We are now in our existence. The oxygen we breathe comes from the greenery. They scavenge the carbon dioxide we breathe out and convert them in to oxygen and release to the air. They do the photosynthesis and produce vegetables, fruits, seeds cereals etc.
It is because greenery is usually at a distance. A grass patch, a group of trees is usually at least a few metres away from us. This means the eye is focusing at an object far away when we look at greenery.
This is why we always hear about good eye care habits that include reducing time spent reading, writing and using computers/hand-held devices; and to look far away after every half hour of reading/writing.
Yes, greenery is positively good for the eyes. It not only improves eye sight but alters you thinking too. It's the altered consciousness which has beneficial impact on your eye sight.
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