Is it because of eyestrain?

是因为用眼疲劳吗？

This helps prevent eye fatigue and eyestrain.

这样可以帮助你防止眼睛疲劳和紧张。

Within about a week my eyestrain problems were gone.

不到一周的时间，我眼睛疲劳的问题不见了。

Watching too much television results in eyestrain.

看电视时间过长会导致视觉疲劳。

Studying for a long time can also cause eyestrain.

长时间的学习也很容易引起眼睛疲劳。