美国增加很快,请看著名的Mayo Clinic 的调查结果:
The prevalence of myopia in adults has also been reported for the period between 1966 and 2019 in Olmsted County, which encompasses the Mayo Clinic in Rochester, Minnesota (Tailor et al., 2024). For adults there older than age 18, 57.1% had myopia in the 2010s. This represents a 68% increase from the 33.9% prevalence recorded in the 1960s.
这两年增长最快的是印度,过去不到10%,现在已经超过50%。
人人拿着手机不停看,不近视才怪呢。
日本、新加坡、韩国近视率极高的第一原因是都市化更早。
电脑手机等电子产品引起近视增加是第二波浪潮。
第一波,特别是对东亚而言,是现代印刷术,字比原来小了很多(和原来的线装书比)。
另外就是东亚人最初学习英文等西方语言是按照图像记忆(学习方块字的方法)来背单词,特别费眼睛。