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目的:观察白内障手术植入硅凝胶襻板式人工晶状体的稳定性,分析其偏心和后脱位的相关原因。方法-结果:我们报道了3例顺利行白内障超声乳化并硅凝胶襻板式人工晶状体植入手术的患者,在术后发生人工晶状体后脱位。1例出现在因高度前囊收缩行扇形晶状体前囊切开术后4a,另2例分别出现在晶状体后囊切开术后早期和术后3mo。3者均在顺利行晶状体后囊切开术后发生脱离。患者均无外伤病史或其他促发事件。结论:硅凝胶襻板式人工晶状体似乎由于较差的囊粘附性易于脱位,因为它们仅是通过襻的纤维变性融合而固定。如果前囊或后囊破裂,囊收缩产生的力量可以导致放射状撕裂的扩展,进而引起植入晶状体的后脱位。尽管其他类型人工晶状体在这方面优于硅凝胶襻板式人工晶状体,但是已植入此种人工晶状体,在进行YAG激光晶状体囊切开术时,告知他们潜在人工晶状体后脱位风险是术后早期或晚期并发症是非常重要的。
Objective: To observe the stability of intraocular lens implantation in cataract surgery and analyze the causes of eccentricity and posterior dislocation. METHODS - RESULTS: We reported 3 patients who underwent phacoemulsification and silicone gel plate IOL implantation, and posterior chamber dislocation after surgery. One case occurred in the anterior anterior capsulotomy due to anterior anterior capsulorhexis anterior sagittal incision 4a, and the other two cases occurred in the early postoperative period of posterior capsulotomy and 3 months postoperatively, respectively. 3 were detachment occurred after successful posterior capsulotomy. None of the patients had a history of trauma or other exacerbations. CONCLUSIONS: Silicone-plate lenses appear to be prone to dislocation due to poor capsule adhesion as they are only fixed by fusion of fibula. If the anterior capsule or posterior capsule ruptures, the force resulting from the contraction of the capsule can result in an extension of radial tearing which in turn can cause posterior dislocation of the implanted lens. Although other types of IOLs outperform silicone gel IOLs in this respect, IOL implants have been implanted to inform them of the potential risk of posterior capsular posterior dislocation during early YAG laser capsulotomy Or late complications is very important.