So yup. I've seen this. Though there were many rebuttals, it's interesting. I would like to add that looking a UV light isn't good. It hurts your eyes light snow blindness does. I would assume that this small protection against myopia came from a higher melanopic response (possibly also S-cone, though unsure). There was another paper that found that myopic people had more Long cones vs short cones. There was another that found that myopic people had higher melatonin all day round pointing to a weaker circadian rhythm. I would like to point out that the solution isn't to bring in philips go lites everywhere, as saturating the melanopic response, without attending to the other cones (in my experience) results in a stupor where nothing is done. Ditto for red lights. Not sure where the sweet spot is, but I would assume that a white light, that is triggers melanopic response, but only slightly more than the others would be the optimal light. This is all theory however.