It can cause eyestrain, headaches, blurred vision, double vision, dryness, and neck, back and shoulder pain.

它会引起眼睛疲劳、头痛、视力模糊、复视、干涩以及颈部、背部和肩部疼痛。

One study found that just 4 hours of screen use was significantly associated with eyestrain and sore eyes.

一项研究发现，仅仅4小时的屏幕使用就与眼睛疲劳和疼痛有显著的联系。

That is also why so many people with perfectly sound vision suffer from " eyestrain" .

这也是为什么那么多拥有完美视力的人遭受“眼睛疲劳” 的原因。

Eyestrain also results from reading a lot, reading in bed, and watching too much television.

过度阅读、躺在床上看书、看电视太久也会导致眼疲劳。

However, although eyestrain may cause some pain or headaches, it does not permanently damage eyesight.

然而，尽管眼疲劳可能会引起疼痛或头痛，但不会永久性地损害视力。