1st world countries have myopia. 3rd world countries do not. People in 3rd world countries that are emerging into 1st world countries will develop myopia. Less exposure to the full brightness of the sun in the infinite activity of the outdoors and increased time spent indoors with indoor lighting and stagnant vision environment leads to myopia. The eyes are the most intimately connected organ to the brain - perhaps you should rethink your vision lifestyle. Is it good for you to be stare at a webpage with increasingly larger fonts on a smartphone 12in/30cm away from your eyes? Probably not. Eyes are supposed to constantly be moving (saccade) and should not be dry. Great eye health is a great life. Sincerely, someone who has proactively one from -2.25 in to -1.75 in both eyes in 9 months time.