How to use eyes correctly?

Some suggestions for your reference,

1,

If you watch TV,

Suggestion: continue watching TV.

A distance of more than two meters.

2,

If you play with your mobile phone,

Suggest,

The distance between eyes and mobile phone.

One arm long,

3,

Have a good rest,

For example, looking out of the window,

Look at these green plants,

Potted plants,

4. Every once in a while,

For example, 50 minutes,

Rest, do eye exercises,

Attention, wash your hands in advance.

Don't use the hands that have played with mobile phones.

Go directly to do eye exercises.