先天性上睑下垂与眼散光量的关系及其对眼轴长的影响

目的通过对眼散光、眼轴长与上睑下垂严重程度关系的分析,评价其对弱视形成的影响。方法收集我院2013年1月²013年12月先天性上睑下垂患者29例58眼,根据上睑下垂严重程度分为四组:Ⅰ组(正常),Ⅱ组(轻度),Ⅲ组(中度),Ⅳ组(重度),比较分析各组眼散光量、眼轴长及其相关性。结果各组之间总散光、角膜散光差异有统计学意义(P<0.05);各组之间球内散光、高屈光力方向、眼轴长度差异无统计学意义(P>0.05);各组之间弱视发生率总体差异有统计学意义(P<0.05);先天性上睑下垂程度和总散光、角膜散光呈正相关(r=0.514、0.721,P<0.001),先天性上睑下垂程度和球内散光、眼轴长度无相关性(P>0.05)。结论先天性上睑下垂对眼散光的影响主要是由角膜散光引起,其散光的严重程度和上睑下垂严重程度相关,但是对眼轴长不产生明显影响。

Relation of congenital ptosis and astigmatism mount and its effect on eye axial length

Objective To study the relationship of eye astigmatism and eye axial length and sevemty ot ptosis, and to evaluate its impact on the formation of amblyopia. Methods Twenty--nine patients （58 eyes） in our hospital from January 2013 to December 2013 were selected. According to the severity of ptosis, the pa- tients were assigned to group Ⅰ（normal）, group Ⅱ （mild）, group Ⅲ（moderate）, groupⅣ （severe）, compared and analyzed the amount of astigmatism, eye axial length and their relevance among groups. Results The comparison of total astigmatism and corneal astigmatism between groups showed that there were statistically significant differences （ P 〈0.05）. The comparison of ball astigmatism, the direction of the high refractive power, and eye axial length between groups showed that there were not statistical significant differences （ P〉 0.05）. The comparison of overall incidence of amblyopia between groups showed that there was not statistical significant difference （ P 〈0.05）. The severity of congenital ptosis had positive association with total astigmatism and corneal astigmatism （ r =0.514,0. 721, P 〈0. 001）, and the severity of congenital ptosis had no association with ball astigmatism and eye axial length （ P 〉0.05）. Conclusion The effect of congenital ptosis on eye astigmatism is mainly caused by corneal astigmatism. The severity of astigmatism is related with the severity of ptosis, but has no impact on axial length.