The key is shifting focus from super close to a couple of hundred yards (meters) and back a number of times more days than not. My wife and I are part of a mult

The key is shifting focus from super close to a couple of hundred yards (meters) and back a number of times more days than not. My wife and I are part of a multigenerational cohort who all wear glasses. I read a paper in ~2013-14 about how kids in Australia to Singaporian parents get less nearsightedness than a matched gourp back in Singapore. I thought it was light exposure and mentioned it to another school parent in NYC. He heard it was switching focus from near to far. So I started to guide my kid to look at cornices (roof edge decorations) or way down the street as we are walking, then to shift focus back to real close in some repition. And he got in the habit of doing it enough, and he is still glasses free at almost age 17 and the Eye Dr predicts he is clear until middle age now. So parents if you have kids teach them this skill and guide them until they get the habit !!