高度近视波前引导的LASIK后屈光回退角膜后表面形态变化  

Changes of corneal posterior surface of regression after wavefront-guided LASIK for high myopia

作　　者：郑晓龙 刘晓斌 贺玲 田芳 宋海云 

机构地区：[1]解放军第371医院眼科,河南省新乡市453000

出　　处：《眼科新进展》2010年第10期969-971,共3页Recent Advances in Ophthalmology

摘　　要：目的观察高度近视波前引导的LASIK后屈光回退角膜后表面屈光力和后高度的变化及后表面高度最大值与角膜厚度最薄点的关系。方法采用眼前节全景仪测量13眼高度近视波前引导的LASIK后屈光回退患者的角膜后表面屈光力及后高度值,对这些参数进行统计学分析。结果本次选取的46例(90眼)患者中术后12个月时发生屈光回退患者8例13眼。13眼术后12个月时角膜后表面屈光力及后高度值均比术前增加,差异均有统计学意义(均为P<0.05)。角膜后表面顶点和最大高度的平均变化值分别为(3.21±1.62)μm和(2.30±1.11)μm,高于正常眼角膜后表面顶点和最大高度的平均变化值,但差异均无统计学意义(均为P>0.05)。角膜后表面高度最大值与角膜厚度最薄点均不在同一位置。结论重视高度近视波前引导的LASIK后出现屈光回退时角膜后表面屈光力及后高度的变化,防止或及时发现术后圆锥角膜。Objective To investigate changes of refractive power of corneal posterior surface and corneal posterior elevation with refractive regression after wavefront-guided LASIK for high myopia,and explore the relation between the maximum height of posterior surface and the thinnest point of corneal thickness.Methods Refractive powers of corneal posterior surface and corneal posterior elevation in 13 eyes were detected in high myopic patients with wavefront-guided LASIK by anterior segment panoramic apparatus.All these data were statistical analyzed.Results In 46 cases（90 eyes）,there were 8 cases（13 eyes）with refractive regression at postoperative 12 months.Refractive powers of corneal posterior surface and corneal posterior elevation of 13 eyes were increased at postoperative 12 months,there were statistical differences（both P0.05）.The average change values of vertex and the maximum height of corneal posterior surface were（3.21±1.62）μm and（2.30±1.11）μm higher than those of normal cornea,but no obvious difference was found（P0.05）.The location of the maximum height of corneal posterior surface was not same with location of the thinnest corneal thickness.Conclusion We should pay more attention to changes of refractive power of corneal posterior surface and corneal posterior elevation with refractive regression after wavefront-guided LASIK for high myopia to prevent and timely found postoperative keratoconus.

关 键 词：高度近视 波前像差 角膜后表面 角膜磨镶术 

分 类 号：R779.6[医药卫生—眼科] R778.11[医药卫生—临床医学]