Nearsightedness, or myopia, as it is medically termed, is a vision condition in which close objects are seen clearly, but objects farther away appear blurred. Nearsightedness is a very common vision condition affecting nearly 30 percent of the U.S. population. In Mexico, the prevalence of myopia is lower here, it affects about 30 per cent of the population, according to the Canadian Association of Optometrists and provincial optometry associations.
In order to develop a protocol for measuring vitamin D levels, Mutti is conducting a study in which participants are wearing monitors that detect exposure to UV and visible light. Levels of vitamin D are also being measured via blood and saliva samples.