Dr. chan has diagnosed 8-year-old hsu with myopia (nearsightedness). he recommends that hsu should spend more time playing outside in the sun. why would dr. chan make this recommendation?

The reason that Dr. Chan makes the recommendation of Hsu to spend more time playing outside the sun because Dr. Chan recognizes that the environment has a strong impact in regards of visual genes in which will allow Hsu to improve his visual sighting.