摘要
目的 探讨近视患者准分子激光原位角膜磨镶术 (laserinsitukeratomileusis,LASIK)后调节性集合 (accommodativeconvergence ,AC)与调节 (accommodation ,A)比值的变化及其影响因素。方法使用同视机测定 135例不同程度近视患者LASIK术前裸眼、术前配戴框架眼镜 (戴镜 )及术后裸眼的AC/A值 ,并进行统计学比较和分析。结果 全部患者术前裸眼、术前戴镜及术后裸眼的AC/A值分别为 ( 0 72 4± 0 5 87) △/D、( 2 75 4± 1 5 6 5 ) △/D及 ( 1 6 18± 1 0 2 7) △/D ,两两比较差异均有非常显著意义 (P <0 0 0 1)。不同程度近视患者术前裸眼AC/A值比较差异有显著意义 (P <0 0 1) ,术前戴镜和术后裸眼AC/A值比较差异均无显著意义 (P >0 0 5 )。LASIK术后裸眼AC/A值与术前戴镜AC/A值和屈光度数呈正相关 (P <0 0 0 5 ) ,与患者年龄和眼轴长度呈负相关 (P <0 0 0 2 )。术后裸眼AC/A值 (Y)与患者年龄 (X1)、眼轴长度 (X2 )及术前戴镜AC/A值 (X3)建立多元回归方程为Y =4 0 80 0 - 0 0 318X1- 0 0 971X2 +0 32 5 0X3(P <0 0 0 1)。结论 近视患者AC/A值LASIK术后裸眼高于术前裸眼 ,低于术前戴镜 ;LASIK术后AC/A值受术前戴镜AC/A值、患者年龄及眼轴长度的影响。
Objective To study the changes of AC/A ratio of myopia after excimer laser in situ keratomileusis (LASIK). Methods 135 myopia patients were treated by LASIK, their AC/A ratios were measured with synoptohore before surgery and 3 months after surgery. Results The average AC/A ratios of naked eyes or eyes wearing glasses before surgery and the naked after surgery were(0.724±0.587) △/D?(2.754 ±1.565) △/D?(1.618±1.027) △/D in turn. There were significant difference among those groups (P <0.001). That also appeared in different degree of myopia naked before surgery (P<0.01). We found no significant difference between the groups wearing glasses before surgery and naked after surgery (P>0.05). A positive correlation was built up between postoperative AC/A ratio and AC/A ratio of wearing glasses or refractive diopter before surgery (r=0.550, P<0.001; r=0.185, P<0.005). And the postoperative AC/A ratios had a negative correlation to age or length of ocular axis (r=-0.340, P<0.001; r=-0.192, P<0.002). The regression equation for postoperative AC/A ratios was figured out as Y( △/D)= 4.080 0-0.031 8X 1 -0.097 1X 2+0.325 0X 3 (P <0.001). X 1=age(year), X 2=length of ocular axis (mm), X 3=preoperative AC/A ratio with weaning glasses ( △/D). Conclusion The naked AC/A ratios are higher than the preoperative′s after LASIK, but lower than the wearing glasses′s before surgery. It is influenced by the factors, such as: the preoperative AC/A ratio of wearing glasses, the length of ocular axis and the age.
出处
《中华眼科杂志》
CAS
CSCD
北大核心
2003年第3期132-135,共4页
Chinese Journal of Ophthalmology
