提上睑肌缩短术不论采取外路法还是内路法,或内外路结合的手术途径,均需充分分离结膜直至穹窿部顶端,才能使提上睑肌游离。但分离结膜时,若分离过头,将球结膜也分离,会发生结膜脱垂。为了预防这种意外发生,我们在手术结束时,一手持手术刀柄,手术刀柄尾部由内眦插入穹窿部,顶 Levator muscle shortening surgery regardless of the way to take outside or within the law, or the combination of internal and external surgical approach, are required to fully separate the conjunctiva until the top of the fornix in order to make mention levator muscle free. However, the separation of conjunctiva, if the separation is too far, the conjunctiva also separated, conjunctival prolapse occurs. In order to prevent this accident, we at the end of surgery, holding a surgical knife handle, surgical knife handle the tail inserted into the fornix from the Ministry, the top