翼状胬肉因胶原变性及纤维血管增生而产生。
Pterygia are caused by collagen degeneration and fibrovascular proliferation.
结果：术后随访12～24个月，所有患者未出现球结膜明显的纤维血管增生及角膜浸润，无1例复发。
Results: During a follow-up of 12 to 24 months, no recurrence and no sub-epithelial fibro-vascular proliferation were found and all achieved a radical cure.
结果实验组新骨生长及成熟骨替代过程较对照组快，且有增生的小血管及神经纤维。
Results In experimental group, the process of new bone growth and mature bone replacement was faster than that of control group, new blood vessel and nervous fiber remarkably proliferated.
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