方法：选取64例70眼翼状胬肉患者纳入研究，测量裸眼视力、角膜曲率及胬肉侵入角膜缘长度，分析胬肉长度与角膜散光的相关度，对比翼状胬肉切除+角膜缘干细胞移植术手术前后裸眼视力。

结果：术前69眼有不同程度的角膜散光，与胬肉侵入角膜长度相关，以循规性散光为主。术后1mo，其角膜散光明显下降，裸眼视力提高。

结论：翼状胬肉可引起角膜循规性散光，散光程度与胬肉侵入角膜长度关系密切，手术可以使角膜散光改善、视力提高。

METHODS: Totally 64 patients 70 eyes with primary pterygium were included in present study. Uncorrected visual acuity, corneal curvature and the length pterygium invading the cornea was measured. The association between length pterygium invading the cornea and the corneal astigmatism was analyzed. The difference between pre- and post-operative corneal astigmatism were analyzed, as well as uncorrected visual acuity.

RESULTS: Before operation, various levels of astigmatism were found in 69 eyes. The degree of astigmatism was associated with the length pterygium invading the cornea, and regular astigmatism was the main type. The degree of astigmatism reduced 1 month post-operatively and uncorrected vision acuity improved.

CONCLUSION:Pterygium would cause regular astigmatism, and the degree of astigmatism was significantly associated with the length pterygium invading the cornea. The operation of pterygium could obviously improve corneal astigmatism and visual acuity.