HÀ NỘI — Recent medical studies have shown that the rate of myopia in Vietnamese children is increasing, especially in cities. Currently, all children under six nationwide are granted free health insurance cards, and nearly 100 per cent of Vietnamese children are fully vaccinated, according to the deputy minister. In HCM City, 75.6 per cent of surveyed children had refractive errors and 52.7 per cent of those had myopia. Myopia and eye diseases can limit children's ability to learn. In the current digital age, children are inevitably exposed to smart electronic devices such as computers and mobile phones, so parents need to remind children to regulate their usage so that they do not spend too much time using the devices.