Researchers said, about a third of Americans suffers from myopia or near sightedness - a condition seen to be caused by both genetics and the environment. Children who spent less time outdoors and more time watching tv are those vulnerable. Outdoor exposure is beneficial because sunlight causes the pupil to constrict, resulting in a larger depth of focus - the range in which objects appear clear, and less image blur that is associated with myopia development.
BE aware, the eye may see more clearly outside in the sunlight and avoid developing myopia. Looking at things
farther away maybe another benefit of outdoor activities.
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