Recently, researchers found that vitamin D status was strongly related to time spent outdoors, but was not related to risk of myopia in children.
Myopia is a condition characterized by the eyes inability to focus correctly on exposure to light. It is often referred to as nearsightedness, as people with myopia can see objects close to them but not far away.
Reports show that nearly 70 million Americans have myopia and it is estimated to be one of the top three causes of registered blindness around the world.
In exploring the pathology of myopia, researchers have determined that two major risk factors for myopia are time spent outdoors and time spent reading.