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成功的滤过性手术应包括一个从前房通过眼球壁到达结膜下间隙的瘘道。结膜下和结膜瘢痕形成或瘘道堵塞等原因可引起滤过泡进行性收缩常导致滤过的失败。而常规滤过手术结膜切口是必要的。本手术的瘘道从角膜作切口,从而不切开或损伤结膜。
Successful filtration surgery should include a fistula that passes from the anterior chamber through the wall of the eye to the subconjunctival space. Subconjunctival and conjunctival scar formation or fistula occlusion and other causes can cause progressive filtering bleb contraction often lead to filtration failure. Conventional filtration surgery conjunctival incision is necessary. The operation of the fistula incision from the cornea, so as not to cut or damage the conjunctiva.