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目的评价通过闭合式切口的玻璃体切割和眼后段超声粉碎治疗溶解性晶体全脱位的疗效。方法对１例２眼的马凡氏综合征（Ｍａｒｆａｎ＇ｓｓｙｎｄｒｏｍｅ）溶解性晶体全脱位继发青光眼先后行闭合式玻璃体切割，并采用后段超声粉碎技术辅以导光纤维为第二器械帮助，直至把核粉碎完毕。结果２只全脱位晶体顺利超声粉碎吸除，辅以药物控制术后１月１．８８ｋＰａ（２５ｍｍＨｇ）和１．５３ｋＰａ（２１ｍｍＨｇ）；术后３月不用药物眼压分别为１．５１ｋＰａ（２０．３ｍｍＨｇ）和１．５２ｋＰａ（２０．７ｍｍＨｇ）；矫正视力为右眼：０．４，左眼：０．５。结论对于单纯性晶体全脱位、溶解性晶体全脱位和超声乳化时核脱入玻璃体腔者可采用此项闭合切口下玻璃体切割联合晶体后段超声粉碎技术
Objective To evaluate the efficacy of vitrectomy and posterior segment ultrasound in the treatment of total dislocation of dissolved crystals through a closed incision. Methods One case of 2 eyes of Marfan’s syndrome with dislocation of secondary crystalline glaucoma was followed by closed vitrectomy and the latter section of ultrasonic crushing technique supplemented by light guide fiber was used as the second instrument to help. Until the nuclear crushed finished. Results Two total dislocation crystals were successfully sonicated by aspiration and controlled by drugs at 1.88 kPa (25 mmHg) and 1.53 kPa (21 mmHg) at 1 month postoperatively. The intraocular pressure (IOP) at 3 months postoperatively was 1.51 kPa (20. 3mmHg) and 1.52kPa (20.7mmHg); corrected visual acuity for the right eye: 0.4, left eye: 0.5. Conclusion For the simple dislocation of the crystal, total dislocation of dissolved crystals and phacoemulsification nucleus into the vitreous cavity can be used under this closed incision combined with vitrectomy after the crystal ultrasonic technology