior penetrating keratoplasty.

METHODS

Eight eyes of 8 patients with penetrating keratoplasty had significant postoperative refractive error. Each eye received LASIK 1 year or more after penetrating keratoplasty. All were followed for 6 months or more. All patients were treated with the Chiron Technolas 217 excimer laser and the Automated Corneal Shaper microkeratome.

RESULTS

Mean spherical equivalent refraction decreased from -4.50 D (range, -3.00 to -7.25 D) to -0.75 D (range, -1.50 to +0.50 D) and the mean preoperative astigmatism decreased from 3.50 D (range, 1.50 to 5.00 D) to 1.25 D (range, 0.75 to 2.00 D). Uncorrected visual acuity improved by at least two Snellen lines in all eyes. Best spectacle-corrected visual acuity did not change in four eyes (50%) and improved in three eyes (37.5%).

CONCLUSION

LASIK effectively reduced low and moderate myopia and myopic astigmatism following penetrating keratoplasty.

摘要

目的

确定准分子原位角膜磨镶术（LASIK）矫正既往有穿透性角膜移植术的眼睛的近视和近视散光的安全性、有效性、可预测性和稳定性。

方法

8例穿透性角膜移植术后的患者的8只眼睛存在明显的术后屈光不正。每只眼睛在穿透性角膜移植术后1年或更长时间接受LASIK手术。所有患者均随访6个月或更长时间。所有患者均使用Chiron Technolas 217准分子激光和自动角膜板层刀进行治疗。

结果

平均等效球镜度从-4.50 D（范围，-3.00至-7.25 D）降至-0.75 D（范围，-1.50至+0.50 D），术前平均散光从3.50 D（范围，1.50至5.00 D）降至1.25 D（范围，0.75至2.00 D）。所有眼睛的裸眼视力至少提高了两行Snellen视力表视力。最佳矫正视力在4只眼睛（50%）中未改变，在3只眼睛（37.5%）中提高。