Conclusion the incidence of asthenopia was high.

结论VDT操作者视疲劳发生率较高。

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。

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。

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。

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。