摘要
Children can spend hours a day looking at computer screens,smart phones or other screens.Some eye care experts say this leads to an increase in"computer vision syndrome(计算机视觉综合征)".Nathan Bonilla-Warford is an eye-doctor in Tampa,Florida.He says he has seen an increase in eye problems in children.And he finds a lot more children who are coming into the office because their parents have noticed that they have headaches.
