角膜地形图引导下不同手术切口对超声乳化术后角膜表面形态和泪膜的影响

目的:分析在角膜地形图引导下不同角膜切口对白内障超声乳化术后角膜表面形态和泪膜的影响。方法:回顾性研究。选取2019-06/2020-12在我院行白内障超声乳化术患者56例60眼为研究对象,分为透明角膜切口组和角巩膜缘切口组,对存在角膜散光的患者,做与散光同轴向切口。比较术前及术后1wk,1、3mo最佳矫正视力(BCVA)、OSDI问卷、泪膜破裂时间(TBUT)、角膜表面规则指数(SRI)、角膜表面非对称指数(SAI)和角膜表面散光值(CYL)。结果:两组术后BCVA较术前均提高(P<0.01);术后1wk,3mo两组患者OSDI评分较术前有差异(P<0.01);术后1mo两组TBUT较术前均有不同程度缩短(P<0.05);两组术后SAI和SRI均呈现不同程度上升,术后1wk,1mo角巩膜缘切口组SAI值明显低于透明角膜切口组(P<0.05);术后1wk两组CYL增长较术前均显著(P<0.05),随着时间的推移逐渐下降,术后3mo时透明角膜切口组较术前仍有所增高。结论:角巩膜缘切口对术后角膜表面形态及泪膜的影响更小,能有效降低患者术后眼部不适症状。

Relationship between acute stress and sleep disorder in grass-root military personnel:Mediating effect of social support

Background: To explore the relationship between acute stress, social support and sleep disorder in grass-root military personnel, and construct the relational model through structural equation modeling. Methods: A total of 2,411 grass-root military personnel were randomly selected by cluster sampling, and administered the Chinese Military Personnel Sleep Disorder Scale, Military Acute Stress Scale and Social Support Rating Scale.Results: The total score of acute stress scale was positively correlated with the total score and factor scores of sleep disorder scale(r=0.209~0.465, P【0.01); The total score of social support scale was positively correlated with the total score of acute stress scale and the total score and factor scores of sleep disorder scale(r=0.356~0.537, P【0.01). The analysis of mediating effects showed that lack of social support partially mediated between acute stress and the factors of sleep disorder. The analysis of structural equation model showed that acute stress not only had a direct effect on sleep disorder(the path coefficient was 0.29, P=0.000), but also on lack of social support(the path coefficient was 0.39, P=0.000); lack of social support had a direct effect on sleep disorder(the path coefficient was 0.48, P=0.000).Conclusions: Acute stress and lack of social support are two significant factors of sleep disorder in grass-root military personnel. Well-established social support could alleviate sleep disorder induced by acute stress. Lack of social support was a partial mediator between acute stress and sleep disorder.

Scene-trait coping style of military rescuers in Wenchuan earthquake

Objective This study aimed to explore the scene-trait coping style of military rescuers in Wenchuan earthquake in an effort to provide scientific evidences for mental intervention program for Chinese military personnel.Methods By cluster sampling,a total of 151 military rescuers and 331 control servicemen were administered the military personnel scene-trait coping style scale(MPSTCSS).Results All active coping factor scores,and passive coping factor scores of affection,health and economy in the rescuer group were significantly higher than those in control group(P<0.05).The 21-above age subgroup,the3-year plus service subgroup,and the officer subgroup had significantly higher active coping factor scores on military tasks,military experience and personal development than those of the 21-below age subgroup,3-year minus service subgroup and the soldier subgroup,respectively(P<0.05 or P<0.01).Conclusion The earthquake relief servicemen can cope with stressful situations better than control group by taking active coping style.The officers,servicemen older than 21 years,and servicemen with more service duration than3 years could usually take active coping style.