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1·Conclusion the incidence of asthenopia was high.

结论VDT操作者视疲劳发生率较高。

2·Asthenopia is a common ophthalmic disease caused by a variety of reasons.

视疲劳是目前眼科常见的一种疾病，是由各种原因引起的疲劳综合症。

3·We must pay attention to the diagnosis, treatment and prevention of post-PRK muscular asthenopia.

应重视PR K后肌性视疲劳的诊断、治疗和预防。

4·We should pay more attention to the diagnosis, treatment and prevention of muscular asthenopia after PRK.

应重视PR K后肌性视疲劳的诊断、治疗和预防。

5·Conclusion the flickering light source may lead to the change of visual accommodation and cause the asthenopia.

结论荧光灯频闪可以使眼的调节机能发生变化，引起视觉疲劳。

6·CONCLUSION: Disorder of ciliaris double innervation in the state of near sight is an important reason for asthenopia occurrence.

结论：持续近视状态下睫状肌双重神经支配的异常为肝劳发病的重要原因之一。

7·Conclusion: Disorder of the balance of double-nerve controlled ciliary muscle may be an important reason of asthenopia occurrence.

结论：持续视近状态下睫状肌双重神经支配的异常为肝劳发病的重要原因之一。

8·Objective to approach the objective clinical diagnosis standards for asthenopia and to study the curative effect of Chondroitin Sulfate Eye Drops.

目的探讨临床诊断视疲劳的客观依据及润尔乐治疗后的效果。

9·Results: to handle VDT for a long time can bring obvious asthenopia, some changes may appear on cornea and lens, the cause is due to several factors.

结果：长时间操作VDT会出现明显的视疲劳，角膜和晶状体也可能出现某些改变。其原因为多因素所致。

10·AIM: To evaluate the therapeutic effects of using prism effect in the correction of muscular asthenopia by changing optical center of presbyopic glasses.

目的：应用改变近用老视镜的光学中心所产生的三棱镜效应，消除老视患者近距离阅读和工作的肌性视疲劳。