Liu Xiao-Wei, Wang Zheng, Yu Wei-Hong, Wang Zao-Wen, Zhang Yan-Ning, Liu Jian-Jun, Sui Rui-Fang
Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China.
Int J Ophthalmol. 2011;4(5):508-12. doi: 10.3980/j.issn.2222-3959.2011.05.10. Epub 2011 Oct 18.
To investigate the frequency of idiopathic phacodonesis (IP) in senile cataract subjects and the short-term clinical outcomes following cataract surgery.
This institutional case-control study included 1301 consecutive low-income cataract subjects from June to November 2009. Anterior segment were carefully evaluated with dilated pupil under slit-lamp. IP were screened and graded by a criteria set by the authors. Risk factors, surgical outcomes, and operative complications were analyzed.
A total of 42 subjects (3.2%) with IP were diagnosed and classified as grade 1 (36 subjects), grade 2 (5 subjects) and grade 3 (1 subject). Harder lenses and intumescent cataracts were observed in the IP group than the control group (P<0.05). Logistics regression test also indicated the main risk factor was the hardness of the lens. The incidence of zonular dialysis during surgery was 23.8% (10 eyes), which was significantly higher than the controls (0.7%, P<0.001). Visual outcomes of the two groups were not statistically or clinically significant.
Hard nucleus and intumescent cataract are related to IP in senile cataract subjects in Qinghai, China. With more care being taken, grade 1 and some of the grade 2 IP subjects achieved similar surgical outcomes as compared to controls.
探讨老年性白内障患者特发性晶状体震颤（IP）的发生率以及白内障手术后的短期临床结局。
本机构性病例对照研究纳入了2009年6月至11月连续就诊的1301例低收入白内障患者。在散瞳状态下于裂隙灯下仔细评估眼前节。按照作者制定的标准对IP进行筛查和分级。分析危险因素、手术结局及手术并发症。
共诊断出42例（3.2%）IP患者，分为1级（36例）、2级（5例）和3级（1例）。与对照组相比，IP组中硬晶状体和膨胀期白内障更为常见（P<0.05）。逻辑回归检验还表明主要危险因素是晶状体硬度。手术中悬韧带断裂的发生率为23.8%（10只眼），显著高于对照组（0.7%，P<0.001）。两组的视觉结局在统计学和临床上均无显著差异。
在中国青海，硬核和膨胀期白内障与老年性白内障患者的IP有关。更加小心操作的情况下，1级和部分2级IP患者与对照组相比可获得相似手术结局。
