The basic principle of medicine is that if you do not use muscles, they become weaker. Just like any other muscle, it is also necessary to train the muscles of the eyes.
If you want to preserve their health and get maximum benefit, follow these tips!

Avoid eye overload during the day

Close your eyes every 2 to 3 hours and relax for a few minutes.

If you wear glasses, reduce the wearing time

More often remove them and not wear them when this is not really necessary.

 Focus your look at the horizon

When you are outdoors, try to look more distant instead of focusing on your feet or the surrounding environment.

Drink carrot juice

Every day, take some carrot juice. If you want to achieve the maximum benefit of juice, add one or two drops of olive oil. It will not ruin the taste and the body will easily absorb nutrients.
Rinse your eyes with warm water
If you feel tense and tired of your eyes, rinse them with warm water.

Avoid looking at the screen before going to sleep
Do not look at the screen of a cell phone, TV or computer screen, at least two hours before going to bed.

Try the Indian exercise for the eyes.

Sit down so you are looking at a particular object in the room (eg. Place the candle on the table in front of it). Focus on the subject and direct all attention to it. Try not to blink. The goal is to achieve a firm and detailed picture of objects in your mind and memory. Then close your eyes and pay attention to the space between the eyebrows, trying to keep the subject image in your head as much as you can. Exercise for about 10 minutes.

The goal of the exercise is to achieve a clear picture before your eyes become tired.
With these tips and exercises, you’ll keep eye health and avoid the pressure caused by a long-term viewing of various devices on the screen.

Source: http://www.centarzdravlja.hr/zanimljivosti/odmorite-oci-uz-pomoc-ovih-trikova/?refresh=true