圆锥角膜 (keratoconus)是以角膜变薄前突产生不规则散光为特征的原发性角膜变性疾病 ,常伴有不同程度的视力损伤 (图 1)。其常独立存在 ,也可并发于许多其他疾病。本病无炎性反应 ,不伴细胞浸润和新生血管形成 ,多在青少年期发病 ,常双侧性 ,可先后发生 ,女性多见 ,具有一定家 Keratoconus is a primary corneal degeneration disease characterized by irregular astigmatism caused by thinning of the cornea, often accompanied by varying degrees of visual impairment (Figure 1). It often exists independently and can also be complicated by many other diseases. No inflammatory reaction of this disease, not with cell infiltration and neovascularization, mostly in adolescent onset, often bilateral, can occur, more common in women, with a certain family