Conclusion the total astigmatismaxis and the binocular astigmatismaxis of cornea have the characteristic of homogeneity, also the trend of symmetry.
结论双眼的全眼和角膜散光在轴向方面都具有同质性，并且具有对称或近似对称趋势。
2
Objective To investigate distribution rules in preschool children, the main type, degree and axis of astigmatism.
目的探讨学龄前儿童散光的类型、程度及轴向分布情况。
3
Since off-axis wander results in images which have astigmatism when the prism is placed in a converging beam, Glan types have slightly better imaging qualities than Nicla types.