目的:探讨白内障超声乳化手术中晶状体核完全脱入玻璃体腔的原因与合理的处理方法。方法:回顾性分析5a内7 526例白内障超声乳化手术术中晶状体核下沉患者的临床资料。结果:发生严重晶状体核下沉患者7例,其中2例是玻璃体切除术后患者,成熟或过熟期白内障患者5例。晶状体核下沉后3例患者立即行后段玻璃体切除并顺利植入人工晶状体,1例未取出核块植入PMMA晶状体,1例2wk后发生视网膜脱离,2例因条件所限放弃进一步处理。结论:玻璃体状态(高度液化)是白内障超声乳化手术中晶状体核严重下沉的最为重要的原因,及时行后段玻璃体切除手术是正确的选择。

AIM:To discover the cause of dislocation of nucleus into vitreous vacuum in phacoemulsification and proper management for these conditions. METHODS:Totally 7526 cases with dislocation of nucleus in phacoemulsification were reviewed in 5 years. RESULTS:Seven patients had severe dislocation of nucleus.2 cases suffered pars plana vitreoctomy(PPV) and 5 cases had mature or over mature cataract.When dislocation happened,3 patients was immediately performed PPV combined with intraocular lens(IOL) implantation,1 patient was implanted PMMA IOL without taking out of nucleus,1 patient suffered retinal detachment after 2 weeks,and 2 patients could not be further proceed for poor condition. CONCLUSION:The vitreous state(high fluidity) is the most common cause for dislocation of nucleus in phacoemulsification.PPV is a proper method for these patients.

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