Some studies have shown that increased exposure to UVB rays in sunlight is associated with a reduced risk of eye disease. So could spending time outdoors reduce myopia, a very common refractive error today?

Medical experts estimate that nearly half of the U.S. population (about 42%) is nearsighted. This number has nearly doubled in the past three decades and shows no signs of stopping. Myopia is not only inconvenient, but in the long run, it can make the condition worse.