益视口服液治疗中老年视力疲劳65例疗效观察

[目的]观察益视口服液治疗中老年视力疲劳的效果。[方法]将125例中老年视力疲劳患者随机分为两组,观察组65例采用口服益视口服液治疗,对照组60例采用口服明目地黄丸治疗,同时两组均减少用眼时间并进行自我眼周穴位按摩。[结果]经过2～4周的治疗,观察组65例中痊愈23例,显效25例,有效13例,无效4例,总有效率为93.85%;对照组60例中痊愈14例,显效19例,有效16例,无效11例,总有效率为81.67%。总有效率组间比较,观察组优于对照组（P＜0.05）。[结论]益视口服液治疗中老年视力疲劳有较好的临床效果,可以明显改善其视力模糊、畏光、流泪及眼干涩等症状,有助于恢复其视力。     

不同颜色纸张对视功能的影响

目的 :探讨作业面的颜色与视疲劳的关系 ,寻找减轻视疲劳的方法。方法 :测量 10 0名被试者使用黄色或绿色纸张读写 6 0min前后的 92 %、4 1%、2 2 %对比视力和大视角、中视角的对比敏感度。结果 :使用黄色或绿色纸张读写 6 0min后 ,被试者的 92 %、4 1%、2 2 %的对比视力都有所下降 ,但使用绿色纸张时 ,对比视力下降较低 ,与使用黄色纸张比 ,92 %、4 2 %的对比视力有非常显著性差异 (P <0 .0 1) ;使用绿色纸张时 ,大视角、中视角对比敏感度降低的眼数比使用黄色纸张时降低的眼数少 ,两者相比有非常显著性差异 (P <0 .0 1)。结论 :读写时在影响视功能方面 ,绿色纸张低于黄色纸张     

自拟温通散眼部热熨对视疲劳患者症状及调节力的影响

目的观察活血化瘀中药温通散眼部热熨对视疲劳患者症状及调节力的影响。方法将66例视疲劳患者随机分为2组,治疗组予温通散局部热熨治疗,对照组予单纯局部热熨治疗,每日1次,治疗2周。观察治疗前后症状积分及调节灵敏度、调节滞后量、调节幅度的变化。并进行安全性评价。结果（1）症状积分：两组均能改善视疲劳患者的自觉症状,两组比较差异有统计学意义（P〈0．05）。（2）调节灵敏度：两组组内及组间比较差异均有统计学意义（P〈0．05）。（3）调节滞后量：两组右眼治疗后差异有统计学意义（P〈0．05）,左眼差异及两组间比较差异均无统计学意义（P〉0．05）。（4）调节幅度：两组组内比较差异有统计学意义（P〈0．05）;两组间比较差异无统计学意义（P〉0．05）。所有患者均未出现不良反应。结论眼部热熨缓解视疲劳安全有效。且温通散热熨改善症状更明显。对于调节的影响优于单纯热熨。     

七叶洋地黄双苷滴眼液治疗青少年屈光不正性视疲劳

目的:评价七叶洋地黄滴眼液治疗青少年屈光不正性视疲劳的效果。方法:研究对象为2011-04/2012-04在本院门诊就诊的屈光不正且具有典型的视疲劳症状患者200例400眼,年龄6～18岁,入选者采用(德国施图伦大药厂)七叶洋地黄双苷滴眼液3次/d,每次1滴,共使用1mo。通过进行调查问卷评分测定视疲劳主觉症状改善情况,以及视力和屈光度的改变和药物的不良反应。结果:用药前后患者的视疲劳主觉症状评分:治疗前3.67,治疗结束后1.89,治疗前和治疗后差异有统计学意义(P<0.05)。患者的裸眼视力有所提高,治疗前200例400眼平均视力为4.43±0.38,治疗后为4.60±0.49,组间比较差异有统计学意义(t=-3.87,P<0.05)。治疗前后屈光度由-2.54±3.00D降至-2.25±2.98D,但差异没有统计学意义(t=-0.96,P=0.33)。没有发现明显的不良反应。结论:七叶洋地黄滴眼液对青少年屈光不正性视疲劳安全、有效。     

Prevalence of asthenopia and its risk factors in Chinese college students

AIM:To determine the prevalence of asthenopia and identify any associated risk factors in the college students in Xi’an, China.METHODS:From April to September 2012, 1 500 students from five universities in Xi’an were selected according to a multi-stage stratified cluster sampling method. Data on demographic features, lifestyle or dietary habits, health status, living environment conditions, sleep and mental status, and asthenopia symptoms were collected through a self-administered validated questionnaire. Univariate logistic regression and multivariate logistic regression analysis modified by the factor analysis were performed to evaluate risk factors for asthenopia.RESULTS:Fifty-seven percent of the college students complained of asthenopia. Statistically significant risk factors for asthenopia in the univariate analysis included 13 variables. Multivariate analysis revealed a significant relationship between the use of computer and asthenopia (OR 1.21, 95%CI:1.09 to 1.35). Good sleep and mental status (OR 0.86, 95%CI:0.76 to 0.97), good living environment conditions (OR 0.67, 95%CI:0.60 to 0.76), and high intake of green leafy vegetables (OR 0.89, 95%CI:0.80 to 0.98) were found to be strong predictors of decreasing the occurrence of asthenopia complaints.CONCLUSION:Asthenopia symptom appears to be common among college students; and it is strongly associated with computer use, psychosocial state, environment conditions and dietary habits, suggesting that additional studies are warranted to verify these risk factors and establish prevention guidelines, especially for college students.     

近康汤治疗屈光不正性视疲劳的临床研究

目的 观察近康汤治疗屈光不正性视疲劳的临床疗效.方法 将200例屈光不正性视疲劳患者随机分为2组,观察组100例200眼,对照组100例200眼.对照组采用珍珠明目滴眼液滴眼、验光散瞳等治疗,观察组在对照组的基础上加服疏肝健脾、益气明目之近康汤治疗,两组均以15 d为1个疗程,治疗2个疗程后比较临床疗效.结果 观察组总有效率为93％;对照组为73％,观察组优于对照组(P＜0.01);两组治疗后视疲劳评分均较治疗前降低,差异有统计学意义(P＜0.05),且观察组改善优于对照组,差异有统计学意义(P＜0.05).结论 近康汤治疗屈光不正性视疲劳患者疗效显著,值得临床推广运用.     

Vertical prisms. Why avoid them?

Vertical prisms are useful in the permanent or temporary alleviation of asthenopic symptoms arising from a vertical misalignment of the visual axes. A wide variety of both comitant and noncomitant hyperdeviations may be candidates for vertical prism use. Vertical prism strength is seldom difficult to compute and when properly employed, vertical prisms do not lead to unsightly spectacles.