I think most artificial screens can cause problems for children’s eyes. And wearing computer glasses can decrease your child's risk of eye and vision problems from prolonged use of computers.
For immature eyes, computer glasses are a good choice. However, children’s eyes are in development period, any kinds of glasses may bring negative effects on them, so as parents, you should take care that long-time wearing is not beneficial to them.
Computer glasses for kids are essential for protecting your child's health and eyesight, because blue light for long time can increase the risk of eye disease. But wearing computer glasses are not once for all, the most important is paying attention to daily eye hygiene and eye care.